CN107216010A - A kind of dirty Sources decreasing processing system of big-and-middle-sized pig breeding farm excrement and processing method - Google Patents

Abstract

The present invention provides a kind of big-and-middle-sized pig breeding farm excrement dirty Sources decreasing processing system, including pig house, wastewater collection pipe, collecting dung canal, collecting-tank and manure pit, pig house is partitioned into pigsty by pig house division wall, pig house is arranged at intervals with the groove that catchments on ground, the groove that catchments is set along pig house length direction, it is identical that the length of groove of catchmenting and pig house give up length, and Neighbor Set water groove is parallel to each other, the groove that catchments is connected with wastewater collection pipe, wastewater collection pipe is connected with collecting-tank, and collecting-tank is arranged at pig house one end；Pig house ground is cement flooring, and pig house is above the ground equipped with self-cleaning water permeable brick, and self-cleaning water permeable brick covers the groove that catchments；Collecting dung canal is located at pig house side along pig house length direction, and is connected with pigsty, and collecting dung canal is connected with manure pit.The present invention can effectively reduce the yield of sewage after the excrement soiled ends separation of solid and liquid in manure pit, and Sources decreasing reaches 91.7%, reduce the dirty intractability of excrement, save processing cost.

Description

A source reduction treatment system and treatment method for manure in large and medium-sized pig farms

technical field

The invention relates to a source reduction treatment system and treatment method for large and medium-sized pig farms, belonging to the technical field of wastewater treatment.

Background technique

In recent years, the rapid development of my country's pig breeding industry, stable breeding and obvious benefits have effectively promoted the rapid development of the rural economy and become one of the important industries of my country's agriculture and rural economy. However, the rapid development of the pig breeding industry, while increasing economic income and creating social wealth for the vast number of breeding enterprises, inevitably exposed some problems that cannot be ignored and urgently needed to be solved, that is, the pollution caused by pig farm manure. During pig farming, each pig is a source of pollution. According to statistics, the daily excretion coefficients (g/head) of pigs during the 180-day production period are respectively feces 2200, urine 2900, total nitrogen 25.06, and total phosphorus 9.44. The sewage produced by each pig in a day is equivalent to the waste water produced by 7 people in a day's life. If the sewage is not treated or not treated thoroughly, it will seriously pollute the water source.

Because many pig farms have problems such as the lack of consideration of the combination of planting and breeding in the early planning or the difficulty of land transfer in the later stage, most of the large and medium-sized pig farms do not have corresponding supporting land around them, and the pig breeding industry is gradually separated from the planting industry and the large agricultural production system. Developing towards high scale, intensification, specialization and regionalization, a large amount of waste generated cannot be fully and effectively utilized in the agricultural industry chain, causing great harm to the local environment.

At present, there are two main modes of pig manure treatment: (1) Water flushing mode, that is, when the pig house is cleaned every day, the floor of the pig house is directly cleaned with clean water, and the excrement and flushing water are discharged into a special storage area through the leaking manure floor. Septic tank; (2) Dry excrement cleaning mode, which uses manual or machine to clean and collect the feces, and the urine flows out from the urinal and is collected separately. In the process of flushing manure with water, the amount of sewage produced is 30-40L/head·d; in the process of dry-cleaning manure, the amount of sewage generated after solid-liquid separation is 5-10L/head·d, and the amount of sewage produced is relatively large.

At present, there are existing patents on the method of manure treatment in pig farms. For example, Chinese patent document CN 105165636 A discloses an automatic manure treatment system and method for pig farms, including mechanical excrement scraping equipment for separation of manure and urine in pig houses, and feces outside the house. Automated transportation equipment, feces fermentation equipment and sewage purification treatment equipment. This method can realize automatic control and improve the work efficiency of the breeders. The use of mechanical dung scrapers and electric dung trucks can realize full automation, but it does not take pig farm manure into consideration. The source of pollution is reduced, and the equipment is automated, which consumes a lot of energy and costs a lot. For another example, Chinese patent document CN 104402175A discloses a biochemical treatment system for pig farm wastewater, which consists of a grid tank, a water collection mixing tank, a solid-liquid separator, a primary sedimentation regulating hydrolysis acidification tank, an IC reactor, and a Level anoxic pool, first carbon lye pool, first level aerobic pool, intermediate sedimentation tank, second level anoxic pool, second carbon lye pool, second level aerobic pool, chemical pool, phosphorus removal sedimentation pool, acidification Pond, aerobic pond, disinfection pond, and packing. The sewage treatment effect of this system is good, and the discharge can finally meet the standard; After liquid separation, the amount of sewage generated is large, the treatment is difficult, and the operating cost is high.

Therefore, in view of the problems that large and medium-sized pig farms produce a large amount of sewage after solid-liquid separation, and the surrounding matching farmland cannot absorb the generated manure, research and develop a method that can effectively reduce the source of manure and reduce the cost of sewage. It is imperative to implement a manure treatment method for large and medium-sized pig farms with standard discharge, simple process, convenient operation and maintenance, and low construction and operation costs.

Contents of the invention

Aiming at the deficiencies in the prior art, the present invention provides a source reduction treatment system and treatment method for manure in large and medium-sized pig farms, so as to realize the simplification of the treatment of manure in pig farms and achieve "zero pollution" and "zero pollution". Emissions" to reduce disposal costs.

Terminology Explanation:

Large and medium-sized pig farms: Refers to farms with 3,000 or more pigs on hand.

The present invention is achieved through the following technical solutions:

A source reduction treatment system for large and medium-sized pig farms, including pig houses, waste water collection pipes, excrement collection canals, sumps and septic tanks. The pig houses are separated into pig pens by partition walls of the pig houses. The reason is that there are water collecting grooves arranged at intervals on the ground of the pig house, and the water collecting grooves are arranged along the length direction of the pig house. The length of the water collecting grooves is the same as the length of the pig house, and the adjacent water collecting grooves are parallel to each other. The tank is connected to the waste water collection pipe, the waste water collection pipe is connected to the sump, and the sump is set at one end of the pig house; the ground of the pig house is cement floor, and self-cleaning permeable bricks are laid on the ground of the pig house, and the self-cleaning permeable bricks cover the water collection Groove; the excrement collection channel is located on one side of the pig house along the length of the pig house, and is connected to the pig pen, and the manure collection channel is connected to the septic tank.

Preferably according to the present invention, the water collecting groove is a V-shaped groove, the inner wall of the V-shaped groove is made of polyethylene material, the width of the top opening of the V-shaped groove is 4-8 cm, and the width between the V-shaped grooves is 4-8 cm. The interval is 80-150cm. The sewage on the self-cleaning permeable brick can be automatically infiltrated into the water collection groove through the self-cleaning permeable brick for easy collection.

Preferably, the width of the top opening of the V-shaped grooves is 6 cm, and the interval between the V-shaped grooves is 100 cm.

Preferably, the V-shaped groove is gradually deepened from the end of the pig house away from the sump to the end connected to the waste water collection pipe. The initial depth of the V-shaped groove is 3-8cm, and the distance between the bottom end of the V-shaped groove and the water level The angle between them is 1-10°. The inclined setting of the catchment groove facilitates the collection of percolation waste water.

Further preferably, the angle between the bottom end of the V-shaped groove and the horizontal plane is 5°.

Preferably according to the present invention, the collection of the water collection grooves is connected with the waste water collection pipe.

Preferably according to the present invention, the ground of the pig house is arranged horizontally, the top of the water collection groove is flush with the ground of the pig house, and the self-cleaning permeable bricks are horizontally laid on the ground of the pig house. Conducive to excrement cleaning.

Preferably, the self-cleaning permeable brick is laid horizontally with the long and wide surface as the bottom surface.

Preferably according to the present invention, the self-cleaning permeable bricks are fixed by pouring concrete.

Preferably according to the present invention, the specification of the self-cleaning permeable brick is 150×50×30-300×200×100mm in length×width×height, the compressive strength is 20-50MP, and the water permeability is 3-10mm/s .

Preferably, the length×width×height of the self-cleaning permeable brick is 200×100×60mm, the compressive strength is 25MP, and the water permeability is 5mm/s.

The self-cleaning permeable brick described in the present invention is a commercially available product, which is available from Jiangsu Youning Shubulock Company.

Preferably according to the present invention, the length of the excrement collection channel is the same as the length of the pig house; the top of the excrement collection channel is lower than the self-cleaning permeable brick or flush with the self-cleaning permeable brick; the bottom of the excrement collection channel is higher than Septic tank or flush with septic tank.

Preferably according to the present invention, the top of the septic tank is lower than the bottom of the water collection ditch or is flush with the bottom of the water collection ditch.

Preferably according to the present invention, the cesspool and the sump are arranged at the same end of the pig house.

Preferably according to the present invention, the manure source reduction treatment system for large and medium-sized pig farms also includes a manure scraper, and the manure scraper is arranged on the manure collection channel; the existing automatic manure scraper is used for the manure scraper The plate device is installed on the feces collection channel; the automatic manure scraping plate device is available from Henan Fangda Machinery Equipment Co., Ltd., and it can be installed on the feces collection channel according to the commodity installation rules.

Preferably according to the present invention, a pig feeding trough is provided along the length direction of the pig house in the middle of the pig house, the length of the pig feeding trough is the same as the length of the pig house, and the pigsty is distributed on both sides of the pig feeding trough, and the length × width of the pigsty is (3-4)m×(5-6)m, the partition walls of pig houses between adjacent pig pens are parallel to each other and parallel to the width direction of pig houses.

Preferably according to the present invention, the pigsties are all provided with drinking fountains.

The processing method for reducing the amount of manure source by using the above-mentioned large and medium-sized pig farm manure source reduction treatment system includes the following steps:

The sewage in the feces produced by live pigs is filtered through the self-cleaning permeable bricks and enters the catchment trench, passes through the waste water collection pipe, and finally collects into the sump; the feces after filtering sewage are left on the self-cleaning permeable bricks, and the feces are cleaned manually Or the way of flushing manure with water into the feces collection canal, and the feces in the feces collection canal are scraped into the septic tank through the scraper; The generated biogas is used in pig farms, and biogas residue and biogas slurry are used as organic fertilizers for farmland.

Sewage in the feces produced by pig farms of the present invention refers to the urine produced by pigs, the water spilled from drinking water, the water produced by flushing excrement with water, and the sewage in the excrement.

The manure source reduction treatment system of the present invention is applied to pig houses, and the manure left on the self-cleaning permeable brick can be collected into the manure collection canal by washing the manure with water or manually cleaning the manure.

The manual cleaning of feces in the present invention refers to manually scraping the feces on the self-cleaning permeable bricks into the feces collection channel by using the feces scraper; Collecting channels; the feces left on the self-cleaning permeable bricks also contain a small amount of sewage.

Technical characteristics of the present invention are as follows:

The self-cleaning permeable brick used in the present invention is mainly used in urban road construction at present, and its characteristic is that the photocatalyst technology is applied to the concrete permeable floor brick. Under the irradiation of light, it will produce a photocatalytic reaction similar to photosynthesis and produce Produces free hydroxyl groups and active oxygen with strong oxidizing ability, has a strong photoredox function, can oxidize and decompose various organic compounds and some inorganic substances, and decompose organic pollutants into non-polluting water (H ₂ O) and carbon dioxide (CO ₂ ), so it has strong antifouling, self-cleaning, air and water purification functions; laying self-cleaning permeable bricks on the floor of pig houses can effectively solve the problem that the pores of permeable floor tiles are easily blocked by feces.

The sewage in the manure produced by pigs passes through the self-cleaning permeable bricks, enters the catchment trench, and enters the sump through the waste water collection pipe; since the waste water in the sump contains almost no feces, the index of waste water pollution is low, and sand After the biological filter or oxidation pond is treated, it can reach the "Farmland Irrigation Water Quality Standard" or "Pollutant Discharge Standard for Livestock and Poultry Breeding Industry", that is, it can discharge up to the standard; the feces after filtering the sewage are left on the upper part of the self-cleaning permeable brick, and are passed through artificially. The feces are cleaned or flushed with water into the feces collection channel, and then scraped into the septic tank by the scraper; the concentration of feces in the septic tank is high, which greatly reduces the amount of sewage produced after solid-liquid separation. After oxygen fermentation, the generated biogas is used in pig farms, and the generated biogas residue and biogas slurry are used as farmland organic fertilizers, which reduces the treatment cost of sewage generated by solid-liquid separation of manure in the cesspool.

The indicators of manure from pig farms before and after being processed by the source reduction system of the present invention are as shown in Table 1. As can be seen from Table 1, the TS content of the feces collected by the piggery before the source reduction treatment system is 2- 6%, indicating that during the pig breeding process, pig urine and pig drinking water are more spilled, mixed with feces and the concentration is low, it is too difficult to discharge up to the standard, and the water content of returning to the field is high, which is difficult to handle; after applying the source reduction treatment system, After being filtered by self-cleaning permeable bricks, the pollution index of wastewater collected by the catchment ditch is relatively low. After being treated by sand biofilter or oxidation pond, it can reach the "Water Quality Standards for Farmland Irrigation" or "Pollutant Discharge Standards for Livestock and Poultry Breeding Industry" "; and after being treated by the source reduction system, the TS concentration of the feces collected in the septic tank is relatively high, which can reach 28-30%, which greatly reduces the amount of sewage produced after solid-liquid separation, and the small amount of sewage produced is anaerobic fermentation. The utilization of post-farmland reduces the treatment cost of sewage generated after solid-liquid separation of manure.

Note: "Pollutant Discharge Standards for Livestock and Poultry Breeding Industry" effluent COD is 400mg/L, BOD is 150mg/L, SS is 200mg/L, NH ₄ +-N is 80mg/L, and TP is 8mg/L. "Farmland Irrigation Water Quality Standard" effluent COD is 200mg/L, BOD is 100mg/L.

Table 1 Fecal indicators of farms before and after applying the source reduction treatment system

The beneficial effects of the present invention are as follows:

1. The present invention creatively utilizes the advantages of the special building material-self-cleaning permeable brick, and applies it to pig houses in pig farms. The permeable brick uses photocatalyst technology to oxidize and decompose the solid feces that enter the gaps in the permeable brick, solving the problem of The pores of permeable bricks are easy to be blocked; at the same time, self-cleaning permeable bricks can filter the waste water in the feces, which greatly reduces the pollution of waste water. It is suitable for manure treatment of large and medium-sized pig farms where the combination of breeding and breeding is not tight or the surrounding soil does not match the amount of breeding.

2. After the solid-liquid separation of the feces in the septic tank, the amount of sewage obtained is small and the concentration is high (TS content reaches 8-10%), which is beneficial to the carrying out of anaerobic fermentation; the system of the present invention can effectively reduce the amount of sewage collected The amount of sewage produced by the solid-liquid separation of the manure in the septic tank can be reduced by 91.7% at the source, which reduces the difficulty of treating the sewage after the solid-liquid separation of the manure and saves treatment costs.

3. The present invention uses the water collection groove whose inner wall is polyethylene to collect sewage, which avoids the pollution of the soil by the waste water infiltrating into the soil; at the same time, the water collection groove is arranged obliquely, which is convenient for the collection of waste water, and can ensure the self-cleaning permeable brick Lay it flat in the piggery to facilitate the collection of manure.

4. The present invention has simple structure, convenient construction, and easy maintenance and use.

Description of drawings

Fig. 1 is the process flow chart of the present invention's manure source reduction treatment;

Fig. 2 is the structure schematic diagram of the source reduction treatment system of large and medium-sized pig farms of the present invention;

Fig. 3 is a sectional view of the pig house along the direction of Fig. 2A-A.

Fig. 4 is a sectional view of the pig house along the direction of Fig. 2B-B.

Among them: 1. Pig house, 2. Pig pen, 3. Pig feeding trough, 4. Drinking fountain, 5. Self-cleaning permeable brick, 6. Scraping dung board, 7. Feces collection channel, 8. Pig house partition wall, 9. Wastewater collection pipe, 10. Septic tank, 11. Water collection tank, 12. Water collection trench, 13. Pig house floor.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

Example 1

A source reduction treatment system for large and medium-sized pig farms, comprising a pig house 1, a waste water collection pipe 9, a feces collection channel 7, a sump 11 and a septic tank 10, the pig house 1 passes through a pig house partition wall 8 The pigsty 2 is spaced apart, and the pig house ground 13 is provided with water collecting grooves 12 at intervals, and the water collecting grooves 12 are arranged along the length direction of the pig house 1, and the length of the water collecting grooves 12 is the same as that of the pig house 1, and The adjacent catchment grooves 12 are parallel to each other, the catchment grooves 12 are connected with the waste water collection pipe 9, the waste water collection pipe 9 is connected with the sump 11, and the sump 11 is arranged at one end of the pig house 1; the pig house floor 13 is a cement floor , the top of pig house floor 13 is laid with self-cleaning type permeable brick 5, and self-cleaning type permeable brick 5 covers catchment groove 12; Excrement collecting canal 7 is positioned at the side of pig house 1 along the length direction of pig house 1, and with The pigsty 2 is connected, and the excrement collection channel 7 is connected with the septic tank 10;

The water collecting groove 12 is a V-shaped groove, the inner wall of the V-shaped groove is polyethylene material, the width of the top opening of the V-shaped groove is 6cm, and the interval between the V-shaped grooves is 100cm; The groove deepens gradually from one end of the pig house 1 away from the sump 11 to the end of the waste water collection pipe 9. The initial depth of the V-shaped groove is 3 cm, and the angle between the bottom of the V-shaped groove and the horizontal plane is 5°; the plurality of V-shaped grooves are collected and communicated with the waste water collection pipe;

The ground 13 of the pig house is set horizontally, the top of the V-shaped groove is flush with the ground 13 of the pig house, and the self-cleaning permeable brick 5 is horizontally laid on the ground 13 of the pig house with the surface composed of length and width as the bottom surface; The self-cleaning permeable bricks 5 are fixed by pouring concrete;

The specification of the self-cleaning permeable brick 5 is 200×100×60mm in length×width×height, the compressive strength is 25MP, and the water permeability is 5mm/s; the self-cleaning permeable brick 5 used is a commercially available product, It is available from Jiangsu Youningshu Block Company.

The length of described excrement collection channel 7 is identical with the length of pig house 1; The top of excrement collection channel 7 is lower than self-cleaning type permeable brick 5; The bottom of excrement collection channel 7 is higher than cesspool 10; The top is lower than the bottom of the water collecting groove 12;

The cesspool 10 and the sump 11 are arranged at the same end of the pig house 1;

The manure source reduction treatment system for large and medium-sized pig farms also includes a dung scraper 6, and the dung scraper 6 is arranged on the feces collection channel 7; the existing automatic dung scraper device is used for the scraper 6 Set on the feces collection channel 7; the automatic manure scraper device is available from Henan Fangda Machinery Equipment Co., Ltd., and can be installed on the feces collection channel 7 according to the commodity installation rules;

In this embodiment, a pig feeding trough 3 is also provided along the length direction of the pig house 1 in the middle of the pig house 1. The length of the pig feeding trough 3 is the same as that of the pig house 1, and the pigsty 2 is distributed in the pig feeding trough 3. On both sides, the length × width of the pigsty 2 is 3m × 5m, and the pigsty partition walls 8 between the adjacent pigsty 2 are parallel to each other and parallel to the width direction of the pigsty 1; the pigsty 2 is provided with drinking fountain4.

Example 2

Utilize the method for reducing the amount of manure source treatment system of embodiment 1 to handle 20,000 pig farm manures in stock, the steps are as follows:

Pigs move on the self-cleaning permeable brick 5, and the waste water in the manure such as feces and urine, water spilled in the drinking process is filtered through the self-cleaning permeable brick 5, collected in the water collection groove 12, and passed through the waste water collection pipe 9 , and finally collect into the sump 11; the feces after filtering sewage are left on the self-cleaning permeable brick 5, and the feces enter the feces collection channel 7 through manual cleaning or water flushing. The manure plate 6 is scraped into the cesspool 10; the feces in the cesspool 10 are separated from solid and liquid, and the small amount of sewage produced is anaerobically fermented, and the biogas generated is used in pig farms, and the biogas residue and biogas slurry are used as farmland organic fertilizers .

Table 2 shows the production volume and index data of solid-liquid separation sewage before and after the application of the source reduction treatment system for a farm with 20,000 pigs that uses water flushing and manual cleaning of manure. It can be seen from Table 2:

(1) Use water to flush manure alone to clean manure. Before applying the source reduction treatment system, the manure is separated from solid and liquid, and the amount of sewage produced every day is 600t. The TS concentration is about 2.0%, which is relatively low. The amount of sewage produced Large and difficult to treat; after applying the source reduction treatment system, the amount of sewage generated by the solid-liquid separation of feces in the septic tank was significantly reduced to 50t, and the TS concentration was also high, reaching about 8%. Anaerobic fermentation treatment Easy, source reduction reaches 91.7%.

(2) Manual excrement cleaning is used alone. Before the source reduction treatment system is applied, the feces are separated from solid and liquid, and the amount of sewage generated every day is 160t. The TS concentration is about 6.0%. The concentration is low and the sewage production is large. The treatment is difficult; after applying the source reduction treatment system, the feces in the septic tank undergo solid-liquid separation, and the amount of sewage generated by solid-liquid separation is significantly reduced to 40t, and the TS concentration is also high, reaching about 10%, anaerobic The fermentation process is easy, and the source reduction can reach 75%.

Table 2 Production volume and indicators of solid-liquid separation sewage before and after the application of the source reduction treatment system

Example 3

Utilize the method for the manure source reduction treatment system of embodiment 1 to process 40,000 pig farm manures in stock, the steps are as follows:

Pigs move on the self-cleaning permeable brick 5, and the waste water in the manure such as feces and urine, water spilled in the drinking process is filtered through the self-cleaning permeable brick 5, collected in the water collection groove 12, and passed through the waste water collection pipe 9 , and finally collect into the sump 11; the feces after filtering sewage are left on the self-cleaning permeable brick 5, and the feces enter the feces collection channel 7 through manual cleaning or water flushing. The manure plate 6 is scraped into the cesspool 10; the feces in the cesspool 10 are separated from solid and liquid, and the small amount of sewage produced is anaerobically fermented, and the biogas generated is used in pig farms, and the biogas residue and biogas slurry are used as farmland organic fertilizers .

Table 3 shows the production volume and index data of solid-liquid separation wastewater before and after the application of the source reduction treatment system for a farm with 40,000 pigs that uses water flushing and manual cleaning of manure. It can be seen from Table 3:

(1) Use water to flush manure alone to clean manure. Before applying the source reduction treatment system, the manure is separated from solid and liquid, and the amount of sewage produced every day is 1200t. The TS concentration is about 2.0%, which is relatively low. Large and difficult to treat; after applying the source reduction treatment system, the amount of sewage produced by the solid-liquid separation of the feces in the septic tank was significantly reduced to 100t, and the TS concentration was also high, reaching about 8%. Anaerobic fermentation treatment Easy, source reduction reaches 91.7%.

(2) Manual feces cleaning is used alone. Before the source reduction treatment system is applied, the feces are separated from solid and liquid, and the amount of sewage generated every day is 320 tons. The TS concentration is about 6.0%. The concentration is low, and the amount of sewage generated is large. The treatment is difficult; after applying the source reduction treatment system, the feces in the septic tank undergo solid-liquid separation, and the amount of sewage generated by solid-liquid separation is significantly reduced to 80t, and the TS concentration is also high, reaching about 10%, anaerobic The fermentation process is easy, and the source reduction can reach 75%.

Table 3 Production volume and indicators of solid-liquid separation sewage before and after the application of source reduction treatment system

Claims (10)

1. A large and medium-sized pig farm manure source reduction treatment system, comprising pigsty, waste water collection pipe, excrement collection canal, sump and septic tank, the pigsty is separated into pigsty by the pigsty partition wall, It is characterized in that the ground of the pig house is provided with water collecting grooves at intervals, the water collecting grooves are arranged along the length direction of the pig house, the length of the water collecting grooves is the same as the length of the pig house, and the adjacent water collecting grooves are parallel to each other. The water collection groove is connected with the waste water collection pipe, the waste water collection pipe is connected with the sump, and the sump is set at one end of the pig house; the ground of the pig house is cement floor, and self-cleaning permeable bricks are laid on the ground of the pig house, and self-cleaning permeable bricks Cover the water collection trench; the manure collection channel is located on one side of the pig house along the length of the pig house, and is connected to the pig pen, and the manure collection channel is connected to the septic tank. 2. The source reduction treatment system for large and medium-sized pig farms according to claim 1, wherein the water collection groove is a V-shaped groove, and the inner wall of the V-shaped groove is polyethylene Material, the width of the top opening of the V-shaped groove is 4-8cm, and the interval between the V-shaped grooves is 80-150cm; Preferably, the width of the top opening of the V-shaped grooves is 6 cm, and the interval between the V-shaped grooves is 100 cm. 3. The large and medium-sized pig farm manure source reduction treatment system according to claim 2, wherein the depth of the V-shaped groove gradually increases from one end of the pig house far away from the sump to the end connected to the waste water collection pipe. Deepening, the initial depth of the V-shaped groove is 3-8cm, and the angle between the bottom of the V-shaped groove and the horizontal plane is 1-10°; Preferably, the angle between the bottom end of the V-shaped groove and the horizontal plane is 5°. 4. The manure source reduction treatment system for large and medium-sized pig farms according to claim 1, characterized in that the ground of the pig house is set horizontally, and the top of the water collection groove is flush with the ground of the pig house, which is self-cleaning Type permeable bricks are laid horizontally on the ground of the pig house; Preferably, the self-cleaning permeable brick is laid horizontally with the long and wide surface as the bottom surface. 5. The large and medium-sized pig farm manure source reduction treatment system according to claim 1, characterized in that the self-cleaning permeable bricks are fixed by pouring concrete. 6. The source reduction treatment system for large and medium-sized pig farms according to claim 1, wherein the specifications of the self-cleaning permeable bricks are 150×50×30-300× 200×100mm, compressive strength 20-50MP, water permeability 3-10mm/s; Preferably, the length×width×height of the self-cleaning permeable brick is 200×100×60mm, the compressive strength is 25MP, and the water permeability is 5mm/s. 7. The large and medium-sized pig farm manure source reduction treatment system according to claim 1, wherein the length of the manure collection channel is the same as that of the pig house; the top of the manure collection channel is lower than the self-cleaning permeable water Bricks or flush with self-cleaning permeable bricks; the bottom of the feces collection channel is higher than the cesspool or flush with the cesspool; The top of the septic tank is lower than the bottom of the catchment ditch or flush with the bottom of the catchment ditch; The cesspool and the sump are arranged at the same end of the pig house. 8. The large and medium-sized pig farm manure source reduction treatment system according to claim 1, characterized in that, the large and medium-sized pig farm manure source reduction treatment system also includes a manure scraper, and the manure scraper The board is set on the excrement collection channel. 9. The large and medium-sized pig farm manure source reduction treatment system according to claim 1, characterized in that, in the middle of the pig house, a pig feeding trough is provided along the length direction of the pig house, and the length of the pig feeding trough is the same as that of the pig house. The length is the same, the pigsty is distributed on both sides of the pig feeding trough, the length × width of the pigsty is (3-4) m × (5-6) m, the partition walls of the pig houses between adjacent pigsty are parallel to each other, and It is parallel to the width direction of the pigsty; the pigsties are all provided with drinking fountains. 10. The processing method for reducing the amount of manure source in the large and medium-sized pig farm manure source reduction treatment system according to any one of claims 1-9, comprising the following steps: The sewage in the feces produced by live pigs is filtered through the self-cleaning permeable bricks and enters the catchment trench, passes through the waste water collection pipe, and finally collects into the sump; the feces after filtering sewage are left on the self-cleaning permeable bricks, and the feces are cleaned manually Or the way of flushing manure with water into the feces collection canal, and the feces in the feces collection canal are scraped into the septic tank through the scraper; The generated biogas is used in pig farms, and biogas residue and biogas slurry are used as organic fertilizers for farmland.