KR20010009134A - An Apparatus for Treating Waste Water using Effective Microbe in Soil - Google Patents

Abstract

PURPOSE: A treatment equipment of waste water using microorganism is provided to maximize the decomposing efficiency of organic waste by installing treating tanks with various contact filter media such as sedimentation separating tank, contact oxidation tank, sludge settling tank and contact filtration tank, and to eliminate the requirement of additional physical and chemical filtration devices by treating the treated water and sludge finally by filtering or drying. CONSTITUTION: The system comprises the followings: (i) a sedimentation separating tank(2) in which crushed stone contacting media layer and earthworm soil layer are provided; (ii) a first contact oxidation tank(3) (aerobic) in which ceramic contacting media is fitted; (iii) a second contact oxidation tank(4) (aerobic) in which earthworm soil layer is provided; (iv) a sewage sludge settling tank(5) (anaerobic) in which eargthworm soil layer is provided; (v) No.3 contact oxidation tank(6) (aerobic) in which earthworm soil layer is provided; (vi) a contact filtration tank(7) (anaerobic) in which hardwood charcoal is provided; (vii) photosynthetic oxidation tank(8) (anaerobic); (viii) trench treatment device (11) of effluent type; (ix) a sewage sludge concentration tank(9) in which earthworm soil layer is provided; (x) a concentrated sludge reservoir(10); and (xi) a sewage sludge treatment equipment(13).

Description

Wastewater Treatment System Using Effective Soil Microbial Group {An Apparatus for Treating Waste Water using Effective Microbe in Soil}

The present invention relates to a soil-coated wastewater purification treatment apparatus, and more particularly, to install an anaerobic or aerobic treatment tank coated with earthworm soil on the upper part of the wastewater by treating domestic sewage, sewage, livestock and other organic wastewater. The present invention relates to a soil-coated wastewater purification treatment system that can collectively treat polluted water, sedimentation sludge, and odor generated during treatment.

In recent years, the discharge of sewage, which contains a large amount of various organic pollutants, is increasing due to the increase in population density, and in particular, the discharge of various kinds of household sewage is also increased due to the spread of flush toilets. In particular, livestock wastewater containing manure as a major component of the livestock industry is seriously polluting the air surrounding livestock farms not only because of soil and water pollution, but also due to its characteristic odor.

In order to treat the waste water as described above, in the case of sewage discharged from each home, the aerobic decomposition treatment and anaerobic decomposition treatment process using sedimentation and various decomposing microorganisms after collecting to sewage terminal treatment plant through sewage pipes buried underground After performing the denitrification and dephosphorization process therefrom, the wastewater treatment process including a series of processes of filtration and then discharged through the sedimentation process was performed again.

However, in the treatment process as described above, the seeding of the decomposing microorganisms required in each process is required in order to increase the treatment efficiency in the aerobic and anaerobic decomposition process, denitrification and dephosphorization process of various organic substances contained in the waste water, In addition, there is a problem in that the temperature and pH to continuously maintain the growth environment of the decomposed microorganism as described above must be continuously managed and controlled, and the load of wastewater flowing into the treatment plant due to climatic effects such as heavy rainfall is excessive. If it is lowered properly, there is a problem that it is difficult to properly treat the waste water, as well as the living environment of nearby residents seriously infringed by the bad smell generated in the sewage treatment plant as described above.

On the other hand, in the case of livestock wastewater, the concentration of toxic organic matter contained in the wastewater is so large that it cannot be compared with domestic wastewater, and it is more difficult to set appropriate conditions in the aerobic and anaerobic decomposition process, denitrification and dephosphorization process as described above. There is a problem that excessive treatment costs such as the need to have a separate odor removal facility is very bad odor generated during treatment.

In order to solve this problem, researches are attempting to use the soil's self-cleaning ability to use it in manure, urine, sewage, and odor treatment during daily life.

In general, there are a wide variety of organisms in the soil zone, including large predators such as moles and ground rats, large predators such as ground centipedes and spiders, medium predators such as mites and nematodes, and small predators such as protozoa, and these and plants. In addition to being able to see large-scale decomposers such as earthworms and millipedes, chain detoxification, condensation, and medium-sized decomposers, such as earthworms, they are in charge of organic matter decomposition and are extremely microscopic. Microorganisms such as algae, filamentous fungi, actinomycetes and bacteria, and a myriad of biodiversity inhabit.

All kinds of living organisms require different growth environment bases, but they can easily coexist in a limited space inside the soil, unlike other biospheres. As long as non-uniformity of redox potential of neighboring pores is allowed, chemical change that can not occur even in a uniform place can occur, so that the natural purification efficiency for various organic pollutants contained in the waste water can be maximized.

Regarding the wastewater purification treatment apparatus using the excellent natural purification capacity of the soil space, the soil layer in which plant species are transplanted is installed in the upper state with the contact media made of granite or the like in the rostol having a plurality of through holes formed on the surface thereof. After that, install a series of soil-coated wastewater purification treatment tanks, which are installed on the upper side in a treatment tank of a constant size in which a diffuser is installed on the lower side, in series or in parallel according to the amount of wastewater. Soil-covered wastewater purification tank that allows various types of organic pollutants contained in wastewater to be absorbed by contact media installed in each treatment tank and effectively decomposed by microorganisms in the soil Is known.

The soil-coated wastewater septic tank as described above has the advantage that the maintenance process is simple and the operating cost is low compared to conventional chemical or biological wastewater treatment by effectively utilizing the natural purification function of the soil itself. Soil coating type treatment tank has a limit to the type of media that is in contact with the waste water because rostol and coating layer are installed inside, so that the filtration efficiency is not lowered relatively. There is a defect that the soil layer installed in the upper part settles down, and the type of contact media filled in the treatment tank is limited, so the final filtration of the treated water and the treatment of residual harmful impurities should be provided with separate filtration facilities. For this purpose, if a filtration device is added, secondary contaminants may be Not only can it be generated, but also in the treatment of the settling sludge generated during the treatment process has to be classified as a cake through the dehydration process, there is a problem incurred the cost of adding this process.

In addition, in the soil-coated wastewater treatment device as described above, anaerobic gas generated during the treatment is partially absorbed and filtered through the soil part installed on the upper surface of each treatment tank, but a separate device for odorous components is not provided and thus, perfect deodorization There was a problem that could impair the environment around the treatment plant by the impossible.

The present invention is to solve the above-mentioned problems, in the soil-type purification tank, the organic pollution by appropriately installing a treatment tank, such as sedimentation separation tank, contact oxidation tank, precipitation tank, contact filtration tank, etc., which are equipped with various contact media In addition to maximizing the decomposition efficiency of materials, the treatment water and sludge can be finally filtered, dried, and oxidized and fermented to prevent costs incurred by additional facilities such as separate physical and chemical filtration devices. The purpose of the present invention is to provide a soil type wastewater purification treatment tank capable of purifying anaerobic gas generated continuously.

1 is a plan view of the soil type wastewater purification apparatus of the present invention

2 is a cross-sectional view taken along the line a-a 'of FIG.

3 is a cross-sectional view taken along the line b-b 'of FIG.

4 is a cross-sectional view taken along line c-c 'of FIG.

5 is a cross-sectional view taken along the line d-d 'of FIG.

6 is a cross-sectional view taken along the line ′ of FIG. 1.

7 is a cross-sectional view taken along line f-f 'of FIG.

<Explanation of symbols for main parts of drawing>

1: Raw water storage pump tank 2: Precipitation separation tank (anaerobic tank)

3: first contact oxidation tank (aerobic bath) 4: second contact oxidation tank (aerobic bath)

5: Oni Precipitation Tank (Aerobic Tank) 6: Third Contact Oxidation Tank (Aerobic Tank)

7: Contact filtration tank (anaerobic tank) 8: Photosynthetic oxidation tank (anaerobic tank)

9: sludge concentrate storage tank 10: concentrated sludge storage tank

11: discharge trench treatment device 12: plant filtration treatment device

13: sludge treatment apparatus 14: soil deodorization apparatus

15, 15'.15 ": diffuser 16,16a, 16b: lost stall

16 ', 35: through hole 17: crushed stone contact media

18: Maternal network 19: Earthworm soil layer

20: ceramic contact medium 21: inspection hole pipe

22: steel can-styropole contact medium 22 ': support medium (ceramic contact medium)

23: charcoal contact media 24: transparent cover

25: steel can-charcoal-artificial aggregate contact media 26, 126: lower trench

26 ', 126': Base 27: upper trench

28: collecting oil pipe 28 ': supplying air pipe

29,29 ', 129': Water supply pipe 30, 130: Gravel layer

31: Artificial soil-charcoal contact media 32: Plant

33: polymer sheet 34: hole removal tube

35: Oni oxidation fermentation tunnel 36: check hole

37: discharge manhole 38: blower

FB: feedback pipe SP: sludge feed pump

WP: Wastewater Transfer Pump SL: Sludge Transfer Pipe

WL: Wastewater Transport Pipe

The present invention for achieving the above object is a soil-type wastewater purification treatment apparatus, raw water storage pump tank; The maintenance diffuser is installed on one side of the lower side, and a rostol having a plurality of holes formed on the surface thereof is installed therein, and inside the rostol is filled with crushed stone contact media, and the upper of the crushed stone contact media A sedimentation separation tank in which a mother pipe network and an earthworm soil layer are laminated; A first contact oxidation tank having a detachable diffuser installed at one lower side thereof, having a rostol having a plurality of through holes formed therein, and having a ceramic contact medium filled therein; The diffuser is installed on one side of the lower side, and upper and lower rostols with a plurality of through holes formed on the surface thereof are installed therein, the lower rostol is filled with a steel can-styropole contact medium, and the upper rostol has a support medium. A second contact oxidizing tank filled with a top layer of the upper rostol, in which a capillary network and an earthworm soil layer are stacked; Oni precipitator is installed on the upper side and the support pipe is stacked on top of the capillary network and earthworm soil layer; The diffuser is installed on one side of the lower side, and upper and lower rostols with a plurality of through holes formed on the surface thereof are installed therein, the lower rostol is filled with a steel can-styropole contact medium, and the upper rostol has a support medium. A third contact oxidizing tank filled with a top line of the upper rostol, in which a capillary network and an earthworm soil layer are stacked; The diffuser is installed on one side of the lower side, and a rostol having a plurality of through holes is installed therein, and the inside of the rostol is filled with charcoal contact media, and the upper part of the charcoal contact media is a maternity network and an earthworm. A contact filtration tank in which soil layers are laminated; On one side, the sedimentation separation tank, the contact oxidation tank, the sludge feed tank and the sludge feed pipe connected to the contact filtration tank are installed to be penetrated, and the support media is installed on one side of the upper side, and the mother pipe network and the earthworm soil layer are stacked on the upper side. Sludge concentration tank; A concentrated tank holding tank having an diffuser installed at one side thereof; The lower trench having a plurality of compartments is installed at the lower part, and the oni oxidation fermentation tunnel with a plurality of through holes is installed at the upper part, and the bark media covering layer and the capillary network are sequentially stacked on the upper part, and the earthworm soil layer is covered. Sludge treatment apparatus; A polymer sheet is installed at a lower portion of the polymer sheet, and a gravel layer and a hole deodorization pipe are sequentially installed on the upper portion of the hole deodorization pipe. Provide aquaculture wastewater treatment system.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a plan view of a soil type wastewater purification apparatus according to an embodiment of the present invention, Figure 2 is a cross-sectional view taken along the line a-a 'of Figure 1, Figure 3 is a cross-sectional view taken along the line b-b' of FIG. 4 is a cross-sectional view taken along line c-c 'of FIG. 1, FIG. 5 is a cross-sectional view taken along line d-d' of FIG. 1, FIG. 6 is a cross-sectional view taken along line e-e 'of FIG. 1, and FIG. As a cross-sectional view, the raw water storage pump tank (1); The diffuser 15 is provided on one side of the lower side, and a rostol 16 having a plurality of through holes 16 'formed on the surface thereof is installed therein, and the crushed stone contact medium 17 is formed inside the rostol 16. ) And a sedimentation separation tank (2) in which a capillary network (18) and an earthworm soil layer (19) are stacked on top of the crushed stone contact filter (17);

On the lower side, separate diffusers 15 'and 15 "are provided, and a rostol 16 having a plurality of through holes 16' formed on the surface thereof is provided therein. The first contact oxidation tank 3 is filled with a ceramic contact medium 20;

The diffuser 15 is provided on one side of the lower side, and upper and lower rostols 16a and 16b having a plurality of through holes 16 'are formed therein, and steel cans are disposed on the lower rostol 16a. -The styropole contact medium 22 is filled, the upper rostol 16b is filled with the support medium 22 ', and the upper portion of the upper rostol 16b is the capillary network 18 and the earthworm soil layer 19 A second contact oxidizing tank (4) having stacked);

A support filter 22 'is provided on one side of the upper part, and the oniprecipitation tank 5 in which the mother pipe network 18 and the earthworm soil layer 19 are stacked on the upper side thereof;

The diffuser 15 is provided on one side of the lower side, and upper and lower rostols 16a and 16b having a plurality of through holes 16 'formed on the surface thereof are provided therein, and a steel can is provided on the lower rostol 16a. -The styropole contact medium 22 is filled, the upper rostol 16b is filled with the support medium 22 ', and the upper portion of the upper rostol 16b is the capillary network 18 and the earthworm soil layer 19 A third contact oxidizing tank (6) having laminations);

The diffuser 15 is provided on one side of the lower side, and a rostol 16 having a plurality of through holes 16 'formed on the surface thereof is installed therein, and the charcoal contact media 23 is formed inside the rostol 16. ) And a contact filtration tank (7) in which a mother pipe network (18) and an earthworm soil layer (19) are stacked on top of the charcoal contact filter (23);

A photosynthesis oxidation tank (8) having a maintenance diffuser (15) installed on one side of the lower side and a transparent cover (24) installed on an upper surface thereof;

The lower trench 26 and the upper trench 27 having a plurality of compartments filled with the steel can-charcoal-artificial aggregate contact media 25 are stacked and installed in the lower trench 26, and the air hole tube for air supply is provided inside the lower trench 26. (28 ′) and the collecting oil pipe net 28 are sequentially installed in the longitudinal direction, and the water supply oil pipe tube 29 coated with a bark 29 'on the upper trench 27 is provided in the longitudinal direction. And a discharge type trench processing apparatus 11 having a capillary network 18 installed thereon and covering the earthworm soil layer 19.

One side of the sedimentation separation tank (2), contact oxidation tank (3) (4), sludge settling tank (5), contact filtration tank (7) and photosynthetic oxidation tank (8) connected to the sludge feed pipe (SL) is installed through A sludge thickening tank (9) having a support medium (22 ') installed on one side of the upper part, and having a mother pipe network (18) and an earthworm soil layer (19) stacked on the upper side thereof;

A concentrated tank storage tank 10 having a diffuser 15 installed at a lower side thereof;

A lower trench 126 having a plurality of compartments is installed at a lower portion thereof, and a sludge oxidation fermentation tunnel 35 having a plurality of through holes 35 'is provided thereon, and a bark material 129' covering layer thereon. A sludge treatment apparatus 13 in which a mother pipe network 18 is sequentially stacked and the earthworm soil layer 19 is covered;

A polymer sheet 33 is installed at a lower portion thereof, and a gravel layer 130 and a hole deodorization pipe 34 are sequentially stacked on the polymer sheet 33, and a maternal network 18 is disposed at an upper part of the hole deodorization pipe 34. It provides a soil-type wastewater purification treatment device, characterized in that it comprises a soil deodorization device (14) and earthworm soil layer 19 is installed.

As described above, the first contact oxidation tank 3, the second contact oxidation tank 4, the third contact oxidation tank 6, and the contact filtration tank 7 are provided with earthworm soil layers 19 provided on the surface portions of the treatment tanks. The inspection hole pipe 21 can be installed to reach the bottom surface of the rostol 16. This is to collect the test water in each treatment tank and to measure the environment inside the contact medium. Based on the analysis of, it is possible to prevent the deterioration of wastewater decomposition efficiency due to overloading of sludge by prolonged operation by washing and drawing out thalonia in the contact media at the appropriate time.

In addition, the upper part of each treatment tank may be provided with an inspection opening 36 provided with an openable lid 36 'on one side in order to easily perform the action such as replacement of contact media during operation.

Referring to the operation of the soil-type wastewater purification treatment apparatus of the present invention having the above configuration as follows.

First, the wastewater collected from a general household is introduced into the raw water storage pump tank 1 after the pretreatment process such as the sedimentation tank treatment process and the screen treatment. The waste water introduced in this way stays for about 10 to 30 minutes, and then maintains an appropriate load by a transfer means such as a waste water transfer pump (WP) installed under the raw water storage pump tank (1). Inflow.

In the raw water storage pump tank 1, odor occurs because the contact between the waste water and the earthworm soil layer is not made. Therefore, the anaerobic gas generated from the raw water storage pump tank 1 is blown and processed by the soil deodorization device 14 which will be described later.

Subsequently, as described above, most of the contaminants in the initial wastewater introduced into the sedimentation separation tank 2 are precipitated, and some of them float and decompose during the stay, and the waste water surface is in contact with the crushed stone inside the rostol 16. Since it is set to be in continuous contact with the filter medium 17, various organic matter decomposing microorganisms inhabiting the earthworm soil layer 19 in the upper part of the wastewater contained in the waste water by the decomposed microbial group that is introduced and propagated into the crushed stone contact media (17) It can exhibit excellent resolution for organic pollutants.

Therefore, a part of the floating sludge is disintegrated by the above-mentioned soil-degrading microorganisms on the surface of the crushed stone contact media 17 of the wastewater surface, and in the case of sludge, the weight loss is reduced by anaerobic digestion. This is done.

In the decomposition process as described above, the odor component is passed through the earthworm soil layer 19 coated on the sedimentation separation tank (2) in the process of volatilization, it can be oxidized by the microorganisms in the soil zone to prevent external leakage of odor. have.

The diffusers 15, 15 'and 15 "installed in each treatment tank installed in the present invention are settled and deposited in the treatment tank at the same time to promote oxidation and aerobic decomposition of contaminants contained in the waste water. In order to facilitate the extraction of sludge by inducing injuries caused by aeration when necessary transfer of sludge.

Earthworm soil layer 19 used in the present invention means a breathable soil formulated to actively live in the habitat of microorganisms, protozoa, welfare animals and earthworms, which can decompose and oxidize pollutants by the above-described decomposition organisms will be.

Such earthworm soil is preferably organic soil: crushed bark: artificial soil: feet: charcoal 75 to 85% by weight: 3 to 6% by weight: 9 to 11% by weight: 2 to 4% by weight: 1-3 After mixing by weight%, the normal microorganisms such as photosynthetic bacteria, lactic acid bacteria, actinomycetes, yeast bacteria or filamentous fungi are grown alone or in a mixed state and cultured at room temperature.

The organic soil is used as the soil of the field or forests with excellent breathability, in the case of artificial soil black soil: volcanic natural soil: powdered coal 45 to 55% by weight: 23 to 27%: 23 to 27% by weight After firing and pulverizing, it is used.

In the earthworm soil layer 19 described above, by selecting and planting plants having excellent effects on the removal of grass or nitrogen or phosphorus, it is possible to further enhance the decomposition effect of the organic material targeted in the present invention.

The mother earth network 18 is installed between the earthworm soil layer 19 and the respective contact media used in the present invention, which not only allows the air to smoothly flow up and down between the contact media and the earthworm soil layer 19. This is to prevent the settlement of the upper earthworm soil layer 19 and to maintain the unsaturated state to promote the activity of various microorganisms.

The waste water treated for a predetermined time in the sedimentation separation tank 2 as described above is transported to the first contact oxidation tank 3 through the waste water transport pipe WL, wherein the waste water on the inlet side is discharged from the precipitation separation tank 2. Anaerobic bacteria are introduced into a highly enhanced state, so it should be changed to aerobic state in a short time.

Therefore, in the case of the diffuser installed in the lower portion of the first contact oxidation chamber 3 of the present invention, the diffuser 15 'installed on the wastewater inflow side by separating and installing the inflow and outflow portions of the wastewater increases the aeration amount and the outflow side The diffuser 15 "can control the amount of aeration relatively small, and thus can effectively control the activity of the activated sludge.

The ceramic contact medium 20 used in the first contact oxidation chamber 3 is fired at a high temperature of about 800 ° C. with ocher as a main component and a foaming agent is added, and is not only chemically stable but also has a pore density therein. It is very effective for the early growth of aerobic microorganisms and has a very positive effect on the activity of various degraded microorganisms due to its unique far-infrared emission.

The preferred physical composition of the ceramic contact media 20 as described above is preferably crushed ocher: elvan: charcoal powder 87 to 93% by weight: 3 to 6% by weight: 3 to 6% by weight. Since the ceramic contact medium 20 having such a composition has a large heat capacity and hydrophilicity, and is an excellent material for promoting adhesion and propagation of microorganisms, the surface part of the media becomes the most suitable environment for aerobic bacteria and contacts the air in the microcavity inside the media. The part that is not shown is an excellent treatment capacity by providing an excellent proliferation environment of anaerobic degrading microorganisms.

In addition, the ceramic contact medium 20 as described above exhibits a porosity of about 75 to 80% during filling, and thus may exhibit excellent treatment efficiency because of the large contact area with the waste water. Because of this, no closing or clogging occurs during operation, so it is easy to maintain and reinstall.

The waste water treated for a predetermined time from the first contact oxidation tank 3 as described above is introduced into the adjacent second contact oxidation tank 4, and the lower contact stall 16a of the second contact oxidation tank 4 is contacted. The steel can-filled styropole contact medium filled with the medium is made by mixing steel cans and styropol in a predetermined ratio and putting them in a nonwoven fabric bag made of polymer material and then putting them in a mesh made of polyethylene. It is to be raised by the continuous contact with the upper contact medium to induce more efficient contact with various decomposition microorganisms in the soil. In addition, the steel can is not only the role of the contact medium but also to promote the denitrification, dephosphorization reaction by the oxidation of iron to exhibit a kind of catalytic action during the nitrogen and phosphorus removal reaction to form a plurality of through holes to increase the contact efficiency with the waste water. It is preferable to use.

Due to the oxidation reaction described above, the steel can is reduced by about 2% of its own weight in one year, so it needs to be replenished and replaced every time. In this case, it is easy to check and replace the media. In order to perform it, it is preferable to install the check hole 36 and the check hole 36 'on the upper side of the second contact oxidation tank.

In addition, when the weight and volume of the media are excessively reduced by oxidation of the steel can, there is a possibility of falling or sinking of the earthworm soil layer 19 installed on the upper side. It is installed to fill the support medium (22 ') made of crushed stone or ceramic material.

The wastewater purified in the process from the sedimentation separation tank (2) to the second contact oxidation tank (4) is introduced into the sludge settling tank (5) and undergoes the sedimentation treatment process of sludge contained in the wastewater. In (5), there is no acid pipe installed, so anaerobic decomposition of organic pollutants takes place and precipitation occurs. At this time, in order to prevent soil settlement by waste water, a support medium 22 'is installed at the upper side of the sludge settling tank.

Subsequently, the wastewater introduced from the sludge settling tank 5 is introduced into the third contact oxidizing tank 6 having the same function as the second contact oxidizing tank 4 and undergoes an aerobic decomposition process. The reason why the contact oxidizing tank is installed is to superimpose wastewater with BOD less than 10mg / l, more than 95% of suspended solids, more than 85% of denitrification efficiency, more than 90% of dephosphorization rate and pH 6.5 to 7.5. The support medium 22 ′ installed in the third contact oxidation tank 6 has the same function as the second contact oxidation tank 4.

Subsequently, the wastewater flows into the contact filtration tank 7 for adsorption and filtration of various fine impurities generated in the above-described treatment process.

The contact filter installed in the contact filtration tank (7) is a charcoal contact filter 23 having the same effect as activated charcoal is used to wrap the charcoal in a non-woven fabric and put it in the net, and such a charcoal contact filter 23 is contained in the waste water Excellent adsorption capacity for oil and inorganic impurities.

In the above-described precipitation separation tank (2), the first contact oxidation tank (3), the second contact oxidation tank (4), the sludge settling tank (5), the third contact oxidation tank (6) and the contact filtration tank (7). The precipitated sedimentation sludge is drawn by the sludge feed pump (SP) installed in the lower part of each treatment tank and transferred to the sludge concentration tank (9) through the sludge conveying pipe (SL). Secondary sedimentation in the reservoir tank (10). The equalized supernatant of the sludge concentrate storage tank 9 and the concentrated sludge storage tank 10 is returned to the raw water storage pump tank 1 through a feedback pipe FD.

The sedimentation sludge collected second from the concentrated sludge storage tank 15 is transferred to the sludge treatment apparatus 13 through the sludge conveying pipe SL. The sludge transferred as described above is oxidized and fed to earthworms or various decomposing microorganisms in the soil as it flows into the sludge oxidation fermentation tunnel 35 and proceeds, and the amount of sludge is reduced and the organic fertilizer component is changed. . In addition, a part of the sewage is infiltrated into the soil area through the bark filter media 129 'through the through hole 35', which is also oxidized, fermented and purified, and excess water flows into the lower trench 126. The oxidized fermented sludge can be released by being discharged.

When the wastewater treated from the contact filtration tank 7 is subjected to an impurity treatment process as a decomposing microorganism exhibiting photodegradation by solar light, the photosynthetic oxidation tank 8 is disposed between the contact filtration tank 7 and the sludge concentration tank 9. Install it.

A transparent cover 24 made of a transparent acrylic material or the like is installed on the upper surface of the photosynthetic oxidation tank 8 so that external sunlight can be smoothly transmitted into the photosynthetic oxidation tank 8, and is fixed in the photosynthetic oxidation tank 8. The waste water treated for a time is transferred to the feedwater oil hole tube 29 installed inside the discharge type trench treatment device 11 through the waste water conveying pipe WL, and thereafter is infiltrated into the soil by capillary phenomenon and then decomposed. The discharge trench device 11 is formed in a constant width and length, as shown in Figures 3 and 5, the lower trench 26 made of a polymer material such as vinyl chloride on the top of the trench well ground so as not to sink ) Is horizontally installed.

In the lower trench 26, a collecting oil pipe tube 28 is installed in the longitudinal direction, and is connected to the manhole 37. The lower trench 26 is covered with a steel can-charcoal-artificial aggregate contact medium 25 including an artificial aggregate such as magmata, and an air blower 38 and an upper portion of the collecting oil pipe tube 28 are provided. Connected air supply net pipe (28 ') is installed by the air inflow can be maximized the activity of aerobic bacteria can greatly improve the decomposition efficiency.

An upper trench 27 processed with a polymer material is installed on a pedestal 26 'installed inside the lower trench 26, and the upper trench 27 has a steel can-charcoal-artificial aggregate contact medium 25. Is filled, and the water supply oil tube 29 is provided in the longitudinal direction.

Around the water supply oil tube 29 is wrapped in a wood contact medium (29 ') chopped to an average size of about 1 cm or less size and then cover the earthworm soil layer 19 on the outside, which is the earthworm soil used The same as the organic soil and finely crushed bark, pits and artificial aggregates are mixed in an appropriate ratio. In order to prevent the settlement of the soil during the coating of the earthworm soil layer 19, a maternity network 18 is installed on the upper portion of the water supply hole tube 29.

As described above, about 20 to 30% of the wastewater introduced into the feedwater hole net pipe 29 of the discharge type trench processing apparatus 11 is infiltrated into the soil by capillary action through the bark filter medium 29 '. In the process of being absorbed by the winding, pretreated by various soil microorganisms, surplus waste water is first dropped into the upper trench (27), and then passed through the steel can-charcoal-artificial aggregate contact filter (25), while the adsorption filtration by charcoal and After denitrification and dephosphorization are made while contacting the steel component of the steel can, the liquid flows to the lower trench 26 again in the table direction, and passes through the steel can-charcoal-artificial aggregate contact media 25 installed therein, while adsorbing filtration, denitrification, and dephosphorization. After this is made to be collected and discharged into the collecting net pipe (28).

In the discharge trench processing apparatus 11, reference numeral 37 denotes a discharge manhole.

In addition to the discharge trench device 11 as described above, as a device for the final treatment of the wastewater treated from the photosynthetic oxidation tank 8, the plant filtration treatment device 12 may be installed in parallel to perform the wastewater treatment process. , As shown in Figure 5, the plant filtration treatment device 12 is provided with a gravel layer 30 at the bottom as shown in Figure 5 artificial soil-charcoal contact media 31 is installed on the gravel layer 30 and the artificial soil -The earthworm soil layer 19 planted with plants 32 on top of the charcoal contact media 31 has a structure that is covered, and the introduced wastewater passes through the gravel layer 30 and the artificial soil-charcoal contact media 31. By directly contacting the denitrification and dephosphorus microorganisms inhabiting the root portion of the plant 32 planted in the earthworm soil layer 19, it is possible to finally remove nitrogen and phosphorus remaining in the wastewater that has been processed.

The odor generated in the raw water storage pump tank 1 is introduced into the hole deodorization pipe 34 installed in the soil deodorization device 14 and then dispersed and decomposed into the soil layer 19 to be purified. This is because the earthworm soil layer 19 of the present invention inhabits a large amount of effective microorganisms to remove odors such as acetic acid bacteria and lactic acid bacteria, thereby oxidizing and reacting aerobic decomposition of components such as ammonia or hydrogen sulfide, which act as a causative agent of odor generation.

Therefore, the soil deodorizing apparatus of the present invention can exhibit a semi-permanently effective deodorizing effect even without any chemicals.

The polymer sheet 33 installed at the bottom of the hole deodorization pipe is made of synthetic resin material such as vinyl chloride, which prevents odors from falling into the lower soil layer and allows the upper earthworm to rise to the soil layer as well as due to inflow of rainwater. This is to prevent contaminated water from penetrating the lower soil layer.

Hereinafter, the present invention will be described in more detail with reference to the following examples.

<Example>

After collecting 1000 kg of raw wastewater from the domestic sewage treatment plant, it was purified using the soil-type wastewater soil-type wastewater purification apparatus of the present invention described above, and the residence time in each treatment tank is shown in the following 1.

Treatment tank Raw Water Storage Pump Tank Sedimentation tank First contact oxidizer 2nd contact oxidation tank Oni Precipitator Third Contact Oxidation Tank Contact Filtration Tank Photosynthetic oxidation tank Residence time 21.4 minutes 31 hours 20 hours 7.97 hours 5.27 hours 7.68 hours 6.14 hours 4 hours

In order to determine the pollution degree of the collected raw waste water and the degree of purification of the treated water according to the present invention, the pH, SS (floating matter), COD (chemical oxygen demand), and BOD (biological oxygen demand) of each of the following test methods ), Total nitrogen content, total phosphorus content, etc. were measured and the results are shown in Table 2 below.

-Suspension material (SS) content measurement test-

After measuring the weight of the glass fiber filter sufficiently dried, it is attached to the filter, and then, the appropriate amount of the sample is filtered by suction while injecting it into a separate filter, and the filtered glass fiber filter is separated from the filter and dried sufficiently again. Substituting the measured value into the following Equation 1 measures the content of each suspended solids.

In Equation 1,

a: glass fiber filter weight before sample filtration (mg / l)

b: glass fiber filter weight (mg / l) after sample filtration

V: amount of sample (ml)

Chemical Oxygen Demand (COD) Measurement Test

Mix the collected sample with water to make 100 ml, mix 10 ml of sulfuric acid and about 1 g of sulfuric acid, leave for several minutes, mix 10 ml of 0.25N-potassium permanganate solution, heat for 30 minutes in boiling water, and then 0.25N- While maintaining 60-80 ℃ with 10ml of sodium hydroxide solution, use 0.25N-potassium permanganate solution until the color of solution becomes pale red. Separately, only 100ml of water is used under the same conditions as above. The test is carried out and substituted into the following Equation 2 to find the chemical oxygen demand.

In Equation 2,

a: 0.025 N-potassium permanganate solution (ml) consumed in the titration test

b: 0.025 N-potassium permanganate solution (ml) consumed in titration of the sample

f: 0.025N-potassium permanganate solution (ml) titer

V: amount of sample (ml)

Biological Oxygen Demand (BOD) Test

After diluting the collected sample with dilution water, the aerobic microorganisms are seeded and incubated for 5 days while maintaining the temperature of 20 ° C. to measure each dissolved oxygen level (DO) for each step, and the biological oxygen demand is measured by substituting the following equation (3). do.

In Equation 3,

D ₁ : DO (mg / l) after standing for 15 minutes in diluted (prepared) sample (sample)

D ₂ : DO (mg / l) of diluted (prepared) sample (sample) after incubation for 5 days

B ₁ : DO (mg / l) before incubation of diluted seedlings when measuring BOD of seedlings

B ₂ : DO (mg / l) after cultivation of diluted seedlings when measuring BOD of seedlings

f: Ratio of the seedling solution content (y%) in the diluted seedling solution when measuring the BOD of the seedling solution to the seedling solution content (x%) in the diluted sample when measuring the BOD of the sample (x / y)

P: dilution factor of the sample in the dilution sample (dilution amount / sample amount)

Total nitrogen measurement test

50 ml of the sample is placed in a decomposition bottle, 10 ml of alkaline and potassium sulfate solution is added, the cap is closed and shaken, and then it is put into a high-pressure steam sterilizer and heated. It is heated and decomposed for 30 minutes from the time of about 120 degreeC, the decomposition bottle is taken out, it is left to cool, and it pre-processes.

Take the supernatant of the sample pretreated by the method as described above, filter it with glass fiber filter (GF / C), discard 5-10 ml of the first filtrate, and accurately take 25 ml of the filtrate and transfer it to a 50 ml beaker or color tube. 5 ml of hydrochloric acid is added to pH 2-3, and a part of this solution is transferred to a layer-length 10mm absorption cell to make a sample solution. Separately, 50 ml of water is tested according to the test method of the sample, and it is used as the blank test solution. Using the blank test solution as a control, the absorbance of the test solution was measured at 220 nm, and the nitrogen content was obtained from the calibration curve prepared in advance, and the total nitrogen concentration (mg / l) in the sample was calculated by Equation 4 below.

In Equation 4,

a: amount of nitrogen obtained from the calibration curve (mg)

V: Sample amount used for pretreatment (ml)

Total Measurement Test

50 ml of the sample is placed in a Kjeldahl flask, 2 ml of nitric acid is added, and the mixture is gradually heated and cooled until the liquid volume is about 10 ml. Add 2-5 ml of nitric acid and 2 ml of sulfuric acid, and continue heating to heat until white sulfuric acid of sulfuric acid occurs violently. If the color of the solution is not clear, allow it to cool and then add 2-5 ml of nitric acid and repeat the heat decomposition. After the decomposition, add about 30ml of water and heat it gently for about 10 minutes to dissolve the soluble salt and allow to cool.

Neutralize this solution with P-nitrophenol (0.1 W / V%) as an indicator and add sodium hydroxide solution (20 W / V%) and sodium hydroxide solution (4 W / V%) until the color of the solution becomes yellow. Transfer to a 50 ml flask and add water to the mark before pretreatment.

Take 25 ml of the supernatant of the pretreated sample, place it in a test tube with a stopper, add 2 ml of ammonium molybdate and ascorbic acid mixture, shake, and leave for 15 minutes at 20 to 40 ° C. Transfer a part of solution to 10mm absorption cell of layer length and use it as the sample solution. Take 50ml of water separately and test according to the test method of sample. Using the blank test solution as a control, the absorbance of the test solution at 880 nm is measured, and the concentration (mg / l) is calculated from the following Equation 5 by calculating the amount of total phosphorus from a previously prepared calibration curve.

In Equation 5,

a: amount of phosphorus obtained from the calibration curve (mg)

Other measurement tests

The measurement of pH, the measurement of chromaticity, the determination of the content of Cr, the determination of the content of Zn, the measurement of the content of trichloroethylene and the like are carried out by a conventional instrumental analysis test method.

Category Metric Sewage Example pH 5.9 7.3 SS (mg / l) 190 5 or less COD (mg / l) 84 below 10 BOD (mg / l) 250 5 or less Total phosphorus (mg N / l) 2.6 0.3 or less Total Nitrogen (mg P / L) 16 4.1 and below

As can be seen from Table 2, in the wastewater treatment process according to the present invention, the pH of the embodiment is shown to be close to neutral to about 7.1 even without adding any chemicals for pH control, showing a very good pH control effect, It turns out that remarkable purification effect is shown also in all other measurement items. In particular, about 95% of SS (floating material) residual amount was found to be reduced, and it can be seen that the wastewater treatment method according to the present invention shows a very excellent sludge removal effect.

In addition, it can be seen that the COD, BOD, total nitrogen content and total phosphorus content of the embodiment is significantly improved when compared with the raw wastewater, which is continuously supplied by the soil layer installed in each treatment tank of the wastewater treatment apparatus of the present invention. Anaerobic microorganisms actively decompose and oxidize sludge, and decomposer organisms such as earthworms have a circulatory effect that improves the growth of planted organic degradation plants by ingesting these by-products and supplying secretions of organic components to the soil layer. It is because it can accelerate the decomposing of a bar.

As described above, the present invention can maximize the decomposition efficiency of organic pollutants by appropriately installing treatment tanks such as sedimentation separation tanks, contact oxidation tanks, precipitation tanks, and contact filtration tanks in which various contact media are installed in the soil type purification tank. In addition, by finally filtering or drying the treated water and sludge, it is possible to prevent the cost incurred by additional facilities such as a separate physical and chemical filtration device, and forcibly withdraw anaerobic gas continuously generated during the treatment process. It is a useful invention to provide a soil type wastewater purification treatment tank that can be purified after.

Claims (6)

A soil type wastewater treatment apparatus, comprising: a raw water storage pump tank 1; The maintenance diffuser 15 is installed on one side of the lower side, and a rostol 16 having a plurality of through holes 16 'formed on the surface thereof is installed therein, and the crushed stone is in contact with the inside of the rostol 16. A sedimentation separation tank (2) filled with a filter medium (17) and having a mother pipe network (18) and an earthworm soil layer (19) stacked on top of the crushed stone contact filter material (17); On the lower side, separate diffusers 15 'and 15 "are provided, and a rostol 16 having a plurality of through holes 16' formed on the surface thereof is provided therein, and is disposed on the rostol 16. A first contact oxidation tank 3 in which the ceramic contact medium 20 is filled; The diffuser 15 is provided on one side of the lower side, and upper and lower rostols 16a and 16b having a plurality of through holes 16 'formed on the surface thereof are provided therein, and a steel can is provided on the lower rostol 16a. -The styropole contact medium 22 is filled, the upper rostol 16b is filled with the support medium 22 ', and the upper portion of the upper rostol 16b is the capillary network 18 and the earthworm soil layer 19 A second contact oxidizing tank (4) having stacked); A support filter 22 'is provided on one side of the upper part, and the oniprecipitation tank 5 in which the mother pipe network 18 and the earthworm soil layer 19 are stacked on the upper side thereof; The diffuser 15 is provided on one side of the lower side, and upper and lower rostols 16a and 16b having a plurality of through holes 16 'formed on the surface thereof are provided therein, and a steel can is provided on the lower rostol 16a. -The styropole contact medium 22 is filled, the upper rostol 16b is filled with the support medium 22 ', and the upper portion of the upper rostol 16b is the capillary network 18 and the earthworm soil layer 19 A third contact oxidizing tank (6) having laminations); The diffuser 15 for maintenance is installed on one side of the lower side, and a rostol 16 having a plurality of through holes 16 'formed on its surface is installed therein, and inside the rostol 16 is charcoal. A contact filter (7) filled with a contact filter (23) and having a mother pipe network (18) and an earthworm soil layer (19) stacked on top of the charcoal contact filter (23); One side of the sedimentation separation tank (2), contact oxidation tank (3) (4), sludge settling tank (5), contact filtration tank (7) and photosynthetic oxidation tank (8) connected to the sludge feed pipe (SL) is installed through A sludge thickening tank (9) having a support medium (22 ') installed on one side of the upper part, and having a mother pipe network (18) and an earthworm soil layer (19) stacked on the upper side thereof; A concentrated tank storage tank 10 having a diffuser 15 installed at a lower side thereof; A lower trench 126 having a plurality of compartments is installed at a lower portion thereof, and a sludge oxidation fermentation tunnel 35 having a plurality of through holes 35 'is provided thereon, and a bark material 129' covering layer thereon. A sludge treatment apparatus 13 in which a mother pipe network 18 is sequentially stacked and the earthworm soil layer 19 is covered; A polymer sheet 33 is installed at a lower portion thereof, and a gravel layer 130 and a hole deodorization pipe 34 are sequentially stacked on the polymer sheet 33, and a maternal network 18 is disposed at an upper part of the hole deodorization pipe 34. ) Soil-type wastewater purification apparatus characterized in that it comprises a soil deodorization device (14) is installed and the earthworm soil layer (19) laminated. The contact filtration tank (7) and sludge concentration tank (9) according to claim 1, wherein the photosynthetic oxidation tank (8) having a maintenance diffuser (15) on one side of the lower side and a transparent cover (24) is provided on the upper surface thereof. ) Between; The lower trench 26 and the upper trench 27 having a plurality of compartments filled with the steel can-charcoal-artificial aggregate contact media 25 are stacked and installed in the lower trench 26, and the air hole tube for air supply is provided inside the lower trench 26. (28 ′) and the collecting oil pipe net 28 are sequentially installed in the longitudinal direction, and the water supply oil pipe tube 29 coated with a bark 29 'on the upper trench 27 is provided in the longitudinal direction. It is installed in the upper part of the capillary network 18 is installed, the earthquake soil layer 19, the discharge type trench treatment device 11 is characterized in that it is connected to the photosynthetic oxidation tank (8) through the waste water transport pipe (WL). Soil-type wastewater purification treatment apparatus. According to claim 2, the gravel layer 30 is installed at the bottom and the artificial soil-charcoal contact media 31 is installed on the gravel layer 30, the plant 32 on the artificial soil-charcoal contact media 31 This planted earthworm soil layer 19 is connected to the plant filtration treatment device 12 covered with the photosynthetic oxidation tank 8 through the wastewater feed pipe WL, but is installed in parallel with the discharge trench processing device 11. Soil-type wastewater purification treatment device, characterized in that. The earthworm soil layer (19) according to any one of claims 1 to 3, wherein the earthworm soil layer (19) is organic soil: crushed bark: artificial soil: pit: charcoal powder 75 to 85% by weight: 3 to 6% by weight: 9 To 11% by weight: 2 to 4% by weight: 1 to 3% by weight of mixed microorganisms including photosynthetic bacteria, lactic acid bacteria, actinomycetes, yeasts or filamentous fungi alone or in a mixed state, characterized in that the culture at room temperature Soil-type wastewater purification treatment apparatus. 5. The soil-type wastewater purification according to claim 4, wherein the composition of the ceramic contact medium 20 is ocher: elvan: charcoal powder of 87 to 93% by weight: 3 to 6% by weight: 3 to 6% by weight. Processing unit. The method of claim 5, wherein the organic soil is a breathable soil collected from the outer soil of the field or forest, the artificial soil is black soil: volcanic natural soil: powdered coal 45 to 55% by weight: 23 to 27%: 23 to 27 Soil-type wastewater purification treatment apparatus, characterized in that the calcined and pulverized after mixing by weight%.