KR0170039B1 - Sewage Treatment in Livestock Facilities - Google Patents

Abstract

In the treatment of contaminants such as manure discharged from a livestock raising facility for raising livestock, by using at least a soil compact mainly composed of corrosive substances or a filler composed of pumice containing the compact and elutable silica component or the eluate thereof. By fermenting, composting, or biotreating the useful microorganisms, and using the useful microorganisms, it is possible to solve the odor problem and to treat the soil at low cost.

Description

Sewage Treatment in Livestock Facilities

1 is a perspective view showing an example of a hog facility used in the treatment method of the present invention.

2 is a flowchart showing an example of an apparatus for performing another processing method of the present invention.

* Explanation of symbols for main parts of the drawings

1: pig company 2: steel frame

3: resin film 4: stepping floor

5: bottom surface 6: diffuser

7: watering pipe 8: opening and closing window

10 container 11: diffuser

12: discharge pipe 20: plural pigs

21: collecting container 22: bar screen

23 solids 24 wastewater

25, 28, 33: pump 26: reservoir

27: vibrating sieve 29: reactor

30: sedimentation tank 31: aerobic tank

32: sludge culture 34: filling material

35: diffuser 36: water tank

39: concentrate tank

The present invention relates to a wastewater treatment method in a livestock facility, and more particularly, to livestock that can process solid matters and wastewater generated in a livestock facility such as a hog facility at low cost and solve odor problems. It relates to the waste disposal method in a facility.

In livestock facilities where pigs and cows raise livestock, large amounts of manure, such as manure, are discharged. These pollutants have high organic matter concentrations and odors, and contaminate rivers around the facility or The living has adversely affected the living environment of the residents. For this reason, in each livestock facility, the sewage treatment facility is installed independently or is installed many times because the installation is required by law.

As an example of the method of treating the wastewater generated from the conventional hog facility, the solids such as feces and the wastewater such as urine were thoroughly separated in the pig house, and the scale of the wastewater treatment facility was determined according to the removal rate of the solids.

The active sludge method is adopted for wastewater treatment, and if the removal rate of the separated solids is low, the load of organic matter is increased. Therefore, the size of the wastewater treatment facility is increased, the installation cost of the facility is increased, power costs, chemical costs, etc. The cost of this is bound to rise. For this reason, there is a fear that it will reduce the profits of the pig farmers and reduce the international competitiveness.

On the other hand, the solid matter is left in a pond made inside the rice paddy, and the situation is to be naturally fermented, and sending wastewater to the solid side has a limit on the area of the pond. In addition, the solid has a bad smell of its own, and as the dwelling nears the pond in recent years, natural fermentation treatment becomes impossible. In addition, a method of incineration of solids may also be considered, but because the cost is too high, it is hardly possible to adopt in hog farms.

In addition, it is difficult to accommodate all the solids in the wastewater treatment facility because the organic matter concentration of the solids themselves is too high.

Accordingly, it is an object of the present invention to provide a method for treating wastewater in a livestock facility that can treat solids and wastewater generated in a livestock facility such as a hog facility at low cost and can also eliminate odor problems.

The first treatment method of the present invention is a method of fermentation by direct fermentation without using a solid matter or waste water treatment facility.

The first step in the above method is a step of forming a stepping ground by spreading a material made by mixing rice hulls, wood chips or the like with compost fermented to the bottom of a livestock raising facility for raising livestock. The fermented compost is preferably cut to a thickness of about 30 to 50 cm, and it is preferable to mix therein chaff, wood shavings, or the like, which is twice as large as the compost. The new stepping-floor is controlled by moisture, and it is desirable to keep the moisture constant.

The second step is a process for making an eluate of a filler composed of at least a soil molded mainly composed of a corrosive or a pumice comprising the molded body and the soluble silica component. The eluate may be manufactured in a separate place and brought into a livestock facility, but a water tank filled with the filler is provided in or near the livestock facility, and water is supplied to the water tank to take out the eluate of the filler. It is desirable to be able to. This is because the immediate use of the product is excellent in terms of effectiveness.

The soil molded body mainly composed of corrosive materials is a pellet formed by mixing corrosive soil, other inorganic materials, and a binder, and the shape may be any shape such as a beetle, a prisms, and a disk. Corrosives are spores of useful microorganisms or those in which a large number of useful microorganisms reproduce. The pumice containing an elutable silica component contains the silica component which can melt | dissolve in water as a clay mineral or a volcanic rock. Elutable silica not only activates water but also assists in the growth of useful microorganisms. As the filler, in addition to the above-mentioned materials, a corrosive soil powder may be included.

The third step is a step of receiving the manure excreted by the livestock while spraying the eluent of the filler on the stepping floor. The spraying method is not particularly limited, but spraying is preferably performed so that it can be uniformly sprayed on the entire surface of the stepping floor.

The fourth step is a process of fertilizing manure together with the above-mentioned material after composting the livestock. That is, after moving the livestock, the stepping floor is piled up like a mountain, oxygen is supplied to the blower from below the stepping floor, and the manure is fermented together with the material to be composted.

By mixing new chaff, wood chips, etc. in this composting process, it can be used as a base material for the stepping floor used next.

In the first treatment method, the eluate of the filler taken out of the water tank may be used as drinking water for livestock. Drinking drinking water containing eluting silica in the livestock promotes the intestinal activation of the livestock and has the effect of reducing the smell of manure.

In addition, when the fertilizer is fertilized by manure together with the above-mentioned material, at least one of soil granules mainly composed of corrosive substances, shaped bodies thereof, or pumice containing eluting silica component is added and mixed, and the cause is not sure, but heat is generated. This happens to have the effect of promoting composting.

An example of a hog facility for carrying out the first method described above is shown in FIG. In FIG. 1, 1 is a pig yarn, and after woven the steel frame 2, a house in which the resin film 3 is coated on the outer circumference can be used.

4 is a stepping floor formed by spreading the material on the bottom surface 4. As for the thickness of the stepboard 4, about 30-50 cm is preferable. 6 is an acid pipe for supplying air from the bottom of the step 4, and 7 is a water pipe. 8 is a plurality of opening and closing windows installed on the side of the house. 9 is a water tank, in which a wire mesh-shaped container 10 is suspended therein, and the container 10 is constituted by at least a soil compact mainly composed of corrosive substances or pumice containing the soil compact and an elutable silica component. The filler to be filled is filled. Below the container 10, the diffuser 11 for supplying air is provided. 12 is a discharge pipe for taking out the eluate, and the eluate sent from the discharge pipe 12 to the above watering pipe 7 is sent to the watering pipe 7 through a spray nozzle (not shown) or the like. Is sprayed on. Manure excreted by pigs is accepted at the step 4. Thereafter, the pigs are moved, and the stepping grounds 4 are piled up like mountains, and oxygen is supplied from the lower part of the stepping beds 4 through the diffuser 6 to ferment the manure together with the mating member to compost.

In the illustrated example, the eluate in the water tank 9 may be used as drinking water for pigs.

Next, the second treatment method of the present invention is a method for treating contaminants such as manure generated in a livestock raising facility in a livestock raising system in a solid treatment system and a wastewater treatment system, which is an improvement on the conventional treatment method.

The first step is a process for accommodating the soil in the receiving container. The collecting container may be provided below the floor using livestock, or may be installed on the side of the floor to incline the floor to fall naturally into the receiving container.

The second step is a process of separating solids and waste water by means of solid / liquid separation means while being transported to or from a receiving bin through a pump via a pump or in a reservoir as described below. As a solid / liquid separation means, it is preferable to use the barscreen which roughly extracts solids, and the vibrating sieve which removes a fine solid, and it is preferable that a vibrating sieve has about 100 mesh eyes. The vibrating sieve can use what is marketed as a section screen. This combination makes it possible to completely separate the solids.

In the third step, after the separation, the solids are transferred to the solids treatment system and the wastewater is transferred to the wastewater treatment system. The waste water treatment system includes a storage tank for receiving waste water, a reaction tank for treating waste water by useful microorganisms, a sedimentation tank, and a soil compact mainly composed of at least a corrosive substance, or a filler composed of pumice containing the molded body and the eluting silica component. It has a sludge culture tank made by filling. In sludge culture tanks, useful microorganisms having functions such as decomposition and resourceization according to organic substances and odorous components are grown. The present invention is characterized by the use of useful microorganisms having functions such as decomposition and resourceization corresponding to organic substances and malodorous components as a treatment medium.

The same thing as mentioned above is used regarding the soil compact, a corrosive substance, and an elutable silica component which mainly comprise a corrosive substance. The corrosive contains a large number of spores or useful microorganisms of useful microorganisms, and elutable silica can multiply useful microorganisms in order to assist the growth of useful microorganisms. Therefore, the growth of such fillers or useful microorganisms is impossible.

The fourth step is to return the useful microorganisms directly or indirectly to the receiving container or to the first receiving portion in the storage tank and solids treatment system of the wastewater treatment system. By returning to the collecting container, it is possible to suppress the occurrence of odor and to return the sludge in the wastewater treatment system to the sludge which is the main agent of the useful microorganism by returning to the storage tank, as well as at the beginning of the solid treatment system. By conveying to a receiving part, generation | occurrence | production of a bad smell is suppressed.

Direct conveyance means conveying from a sludge culture tank, and indirect conveying means conveying from a sedimentation tank etc.

The first accommodating part in the solids treatment system means a place where the solids separated by the solid / liquid separation means are first received.

In this second method, in the first receiving portion of the solids treatment system, it is preferable to compost after mixing with useful microorganisms, followed by stirring and upside down. At the time of the composting, a soil molded mainly composed of a corrosive substance or a pumice containing the molded body and the eluting silica component may be added and mixed. The cause is not known for sure, but because it has the effect of fever to promote the composting.

Further, inside and near the livestock facility, a water tank filled with at least a soil compact mainly composed of by-products or a filler composed of pumice containing the molded body and the eluting silica component is provided in the water tank. The eluate of the filler may be collected by supplying water and used as drinking water for livestock. This is because when the livestock drink drinking water containing eluting silica, the intestinal activation of the livestock can be promoted and the odor from the manure can be reduced.

Further, inside and near the livestock facility, there is provided a concentrate tank filled with at least a soil compact mainly composed of corrosives or a filler composed of pumice containing the molded body and the eluting silica component. The concentrated eluate may be sprayed onto the bottom of the livestock facility. This spreading liquid enters the processing system and serves as an auxiliary function for the growth of useful microorganisms and odor prevention, and if the concentrated eluate is evaporated in the livestock facility and included in the water vapor component in the air, the reason is obvious. However, by activating the air in the livestock facilities, it promotes the health of the livestock, and also has an excellent effect on preventing odor.

2 shows an example of a processing apparatus for carrying out the second method described above. In FIG. 2, 20 is a plurality of pig yarns, and the dirt discharged from this pig house 20 is accommodated in the receiving container 21. In FIG. The receiving container 21 is installed on the side of the bottom surface of the pig sand 20, by inclining the bottom surface, so that the fall falls naturally. The receiving screen 21 is provided with a bar screen 22, the soil is separated into a solid 23 and waste water 24. The wastewater is sent to the storage tank 26 of the wastewater treatment system using the pump 25. Subsequently, fine solids are removed by the vibrating sieve 27 provided in the storage tank 26.

The wastewater in the reservoir 26 is sent to the reactor 29 using a pump 28 and then treated by useful microorganisms. The sludge sent from the reaction tank 29 to the precipitation tank 30 by natural dropping is separated into a solid and a liquid to obtain treated water. Sludge soaked in the settling tank 30 is sent to an aerobic tank (好 氣 槽: 31). The sludge in the aerobic tank 31 is circulated by the pump 33 between the sludge culture tank 32, and in particular, the microorganisms which are useful by the action of the filling material in the sludge culture tank 32 are propagated. 12 to 48 hours is good.

The sludge culture tank 32 is made by filling the filler 34 therein, and the diffuser 35 is installed below the filler 34. The sludge containing a large amount of useful microorganisms in the sludge culture tank 32 is sent to the receiving container 21, the reaction tank 29, and the storage tank 26.

On the other hand, the solids in the receiving container 21 and the storage tank 26 are conveyed to the stirring part 36 which is the first accommodating part of a solids processing system, and mixing and stirring are performed. The agitator 36 is conveyed and mixed with sludge containing a large amount of useful microorganisms in the sludge culture tank 32. In addition, a soil molded body mainly composed of a corrosive substance or a pumice containing the molded body and an elutable silica component may be added and mixed. Subsequently, after the upside down is performed in the rotation converter 37, the solids are finally composted.

Further, from the water tank 38 provided in close proximity to the livestock facility, the eluate of the filler composed of at least a soil compact mainly composed of corrosive substances or pumice containing the compact and the elutable silica component is transferred to the pig house 20. It is also preferable to supply. In addition, the concentrate tank 39 is provided separately from the water tank 38, and is a water tank as an eluate of a filler formed of at least a soil compact mainly composed of a corrosive or a pumice containing the compact and an elutable silica component. It is also preferable to supply pigs with more concentrated water than the eluate of (38). Concentration more than the eluate of the water tank 38 can be achieved by lengthening the contact time between the filler in the concentrate tank 39 and water, or by increasing the amount of the filler in the concentrate tank 39.

The compost obtained by this invention can be used as a mixed fertilizer and a soil improvement material.

Claims (9)

A stepping material is formed by mixing a fermentation compost fermented to the bottom of a livestock raising facility with livestock raising to form a stepping ground, and at least the soil molded body or the molded body mainly containing a corrosive substance on the stepping floor. A livestock facility characterized in that the eluate of a filler composed of pumice containing an elutable silica component is sprayed and the manure excreted by the livestock is taken in, and the manure is fermented by the fertilizer and the compost is composted. How to treat sewage. The livestock facility according to claim 1, wherein a water tank filled with the filler is provided in or near the livestock raising facility, and the eluate of the filler is taken out by supplying water into the water tank. How to treat sewage. The method for treating wastewater in a livestock facility according to claim 1, wherein the eluate of the filler taken from the water tank is used as drinking water for livestock. The method according to claim 1, 2 or 3, wherein the fertilizer is fertilized by manure with the above-mentioned material, and at least one kind of pumice containing soil granules mainly composed of corrosive substances, shaped bodies thereof or eluting silica components. The method of treating wastes in a livestock facility, characterized by adding and mixing. The manure generated from the livestock raising facility receives livestock into the receiving container, and separates it into solids and wastewater using solid / liquid separation means from the collecting container, and transfers the solids to the solids processing system. At the same time, the wastewater is transferred to a wastewater treatment system, which includes a storage tank for receiving wastewater, a reaction tank for treating the wastewater by useful microorganisms, a sedimentation tank, and a soil compact or at least a caustic body and eluted silica at least within the interior of the wastewater. A sludge cultivation tank is formed by filling a filler composed of pumice containing a component. In this sludge cultivation tank, a useful microorganism having functions such as decomposition and resourceization corresponding to an organic substance or odor component is multiplied, and this useful Directly or indirectly collect microorganisms, reservoirs, or reservoirs in the wastewater treatment system. Polluted water treatment method in accordance with the first receiving portion of Livestock of the water treatment system, characterized in that for conveying (返 送. 6. The method of treating wastewater in a livestock facility according to claim 5, wherein after mixing with the microorganisms useful in the first accommodating part of the solids treatment system, the composition is composted by stirring and overturning. The soil treatment in the livestock facility according to claim 6, wherein at the time of composting, at least one kind of soil powder mainly composed of corrosive material, molded product thereof or pumice containing elutable silica component is added and mixed. Way. The water tank according to claim 5, wherein a water tank filled with a filler formed of at least a soil compact mainly composed of a corrosive or a pumice containing the compact and an elutable silica component is provided inside or near the livestock facility. A method for treating wastewater in a livestock facility, wherein water is supplied into the water tank to extract the filler and use it as drinking water for livestock. 9. The soil compact according to claim 5, 6, 7, or 8, which is composed of at least a soil compact mainly containing a corrosive or a pumice containing the compact and an eluting silica component. A contaminant treatment method in a livestock facility, comprising providing a concentrate tank filled with a filler and spraying the concentrated eluate in the tank on the bottom of the livestock facility.