CN217459149U - Pig farm sewage treatment system - Google Patents

Abstract

The utility model relates to a pig farm sewage treatment system, which comprises a collecting tank, an adjusting tank, a fermentation bed, a black film methane tank, an air flotation tank, a wastewater collecting tank, a primary anaerobic tank, a primary aerobic tank, a secondary anaerobic tank, a secondary aerobic tank, a sedimentation tank, a reaction tank and a disinfection tank, wherein the collecting tank, the adjusting tank, the black film methane tank, the air flotation tank, the primary anaerobic tank, the primary aerobic tank, the secondary anaerobic tank, the secondary aerobic tank, the sedimentation tank, the reaction tank and the disinfection tank are sequentially communicated; the secondary anaerobic tank and the secondary aerobic tank are both communicated with the air floatation tank; the sludge concentration tank is respectively communicated with the sedimentation tank and the reaction tank; and the slag pressing field is respectively communicated with the sludge concentration tank and the regulating tank. Compared with the prior art, the utility model discloses can effectively eliminate the organic matter in the waste water, reduce nitrogen and phosphorus content, adjust the carbon-nitrogen proportion, carry out cyclic utilization to the solid-liquid after handling.

Description

Pig farm sewage treatment system

Technical Field

The utility model relates to a blowdown treatment technical field, particularly, in particular to pig farm sewage treatment system.

Background

With the rapid development of the animal husbandry industry, sewage in the pig farm is discharged at will, surface water, underground water and soil are seriously polluted, and the problem of innocent treatment of the sewage in the pig farm is more and more valued. The sewage generated by the existing pig farm is mainly piggery washing wastewater and excrement wastewater, the generated sewage belongs to high-concentration organic matter sewage, the amount of solid suspended matters is large, and CODcr, BOD5, NH3-N and chromaticity are high; it is necessary to treat these contaminants.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the above-mentioned technical problem among the prior art to a certain extent at least. Therefore, an object of the utility model is to provide a pig farm sewage treatment system that can effectively eliminate the organic matter in the waste water, reduce nitrogen and phosphorus content, adjust the carbon-nitrogen ratio, carry out cyclic utilization to the solid-liquid after handling.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a pig farm sewage treatment system comprises a collecting tank, an adjusting tank, a fermentation bed, a black film methane tank, an air floatation tank, a wastewater collecting tank, a primary anaerobic tank, a primary aerobic tank, a secondary anaerobic tank, a secondary aerobic tank, a sedimentation tank, a reaction tank and a disinfection tank, wherein the collecting tank, the adjusting tank, the black film methane tank, the air floatation tank, the primary anaerobic tank, the primary aerobic tank, the secondary anaerobic tank, the secondary aerobic tank, the sedimentation tank, the reaction tank and the disinfection tank are sequentially communicated; the secondary anaerobic tank and the secondary aerobic tank are both communicated with the air floatation tank;

the sludge concentration tank is respectively communicated with the sedimentation tank and the reaction tank; and the slag pressing field is respectively communicated with the sludge concentration tank and the regulating tank.

The utility model has the advantages that: the method comprises the steps of treating the wastewater by utilizing a collecting tank, an adjusting tank, a fermentation bed, a black film methane tank, an air flotation tank, a wastewater collecting tank, a primary anaerobic tank, a primary aerobic tank, a secondary anaerobic tank, a secondary aerobic tank, a sedimentation tank, a reaction tank and a disinfection tank, carrying out solid-liquid separation on the wastewater, removing organic matters in the wastewater, reducing the content of nitrogen and phosphorus, adjusting the carbon-nitrogen ratio, and recycling the treated solid and liquid.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Furthermore, the collecting tank is communicated with a sewage discharge concealed pipe of the pig farm, and a grid is fixedly arranged at the communication position of the collecting tank and the sewage discharge concealed pipe.

The beneficial effect of adopting the further scheme is that: utilize the grid to hold back thick big debris in with waste water, ensure that waste water carries out orderly processing.

Further, fixed mixer and the cutting pump that is provided with broken pig manure in the equalizing basin, the fixed solid-liquid separation machine that is provided with in one side of equalizing basin, the input of cutting pump stretches into in the equalizing basin, the output of cutting pump with the input of solid-liquid separation machine is connected, the pig manure in the cutting pump delivery equalizing basin extremely solid-liquid separation machine interior solid-liquid separation, the waste water that the solid-liquid separation machine will separate out is carried to the fermentation bed and is fermented the degradation.

The beneficial effect of adopting the further scheme is that: utilize the mixer to carry out the breakage to pig manure for pig manure melts into the waste water fast, promotes pig manure treatment effeciency.

Further, a primary lifting pump is fixedly arranged at the position of the wastewater collection tank, the input end of the primary lifting pump extends into the wastewater collection tank, and the output end of the primary lifting pump is communicated with the primary anaerobic tank.

The beneficial effect of adopting the further scheme is that: utilize the one-level elevator pump to carry waste water, promote waste water treatment efficiency.

Further, still include the retrieval and utilization pond, retrieval and utilization pond with disinfection pond intercommunication.

The beneficial effect of adopting the further scheme is that: the reuse pool is used for temporarily storing the treated wastewater, so that the wastewater can be conveniently and subsequently utilized.

Drawings

FIG. 1 is a block diagram of a sewage treatment system for a pig farm.

In the drawings, the components represented by the respective reference numerals are listed below:

1. the system comprises a collecting tank, 2, a regulating tank, 3, a fermentation bed, 4, a black film methane tank, 5, an air flotation tank, 6, a wastewater collecting tank, 7, a primary anaerobic tank, 8, a primary aerobic tank, 9, a secondary anaerobic tank, 10, a secondary aerobic tank, 11, a sedimentation tank, 12, a reaction tank, 13, a disinfection tank, 14, a sludge concentration tank, 15, a slag pressing field, 16 and a recycling tank.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1, a sewage treatment system for a pig farm comprises a collecting tank 1, an adjusting tank 2, a fermentation bed 3, a black film methane tank 4, an air flotation tank 5, a waste water collecting tank 6, a primary anaerobic tank 7, a primary aerobic tank 8, a secondary anaerobic tank 9, a secondary aerobic tank 10, a sedimentation tank 11, a reaction tank 12 and a disinfection tank 13, wherein the collecting tank 1, the adjusting tank 2, the black film methane tank 4, the air flotation tank 5, the primary anaerobic tank 7, the primary aerobic tank 8, the secondary anaerobic tank 9, the secondary aerobic tank 10, the sedimentation tank 11, the reaction tank 12 and the disinfection tank 13 are sequentially communicated; the secondary anaerobic tank 9 and the secondary aerobic tank 10 are both communicated with the air floatation tank 5;

the device also comprises a sludge concentration tank 14 and a slag pressing field 15, wherein the sludge concentration tank 14 is respectively communicated with the sedimentation tank 11 and the reaction tank 12; the slag pressing field 15 is respectively communicated with the sludge concentration tank 14 and the regulating tank 2.

In the above embodiment, the collecting tank 1 is communicated with a sewage draining concealed pipe of a pig farm, and a grid is fixedly arranged at the communication position of the collecting tank 1 and the sewage draining concealed pipe.

In the above embodiment, 2 internal fixation of equalizing basin is provided with mixer and the cutting pump of broken pig manure, the fixed solid-liquid separation machine that is provided with in one side of equalizing basin 2, the input of cutting pump stretches into in the equalizing basin 2, the output of cutting pump with the input of solid-liquid separation machine is connected, the pig manure that the cutting pump carried in the equalizing basin 2 extremely solid-liquid separation machine internal solid-liquid separation, solid-liquid separation machine carries the waste water of separating out to fermentation bed 3 and carries out fermentation degradation.

In the above embodiment, a first-stage lift pump is fixedly arranged at the wastewater collection tank 6, an input end of the first-stage lift pump extends into the wastewater collection tank 6, and an output end of the first-stage lift pump is communicated with the first-stage anaerobic tank 7.

In the above embodiment, a recycling tank 16 is further included, and the recycling tank 16 is communicated with the disinfection tank 13.

In the embodiment, rain and sewage are divided by two ditches in a pig farm, rainwater is discharged into a fishpond through an open ditch, pig manure water and flushing wastewater from the pig farm firstly enter a collecting tank 1 through a concealed pipe, and coarse impurities in the wastewater, such as insoluble garbage of plastic bags, disinfection bottles, disinfection packaging bags, nylon ropes and the like, are intercepted by using a grid, so that the coarse impurities are prevented from entering a large HDPE black film methane tank to cause pipeline blockage of the methane tank, and the consequences of difficult cleaning and normal operation are avoided;

the wastewater automatically flows into an adjusting tank 2 after passing through a collecting tank 1, pig manure is stirred and crushed by a stirrer, lumpy pig manure which is not completely cleaned is crushed to form a mixed solution which is uniformly conveyed by a cutting pump to enter a solid-liquid separator for solid-liquid separation, separated dry manure is concentrated into a composting plant for fermentation treatment and then used as organic fertilizer, the wastewater is lifted and conveyed to a fermentation bed 3 for fermentation degradation, and penetrating fluid automatically flows into a black film methane tank 4;

the methane tank volume of the black film methane tank 4 is 8000m ³ Of biogas bacteria on waste waterThe organic matter is decomposed, the removal rate of COD is high, the biogas slurry from the black film biogas digester 4 enters the air floatation tank 5, the wastewater is subjected to anaerobic treatment in the air floatation tank 5, and the COD in the wastewater is removed _cr And BOD ₅ Meanwhile, gas, water and slag in the wastewater are effectively separated; under the action of air pressure and water pressure, the wastewater treated in the air flotation tank 5 automatically overflows into a wastewater collection tank 6 for collection, and the wastewater is sent into a primary anaerobic tank 7 through a primary lift pump for denitrification treatment;

under the condition that the activated sludge in the primary anaerobic tank 7 does not contain molecular oxygen, oxygen in nitric acid and nitrite ions is used for breathing, nitrate nitrogen in the wastewater is reduced into nitrogen and volatilized into the atmosphere, and nitrogen and phosphorus removal is realized; the wastewater enters a primary aerobic tank 8, aerobic bacteria in the activated sludge in the primary aerobic tank 8 utilize dissolved organic matters in the wastewater to carry out metabolism, and the dissolved organic matters are converted into CO ₂ And H ₂ Releasing the O to convert the ammonia nitrogen into nitrate nitrogen; the wastewater treated in the primary aerobic tank 8 is further treated in a secondary anaerobic tank 9 and a secondary aerobic tank 10, so that organic matters are effectively eliminated;

the wastewater discharged from the secondary aerobic tank 10 enters a sedimentation tank 11, the wastewater is subjected to mud-water separation under the action of water pressure and gravity, and the precipitated high-concentration activated sludge flows back to the primary anaerobic tank 7 under the action of air pressure to circularly degrade organic matters in the wastewater; the supernatant in the sedimentation tank 11 automatically flows into the reaction tank 12, a flocculating agent is added into the reaction tank 12 to perform flocculation reaction on the wastewater, and the settled sludge is discharged to a sludge concentration tank 14; supernatant in the reaction tank 12 automatically flows into the disinfection tank 13, disinfectant is added into the disinfection tank 13 to sterilize and disinfect the wastewater, and the wastewater after disinfection automatically flows into the recycling tank for recycling, so that the wastewater in the pig farm is treated.

Wherein, the sludge in the sedimentation tank 11 and the reaction tank 12 is extruded and concentrated in a sludge concentration tank 14, and the concentrated sludge is discharged to a slag pressing field 15 for slag pressing; the wastewater in the second-stage anaerobic tank 9 and the second-stage aerobic tank 10 can also flow back to the air floatation tank 5 for repeated treatment, so that the wastewater treatment cleanliness is improved.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (5)

1. The utility model provides a pig farm sewage treatment system which characterized in that: the device comprises a collecting tank (1), an adjusting tank (2), a fermentation bed (3), a black film methane tank (4), an air flotation tank (5), a wastewater collecting tank (6), a primary anaerobic tank (7), a primary aerobic tank (8), a secondary anaerobic tank (9), a secondary aerobic tank (10), a sedimentation tank (11), a reaction tank (12) and a disinfection tank (13), wherein the collecting tank (1), the adjusting tank (2), the black film methane tank (4), the air flotation tank (5), the primary anaerobic tank (7), the primary aerobic tank (8), the secondary anaerobic tank (9), the secondary aerobic tank (10), the sedimentation tank (11), the reaction tank (12) and the disinfection tank (13) are sequentially communicated; the secondary anaerobic tank (9) and the secondary aerobic tank (10) are both communicated with the air floatation tank (5);

the device also comprises a sludge concentration tank (14) and a slag pressing field (15), wherein the sludge concentration tank (14) is respectively communicated with the sedimentation tank (11) and the reaction tank (12); and the slag pressing field (15) is respectively communicated with the sludge concentration tank (14) and the regulating tank (2).

2. The pig farm wastewater treatment system according to claim 1, wherein: the collecting tank (1) is communicated with a sewage discharge concealed pipe of a pig farm, and a grid is fixedly arranged at the communication position of the collecting tank (1) and the sewage discharge concealed pipe.

3. The pig farm wastewater treatment system according to claim 1, wherein: the adjustable pig manure cutting device is characterized in that a stirrer and a cutting pump for crushing pig manure are fixedly arranged in the adjusting tank (2), a solid-liquid separator is fixedly arranged on one side of the adjusting tank (2), the input end of the cutting pump extends into the adjusting tank (2), the output end of the cutting pump is connected with the input end of the solid-liquid separator, the cutting pump conveys the pig manure in the adjusting tank (2) to the solid-liquid separator for solid-liquid separation, and the solid-liquid separator conveys separated wastewater to the fermentation bed (3) for fermentation and degradation.

4. The pig farm wastewater treatment system according to claim 1, wherein: the waste water collecting tank (6) is fixedly provided with a one-level lift pump, the input end of the one-level lift pump extends into the waste water collecting tank (6), and the output end of the one-level lift pump is communicated with the one-level anaerobic tank (7).

5. The pig farm wastewater treatment system according to claim 1, wherein: the device also comprises a recycling pool (16), wherein the recycling pool (16) is communicated with the disinfection pool (13).

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