KR100469965B1 - Method and device for treating wastewater of livestock and septic tank - Google Patents

Abstract

In the present invention, the livestock wastewater and the septic tank wastewater are subjected to selective stages 3 and 4 after the first and second stages, and the filtrate is subjected to the wastewater treatment process by separating the contaminants, sand, fine seeds, and the final solid-liquid centrifugally up to five stages. It is an object of the present invention to provide a pretreatment method and apparatus for livestock wastewater and septic tank wastewater that can be contributed to water quality purification by allowing the sludge to be introduced and dewatered to be fertilized.

That is, the present invention provides an apparatus and method for pretreatment of various wastewaters (such as livestock wastewater or septic tank wastewater) before the wastewater treatment process 21, which filters the contaminants in the wastewater introduced through the input pipe 1. To install the contaminant screen (2) and the contaminant dehydrator (3) for dewatering the contaminant to discharge the contaminant to the conveying conveyor (20), installed through the flow pipe (5) below the contaminant screen (2) The sand separator 6 and the sand outlet 23 of the sand separator 6 are installed to discharge the gravel and sand into the conveying conveyor 20, and the filtrate discharged from the sand separator 6 flows in. The flow rate adjusting tank 17 and the flow rate adjusting tank 17 are provided with an overflow pipe 16 for discharging the introduced filtrate to the filtrate collecting tank 19 when it overflows, and the flow rate adjusting tank 17 has a flow path tube ( 22) fine seed screen (7) installed on the top ) And pumped transfer of the filtrate by the pump 27, the filtrate discharged from the fine seed screen (7) by branching the bypass pipe (8) in the middle of the flow pipe (22) In contact with the branch pipe (9), the flow path pipe 22, the bypass pipe (8), the branch pipe (9) are provided with valves (30, 28, 29), respectively, so as to interrupt the supply direction of the filtrate. On one side of the fine seed screen (7), a fine seed dehydrator (13) is speeched to dehydrate the filtered seeds and fibers to be discharged onto the conveying conveyor (20), the branch pipe (9) is the filtrate feed fraction Branching the engine (9a) and connected to the solid-liquid centrifuge (10), the sludge dewatered from the solid-liquid centrifuge (10) to be discharged to the conveying conveyor (20) through the dehydration cake conveying conveyor (12), The filtrate dehydrated in the centrifuge (10) is a wastewater treatment process (21) through the filtrate outlet pipe (11) So it can leak. At the end of the conveying conveyor 20, a separation device 25 capable of separating filtered contaminants, fine seeds, and dewatering sludge into waste and fertilizers is installed, and according to the present invention, various wastewaters are adapted to the conditions. Selective input at each stage allows efficient pretreatment so that the filtrate can be fed to the wastewater treatment process, the separated contaminants can be disposed of, and the seeds can be fertilized. It is possible to greatly reduce the space occupancy rate for the installation of the device and to recycle waste resources by providing a pretreatment device that can simultaneously pretreat the five-step process in one gas. .

Description

Method and device for treating wastewater of livestock and septic tank

The present invention relates to a pre-treatment method and apparatus for livestock wastewater and septic tank wastewater, and more particularly, to the livestock wastewater and septic tank wastewater through steps 1 and 2, optionally through 3, 4 steps to contaminants up to 5 steps in sequence. Pretreatment method and apparatus for livestock wastewater and septic tank wastewater, which contributes to water quality purification by putting the filtrate into the wastewater treatment process by separating the sand, fine seeds, and the final solid-liquid centrifuge, and allowing the dewatered sludge to be fertilized. To provide.

Conventional methods for pre-treatment of livestock wastewater and septic tank wastewater are to remove only contaminants based on a collection truck and to perform sludge treatment only using a fixed tank or to remove sand and suspended matter using a solid-liquid centrifuge and to flow into a storage tank to lead to the next process. It would have been.

In the pretreatment method, gravel, sand, earth and sand, which were not screened when the livestock wastewater with high initial concentration was collected at farms or farms and with the septic tank wastewater collected at home, were physically and chemically processed in the following process. In addition, Korean Patent No. 212298 separates contaminants and filtrates in wastewater from 1,2,3 times from wastewater inflow where wastewater flows. By installing and treating the dewatering treatment device and the reservoir storing the filtrate from the treatment process in one device, the wastewater purification can improve the treatment efficiency of the wastewater while greatly reducing the size of the wastewater purification treatment device. Although a treatment device has been disclosed, this means that the manure truck is connected to a hose holder. When it enters, the wood, bottle, vinyl, etc. are blocked in the U part of the inflow pipe, and the height adjustment function of the flow control tank loses its specific gravity difference depending on the wrong manure quality. When it flows into the primary filtrate storage tank, sand or less of 8mm is deposited and pumping pump is blocked, and when the sediment flows into the sedimentation tank, the sediment is separated by cyclone phenomenon and the heavy sediment is accumulated in the filtrate discharge part. As the pipe is blocked from the part connected to the inlet and the centrifugal dehydrator, the centrifugal dehydrator becomes idle, and the treatment function is reduced. If the screw dehydrator overflows the top, the function is completely lost, and the bar of the primary filtrate reservoir The floor is horizontal and needs cleaning every 3 ~ 4 days. If not, sediment sand, etc., reduces the flow rate and flow rate of the pump and overflows into the bypass pipe so that the manure is discharged to the discharge part. The sedimentation tank, secondary screen, centrifugal dehydrator, etc. were lost and had many problems.

Accordingly, the present invention provides a pretreatment method and apparatus for livestock wastewater and septic tank wastewater which can eliminate all the problems in the pretreatment method and apparatus for livestock wastewater and septic tank wastewater as described above. As,

In the present invention, in particular, the livestock wastewater and septic tank wastewater are sequentially passed through stages 1 to 4 so that more efficient contaminants, sand, fine seeds, and final solid-liquid centrifugation can be achieved in the pretreatment stage, thereby reducing the cost of the apparatus. We want to promote efficient use of

1 is a block diagram illustrating a pretreatment method showing a preferred embodiment of the present invention.

Figure 2 is a cross-sectional configuration view showing a pretreatment apparatus showing a preferred embodiment of the present invention

Figure 3 is a plan view showing a pretreatment apparatus showing a preferred embodiment of the present invention

Figure 4 is a side cross-sectional view showing a pretreatment apparatus showing a preferred embodiment of the present invention

■ Explanation of symbols used in main part of drawing ■

1: input tube 2: scavenger screen

3: chief dehydrator 4: chief chute

5: Euro line 6: Sand separator

7: Fine seed screen 8: Bypass building

9: branch pipe 9a: filtrate supply branch pipe

10: solid centrifuge 11: filtrate outflow tube

12: Dehydration Cake Transfer Conveyor 13: Fine Seed Extractor

14: dehydration residue chute 15: contaminant dehydration pipe

16: Overflow Tube 17: Flow Adjustment Tank

18: Seed Extraction Pipe 19: Filtrate Collection

20: conveying conveyor 21: wastewater treatment process

22: Euro pipe 23: Sand outlet

24: Screen 25: Separator

26: pump motor 27: pump

28, 29, 30: valve

1 is a block diagram illustrating a pretreatment method of a livestock wastewater and a septic tank wastewater provided by the present invention, and looks at the pretreatment method of the livestock wastewater and a septic tank wastewater through the present invention;

In the present invention, the livestock wastewater and septic tank wastewater (hereinafter abbreviated as "wastewater") are separated from various impurities, sand, fine seeds, solids through 1 to 5 stages, and the selected sludge is fertilized with a water content of about 75%. You can do this by breaking it down into stages;

Step 1: process the sediment separation

Step 2: sand separation process

Step 3: fine seed separation process

Step 4: solid-liquid separation process

Step 5: The wastewater pretreatment device and method are configured to be separated.

Hereinafter, the present invention will be described in detail with the pretreatment apparatus.

Wastewater introduced through the input pipe 1 of the pretreatment apparatus as shown in FIGS. 2 to 4 is first introduced into the screen of the contaminant screen 2 for the first step contaminant separation process, and the contaminants having a predetermined size are first filtered. Dehydration in the dehydrator (3) to be discharged to the conveying conveyor (20) through the miscellaneous chute (4),

The filtrate separated from the first stage contaminant screen (2) is introduced into the sand separator (6) in two stages through the passage pipe (5) to select and discharge gravel, sand, earth and sand with a large specific gravity.

The filtrate separated in the sand separator (6) is introduced into the fine seed screen (7) in three stages to separate the fibers, suspended matter, seeds and the like from the fine seed dehydrator (13) through the dehydration residue chute 14 conveying conveyor ( 20).

And the filtrate that passed through the fine seed screen (7) is discharged to the conveying conveyor (20) through a dehydration cake conveying conveyor (12) to separate the fine residue concentration in four stages, that is, the solid-liquid centrifuge (10), The filtrate is to be connected to the general wastewater treatment process 21 through the filtrate outflow pipe (11).

And the sludge conveyed to the conveying conveyor 20 in each separation process is put into the separation device 25 constituting the final five-stage separation process is to separate the contaminants, and to seed, sand and fertilizer.

The pretreatment apparatus of this invention is demonstrated more concretely.

The contaminant screen (2) for the first stage treatment is generally a device capable of filtering contaminants in the wastewater, and is widely used in a waste water purification device, etc., and the contaminants filtered through the contaminant screen (2) are one side thereof. It is installed to feed into the debris dehydrator (3) installed to the lower side.

In addition, the filtrate from which the contaminants are filtered out of the contaminant screen (2) is configured to fall on the sand separator (6) installed at the lower portion through the flow path tube (5) to undergo a two-step wastewater treatment process.

Sand in the wastewater is installed to be discharged through the upper sand outlet 23 through the screw installed in the inclined shape constituting the sand separator 6, the sand discharged from the sand outlet 23 is conveying conveyor (20) Dropped on the)) was also configured to be transferred to the separation device 25 of the five-step separation process.

The filtrate separated from the sand separator 6 is transferred to the flow rate storage tank 17 installed on one side of the lower part of the pretreatment apparatus through the flow path tube 22.

An overflow pipe 16 is installed in the flow rate storage tank 17 so that the filtrate introduced on the flow rate storage tank 17 flows onto the filtrate collection tank 19 installed on the side thereof, and immediately flows into the wastewater. It may be introduced into the treatment process (21).

Pump 27 and a flow path tube driven by the pump motor 26 to flow into the fine seed separation process and solid-liquid separation process that can selectively process the filtrate introduced into the flow storage tank (17) (22) to allow the filtrate to be introduced into the upper fine seed screen (7), the middle of the flow pipe (22) branched to the bypass pipe (8) and the lower portion of the fine seed screen (7) It is configured to be connected to the branch pipe (9) that is connected to the pipe, and the filtrate supply branch pipe (9a) that can supply the filtrate onto the solid-liquid centrifuge (10) in the middle of the branch pipe (9) 3) the fine seed separation process and the solid-liquid centrifuge (10) by a three-stage microseed screen (7) by opening and closing the valves (28,29) and the valve (30) installed in the flow path pipe (22) before and after. It is possible to selectively perform the solid-liquid separation process.

In the fine seed screen (7) as a device for filtering fine seeds, etc. in the filtrate via the first and second stages, the filtered fine seeds and the like are transferred to the side of the fine seed dehydrator (13) installed on the side, and the dehydration residue chute (14). The dewatered filtrate during the dehydration process on the dehydration residue chute 14 is designed to flow into the filtrate collection tank 19 through the seed dehydration filtrate 18. .

And the fine seed filtered filtrate in the fine seed screen (7) is configured to be introduced onto the solid-liquid centrifuge (10) through the lower branch pipe (9) and the filtrate supply branch (9a), the solid-liquid centrifuge ( On one side of 10), a dewatering cake conveying conveyor 12 is installed so that the dewatering cake separated in the solid-liquid centrifugation process can fall onto the conveying conveyor 20.

In addition, the pre-treated filtrate separated on the solid-liquid centrifuge (10) is finally discharged to the wastewater treatment process 21 through the filtrate outflow pipe (11) to flow into the wastewater treatment plant to purify the water quality by the known wastewater treatment process. It is configured to be.

In the figure, reference numeral M denotes a motor, and B denotes a cleaning brush.

The method for pretreating various wastewaters by the wastewater pretreatment apparatus of the present invention which can be configured as described above is largely classified into three types.

That is, the method of pretreatment of wastewater in the stage 1 stage 2 stage 5 stage,

Pre-treatment of wastewater in stage 1 stage 2 stage 4 stage 5,

Step 1 → Step 2 → Step 3 → Step 4 → Step 5 can be divided into pretreatment methods.

First, steps 1, 2 and 5 are essential processes for wastewater pretreatment in the present invention.

As described above, the first step is a process for separating the contaminants, and the wastewater introduced through the input pipe 1 to the contaminant screen 2 of the pretreatment apparatus is filtered through the input screen 1 of the contaminant, and then the debris dehydrator 3 After being transported to and dehydrated, it is discharged to the conveying conveyor 20 through the miscellaneous chute 4.

At this time, the filtrate dehydrated in the contaminant dehydrator (3) is introduced into the filtrate collection tank (19) through the contaminant dehydration filtrate (15) and then transferred to the sewage treatment process (21), the filtrate separated from the contaminant screen (2) The silver flow pipe (5) is introduced into the sand separator 6, which is a two-step process, to separate and separate gravel, sand, earth and sand having a large specific gravity, and the separated sand is conveyed through a sand outlet 23. It is discharged to the (20) phase and is introduced into the separation process of five stages to be sorted with a contaminant and a fertilizer component in the separation device (25).

In the essential process of pretreatment of the wastewater through the first stage → 2 → 5 stages, the present invention selectively passes through three stages, or selectively passes through three and four stages at the same time to isolate and separate various fine seeds in the wastewater. It can also be separated,

Here, steps 1,2 and 5 go through the same treatment process as before, and in order to pre-treat the waste filtrate in steps 3 and 4, the following operations are performed.

That is, the valve 30 on the flow pipe 22 and the valve on the branch pipe 9 piped on the flow storage tank 17 into which the filtrates passed through the first and second stages are introduced so that the wastewater filtrate is introduced into steps 3 and 4. When the valve 29 is opened and the valve 28 on the bypass pipe 8 branched from the flow path pipe 22 is locked, the pump 27 is driven by driving the pump motor 26 so that the flow rate adjusting tank ( 17) The filtrate of the phase is supplied to the fine seed screen (7) through the flow path tube 22 to separate the fibres, suspended matter, seeds in the filtrate through the dehydration residue chute (14) in the conveying conveyor 14 20, the filtrate passing through the fine seed screen (7) is introduced into the solid-liquid centrifuge (10) through the branch pipe (9) and the filtrate supply branch pipe (9a) to separate the fine debris concentration to dehydrate Dehydration and discharge to the conveying conveyor 20 through the cake conveying conveyor (12), the filtrate is the filtrate outflow pipe (11) After being fed into the filtrate collection tank (19) through the wastewater treatment process is supplied to the general wastewater treatment process (21).

In the above process, when the filtrate is directly injected into the fourth stage without passing through the fine seed screen 7, which is a three-step process, the valve 30 on the flow passage 22 and the valve 29 on the branch pipe 9 are provided. Is locked, and when the valve 28 on the bypass pipe 8 is opened, the filtrate supplied by the driving of the pump 27 passes through the bypass pipe 8 from the flow path pipe 22. It is put into the solid-liquid centrifuge 10 while passing through the engine 9a and undergoes a treatment process such as electricity.

The present invention selectively separates various contaminants, sand, fine seeds, etc. in the wastewater through various staged treatment as described above, and goes through the solid-liquid separation process to efficiently purify various wastewater through the wastewater treatment process and the contaminant and fertilizer separation process. I can do it,

According to the experiment through the wastewater pretreatment apparatus provided in the present invention, the efficiency of removing various wastes in the wastewater is about 15% by removing the contaminants and the like contained in the wastewater in the first stage, and by removing sand and the like in the second stage. %, In step 3 to remove the fine seed, etc., about 15%, in the fourth step to obtain a centrifugal removal efficiency of about 15% by centrifugation of the solid-liquid, finally using the wastewater pretreatment method and pretreatment device of the present invention The concentration of various residues in the waste water by about% can be greatly reduced.

And it is preferable that the selection of each step is to take the process from step 1 step 2 step 4 step 5 step when the concentration of wastewater introduced in the initial stage is low,

When maintenance or repair of the pretreatment device is selected, the process from step 1 to step 2 to step 5 can be used effectively.

In addition, it is also one of the characteristics of the present invention to have a discharge port for each device to increase the effect by the water treatment according to the properties of the material, and to take a small transport area by inducing one transport process to minimize the area of each device.

As described in detail above, according to the pre-treatment method and pretreatment apparatus for livestock wastewater and septic tank wastewater provided in the present invention, various wastewaters are selectively input to each step according to the conditions to efficiently pre-treat the filtrate and feed the wastewater to the wastewater treatment process. The wastes can be disposed of, and the debris can be disposed of, and the seeds can be fertilized.The pretreatment can reduce the operating cost due to the selective step-by-step treatment of the pretreatment, and can simultaneously pretreat the 5-step process in one gas. The provision of the device can greatly reduce the space occupancy for the installation of the device, and the expected effect is unexpectedly great, such as recycling the waste resources.

Claims (4)

delete delete delete A contaminant screen 2 for filtering contaminants in the wastewater introduced through the input pipe 1, a contaminant dehydrator 3 installed below one side of the contaminant screen 2, and a flow adjusting tank into which the filtrate flows ( 17), a filtrate collection tank 19 provided on one side of the flow rate adjusting tank 17, a fine seed screen 7 connected to the flow rate adjusting tank 17 and the flow path tube 22, and the flow rate adjusting tank A pre-treatment apparatus for livestock wastewater and septic tank wastewater comprising a solid-liquid centrifuge 10 for centrifugation of the filtrate conveyed from (17), In the lower part of the screen (2) A flow path tube 5 is installed, a sand separator 6 is installed in the flow path tube 5, and the flow rate adjusting tank 17 is over discharged into the filtrate collection tank 19 when the introduced filtrate overflows. A pump 27 for pumping and transporting the filtrate of the flow tube 16 and the flow rate adjusting tank 17 to the fine seed screen 7 or the solid-liquid centrifuge 10 is installed through the flow path tube 22. One side of the fine seed screen (7) is a fine seed dehydrator 13 is spoken, the middle of the flow pipe (22) branching the bypass pipe (8) is the filtrate discharged from the fine seed screen (7) The branch pipe 9 is in contact with the branch pipe 9, and the branch pipe 9 branches the filtrate supply branch pipe 9a to be connected to the solid-liquid centrifuge 10, and the flow pipe 22, the bypass pipe 8 and The branch pipes 9 are provided with valves 30, 28, and 29, respectively, to control the supply direction of the filtrate, and the solid-liquid centrifuge 10 The dewatered filtrate is allowed to flow out to the wastewater treatment process 21 through the filtrate outflow pipe 11, and the contaminants discharged from the debris dehydrator (3), gravel, sand discharged from the sand separator (6) And, the fine seeds, fibers discharged from the fine seed dehydrator 13 and the dewatering sludge discharged from the liquid centrifuge 10 to be discharged to the conveying conveyor 20, the end of the conveying conveyor (20) A pre-treatment apparatus for livestock wastewater and septic tank wastewater, characterized in that a separation device (25) is provided for separating contaminants, fine seeds and dewatering sludges into waste and fertilizer components.