KR20030068100A - pre-treatment method and the device for livestock's sewage and excrements, sewage and sludge of sewage disposal tank - Google Patents

Abstract

PURPOSE: Provided are an advanced pretreatment method and an advanced pretreatment apparatus for livestock wastewater, night soils and sludge of sewage disposal tank, the method and apparatus being capable of responding to sharp load fluctuation of wastewater to be treated, preventing settlings deposit in a pretreatment tank, and decreasing organic material concentration of the pretreated wastewater, thereby preventing overloaded wastewater inflow to main wastewater treatment process. CONSTITUTION: The method comprises the steps of removing coarse deleterious particles from wastewater using a coarse screen; introducing deleterious particle separated wastewater to a vertical decanter centrifugal machine (S1) for removing fine deleterious particles such as inorganic solids and sand that can not be used as food of microorganism; introducing the wastewater from the centrifugal machine to a high speed reactor through a storage tank for decomposing organic material at high speed; completely separating fine deleterious particles and sludge by a solid-liquid separation process using a horizontal centrifugal machine (S2); and aerating the separated liquid in short time, wherein chemicals can be used during the fourth step.

Description

Pre-treatment method and the device for livestock's sewage and excrements, sewage and sludge of sewage disposal tank}

The present invention wastewater. In the pretreatment process of wastewater treatment plant, such as manure and septic tank sludge, relates to a high pretreatment method and apparatus therefor,

More specifically, the inlet and the crude sewage treatment unit are connected to the pre-treatment dong inlet of the wastewater treatment plant, and the microorganisms are continuously fed into the vertical decanter centrifuge in the first stage of the fine contaminant treatment by interlocking the contaminant separation solution. Precipitates, such as solids and sand, are processed in one step in the process of contaminants, and then flowed into a high-speed reactor through a storage tank to decompose organic matter at high speed. It is composed of two step process of completely solid-liquid separation of fine contaminants and sludge, and three stages of separation of solid-liquid separated liquid through short-term aeration tank process. The present invention relates to a high pretreatment method and apparatus for pretreatment.

The removal of contaminants contained in conventional manure and septic tank sludge, livestock wastewater, sewage, etc. is applied to the press to remove coarse contaminants by applying various screens when entering from the inlet, and the filtrate containing fine solids is stored. After being put in the tank for a while, the pump was put into the cyclone, and the pump was pressed against the inner wall of the cylinder to fall below the cone. In this case, less than 10% of the solids had a high water content and was put back into the horizontal centrifuge. Dehydration treatment and 90% of the input amount is increased to the collection reservoir, as the filtrate does not settle down to the center of the cyclone, and does not settle down; A pretreatment step of inserting the coarse contaminant remover in the first step to remove the coarse contaminant and collecting the filtrate in the underground storage tank with a chute and feeding it into the large horizontal centrifuge of the washing machine; Under the coarse debris remover, a certain size tank is used as an inclined bottom, and a screw conveyor is inserted therein to remove only large sand.

The conventional method for removing contaminants does not cope with sudden loads that are sequentially introduced, and does not decompose and separate the waste ends and organic matters in which sediments and floating suspended matters accumulate in the pretreatment process tank. Inflow of sewage, which results in an increase in the total load, has resulted in many problems such as sewage treatment after pretreatment.

The present invention provides a one-step process for smoothly treating the wastewater treatment flow by removing the sediment and the suspended solids floating in the upper part of the sedimentation tank can not be fed to the microorganisms in order to solve the above problems in the contaminant treatment process;

After condensing the sludge by putting fine particle sludge and high concentration organic matter into the high-speed reactor, it improves the quality of the separation liquid by feeding the chemicals from the feed pipe leading line to the chemical injector according to the characteristics of the treatment and the water quality conditions in the horizontal centrifuge. A two step process;

The separated liquid collected in the separated liquid storage tank is introduced into the aeration tank with a transfer pump to be overflowed from the aeration tank configured in stages, and a return pump is installed in the terminal aeration tank to return activated sludge to the end of the aeration tank in a quantitative manner to control the microbial active load. Continuous supply of a certain amount of air to the lower part to activate the sludge to decompose the residual organic matter and then flow it into the settling tank, and the supernatant is transferred to the flow control tank of the associated treatment process, and the settling sludge is transferred to the concentrated liquid distribution tank for final treatment. In the first step of batch processing the contaminants through the process, the wastewater from which the particle solids are separated first is introduced into the high-speed reactor, and the organic matter is decomposed. Wastewater manure and septic tanks to be transferred to linked processes Needle aims to provide a high level of pre-treatment apparatus and method.

1 is an exemplary view showing the overall process of the present invention

2 is a main configuration diagram of a one-step device in the process of the present invention

3 is a plan view of FIG.

4 is an enlarged view of main parts of the screen rotor and the scraper rotor of the first stage apparatus of the present invention;

5 is a main configuration diagram of a two-stage device in the process of the present invention

6 is a process block diagram of the present invention.

* Explanation of symbols for main parts of the drawings

1: Input coupling 2: Screen rotor

3: frame 4,6: upper and lower casing

7: scraper rotor 8: screw press

9: reduction motor 10: feed pump

12: Outer Dongbool 13: Innerdong Screw

15: outer casing 16: solid discharge outlet

19: high speed reactor 20: contact mixing induction plate

21: guide nozzle 22: exhaust gas pipe

26: cone cone 28: cone screw

29: feed pipe S: centrifuge

Hereinafter, the configuration and the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary view showing the whole process of the present invention and Figure 2 is a view of a decanter centrifuge which is a step 1 in the process of the present invention installed vertically,

Figure 4 shows the relationship between the horizontal centrifuge and the high-speed reactor in two steps in the process of the present invention.

As shown in Fig. 1 to Fig. 2, the input coupling (1) protruding out of the pre-processing machine room and the operation detection switch is attached to the upper part of the predetermined distance, and the disc ring having a predetermined width and thickness by interlocking at intervals at the inlet end. Is fixed with bolts through several bolt holes in the circumference, and both sides of the screen rota (2), which have formed a plurality of groove jaws that are kept at regular intervals outside the circumference, are assembled to the bearing block with bearings and oil seals from the top of the frame (3). Mounted rotatably, the upper casing (4) of the upper and lower casing is provided with a deodorization collecting pipe (5), the lower casing (6) is provided with a filtrate collecting chute and discharge pipe, one side of the screen rotor (2) On the other outer circumference of the distribution tank, a scraper rotor (7) ring plate is inserted between the screens to maintain the inclination angle, and the rotation of the screen rotor (2) and the scraper rotor (7) is rotated differently. Nine other end frame 3 is secured seated on top of primarily applying a rotation to the scraper Rota 7 in the chain and each of the sprockets and scraper transmits the rotation to the Rotary Screen Teller (2) through rotation of (7), and

A screw press 8 is mounted below the opposite diagonal where the scraper rotor 7 and the screen rotor 2 are engaged to be connected to a collecting chute casing, a perforated cylinder, a pressurized screw, and a dewatering contaminant discharge chute, and a perforated cylinder inside the casing. It is fixedly mounted at intervals, and the pressure screw is inserted in the inner circumference of the perforated cylinder while maintaining a certain interval so that one shaft is covered with the bearing and oil seal of one side flange of the cylinder and the bearing block, and rotates on the screw press reduction motor (9) with a sprocket and chain. Connect it,

The inlet of the feed pump 10 is connected to the screen rotary rotor 2 and the filtrate discharge pipe flange of the lower collecting reservoir of the casing, and the discharge side is connected to the vertical decanter centrifuge (S1) feed pipe and the flexible joint,

The vertical decanter centrifuge (S1) for separating and dehydrating the fine contaminants contained in the filtrate is seated on the lower side of the main body frame (3) with respective bearing cases (11) on the large shaft and the other side, and each bearing Assembling the large diameter axis and the small diameter axis of the outer movable bowl 12, the inner movable bowl 12, the inner movable screw 13 of the same shape as the outer movable bowl 12 at intervals with the inner surface of the bowl, It is assembled with bearing in the center hole of the shaft and rotates with a slight deceleration difference on the same rotation as the ball rotation.

A gear box 14 is mounted at the end of the large diameter shaft to form a deceleration rotation difference between the outer drive 12 and the inner screw 13, and a drive pulley is mounted at the end of the small diameter shaft to drive an electric motor on one side of the horizontal surface of the driving pulley. At the same time, the input pipe is fixed to the frame 3 at a distance from the inner surface of the small diameter shaft hole to the lower end of the inner hole of the inner hole screw 13 so as to disperse and discharge the input to the feed pump. Then, the outer casing (12) outside the outer casing (15) is mounted on the frame (3), and on one side of the small diameter shaft, the solids discharge chute for collecting and draining the dehydrated solids discharged from the solids discharge port (16) To the scraper while installing a discharge conveyor (17) at the bottom, and the separation solution is installed in the large-diameter collecting casing by separating the separation liquid discharge shoe unit for collecting and discharging the separation liquid Flow so as to connect the flange and the pipe to be Ke stored on a first storage tank 18, an upper manhole.

Meanwhile, the high-speed reactor 19 for introducing the first stage treatment liquid stored in the first storage tank 18 into the reactor input pump is cylindrical and has a cone portion at the lower side thereof, and a contact mixing induction plate having a predetermined interval on the top side of the cone portion ( 20) Install several pieces and mount dozens of guide nozzles 21 consisting of pipes of a certain diameter on the surface of the contact mixing guide plate 20 so as to maximize the mixing efficiency of the air and the treated material under the guide plate. The upper side of the high-speed reactor (19), the upper lid is equipped with a discharge gas pipe 22 having a pressure valve is connected to the deodorizer (23) and the bypass pipe 24 on one side of the upper layer circulation pump Mounted by the inlet pipe and the jacket to form a circulating pump inlet pipe at a certain distance from the top of the high-speed reactor 19, the bypass pipe 24 is disposed at a certain distance above the inlet pipe, the circulation The discharge pipe of the pump is placed in the middle of the cone section of the high speed reactor 19 so that the input is circulated internally and the air supply pipe is introduced into the brower 25 at the tip of the cone section to continuously supply a certain amount of air. Set the water input line to continuously input a certain amount by the 1 reservoir tank level sensor and simultaneously operate the horizontal centrifuge (S2).

In addition, the processing material flowing into the bypass pipe set on one side of the upper side of the high-speed reactor (19) flows into the horizontal centrifuge feed pipe, and the horizontal centrifuge (S2) has one large cone 26 at both sides. And small diameter shaft, but the variable speed gearbox 30 is assembled at the shaft end of the large diameter shaft mounted on the bearing block and the fixed frame, and the driving pulley is fixedly mounted at the end of the small shaft shaft, and the feed pipe (29) ) In a state of communicating with the main shaft center hole of the conical screw 28 at intervals from one side to the input dispensing dispensing sphere, fixed and assembled to the fixed frame, the drum is a circular sink and a conical dehydration part The central bore 26 and the central cone 26 have conical screws 28 having the same shape as bearings on both shafts, respectively.Assembled on the outer circumferential surface, dozens of plates on the outer circumference of the shaft circumferentially from one side of the large diameter axis horizontally in the longitudinal direction to the one side of the dispensing dispensing sphere at regular intervals. It extends to the rear end of the discharge port, and also has several separation liquid discharge control dam flanges on the side of the large diameter shaft, and a plurality of discharge holes for discharging the separated and dehydrated solids are installed at one circumference of the tip of the small diameter shaft assembly cone 26. The outer casing (26) is provided with an outer casing (15) for collecting and discharging each of the separated liquid and solids on the discharge side, and automatically conical in accordance with the drive motor and the processed material to drive the cone bowl (26). Screw 28 The vehicle speed motor for varying the vehicle speed rotation of the conveyor is mounted on the upper surface of each fixed frame.

On the other hand, when the processed material is introduced into the horizontal centrifuge (S2) feed pipe 29, centrifugal force is applied to the processed material by thousands of times of gravity, and the solid material is separated into the solid and the supernatant water so that the solid is discharged to the solid discharge port side according to the action of the cone screw 28. While transporting, dehydration is carried out and discharged continuously to the discharge port. The lower conveyor 31 collects and processes the cake storage hopper 32, and the separated supernatant is discharged to the large diameter dam flange hole and collected by the outer casing 15 separation liquid collection chute. To flow into one of the aeration tanks in the next process.

In addition, in order to further increase the separation effect in the horizontal centrifuge (S2), a certain amount of chemical water is injected through the chemical input device 24 in one line of the tip of the feed pipe 29, and the separation liquid introduced into the flow rate adjusting tank. The silver flows into the aeration tank and supplies air to the brower 33 at the lower part of the aeration tank, and activates it as a pretreatment final process, passes through the precipitation tank, and transfers it to the next process or sewage treatment plant.

The present invention as described above provides the pretreatment process of the wastewater treatment plant, such as wastewater, manure and septic tank sludge so that the fines and liquids are drained down by the rotating screen rota hole when the truck is connected to the input coupling by the hose The coarse contaminants are dropped into the screw press inlet installed by the scraper ring at the same time and dewatered and discharged to the hopper through the export conveyor. The collected filtrate is discharged into the decant centrifuge inlet pipe vertically through the line pump. The solids and water are separated by the centrifugal force from the inner surface of the outer bowl, and the separated liquid is discharged through the Olympus Hurenji hole to be discharged into the separating liquid collecting chute under the outer casing, and the solid is guided by the inner copper screw. Centrifugal consolidation force at inclination angle Dehydration occurs and discharged continuously to the cake discharge port and collected through the outer casing upper side cake collection chute to the hopper or the collecting container to the conveying screw conveyor, and the separation liquid is introduced into the high-speed reactor by a pump through a storage tank in a chute. It is disassembled and put into a horizontal centrifuge as a communication line to completely solidify fine contaminants and sludges and to separate the solids separated through a short-term aeration tank process, which is always effective in maintaining a comfortable pretreatment facility. It is effective to pretreat solely pretreatment or sewage-linked water load with minimum water quality while controlling the water automatically.

Claims (2)

Unsaturated solids that cannot be fed to microorganisms by connecting the inlet and the crude sewage treatment unit at the start of the pretreatment ward of the wastewater treatment plant and continuously feeding them to the vertical decanter centrifuge (S1) in the first stage of fine contaminant treatment by linking the contaminant separation solution. Sediment such as sand and sand are processed in one step in the process of contaminants, and then flowed into a high-speed reactor by a pump through a storage tank to decompose organic matter at high speed, and to a communication line in a horizontal centrifuge (S2) (pretreatment water treatment conditions). In this case, two-stage process for completely solid-liquid separation of fine contaminants and sludge and three-stage separation of solid-liquid separated liquid are transferred to a single pretreatment or sewage treatment plant. Livestock wastewater, manure and septic tank sludge, pretreatment of wastewater with minimum water quality Li method. Both sides of the screen rota 2 having a plurality of grooved jaws maintained at a predetermined interval out of the circumference are assembled to the bearing block with bearings and oil seals so as to be rotatably mounted on the top of the frame 3, and the upper casings of the upper and lower casings (4). ) Is provided with a deodorizing collecting pipe (5), the lower casing (6) is provided with a filtrate collecting chute and discharge pipe, the screen rotor (2) on one side of the distribution tank on the other outer circumference of the scraper rotor (7) ring plate Insert it in between to maintain the inclination angle, The screw press 8 is mounted below the opposite diagonal where the scraper rotor 7 and the screen rotor 2 are engaged, and a perforated cylinder is fixedly spaced inside the casing, and a pressurized screw is inserted into the perforated cylinder. This cylinder is covered with one side flange and bearing of bearing block and oil seal, and sprocket and chain are connected to the screw press reduction motor (9). The screen rotor (2) is connected to the feed pump (10) inlet to the filtrate discharge pipe flange of the lower collecting reservoir of the casing, the discharge side is connected to the vertical decanter centrifuge (S1) feed pipe and the flexible joint, but the vertical decanter centrifuge (S1) is seated on the lower side of the main body frame (3) with a large diameter shaft and the other bearing case 11 on the other side of the upper side, and each bearing is assembled with a large diameter shaft and a small diameter shaft of the outer bowl (12), and Inside the ball 12, the inner screw 12 having the same shape as the outer bowl 12 is assembled with a bearing in the center hole of the large and small shafts, while being spaced apart from the inner surface of the bowl. The outer bowl 12 is equipped with a solid discharge chute to the scraper while installing a discharge conveyor 17 at the bottom to store through the upper manhole of the first storage tank 18, 1 stored in the first storage tank 18. The high-speed reactor 19 into which the step treatment liquid is introduced into the reactor input pump is cylindrical and has a cone portion at the lower side thereof, and a plurality of contact mixing induction plates 20 are provided at predetermined intervals above the tip of the cone portion, respectively, and the contact mixing induction plate is provided. On the (20) surface, dozens of guide nozzles 21 having a predetermined diameter pipe are mounted to protrude downwards, and the upper portion of the high speed reactor 19 is equipped with an exhaust gas pipe 22 having a pressure valve on the upper side of the deodorizer. (23), the air supply pipe is introduced into the brower (25) at the tip of the cone part, and a one-process treatment input line is set at the top of the air supply pipe, and a constant amount is continuously inputted by the one reservoir tank level sensor and the horizontal centrifugal Operate the separator (S2) by interlocking, the processing material flowing into the bypass pipe set on one side of the upper side of the high-speed reactor (19) flows into the horizontal centrifuge feed pipe, one horizontal centrifuge (S2) Conical ball (26) of both sides are assembled with a large diameter and a small diameter shaft, the variable speed gear box 30 and the drive pulley fixed to the shaft end of the large diameter shaft mounted on the bearing block and the fixed frame, and the small shaft shaft end Mounted, the drum is a cone cone 26 and a cone cone 26 is formed in the horizontal settled portion and the conical dehydration portion, the conical screw 28 of the same shape in each of the cone cone bearing (26) ) Assembled on the outer circumferential surface of the large and small diameter shafts 27, 27a of the support shaft, and supplied to the lower part of the aeration tank by supplying air to the brower 33, and activated by the final process of pretreatment. Conveying Axis effluent. Manure and sludge tank high end processor, characterized in that the connection process.