WO2018010194A1

WO2018010194A1 - System and method for separating large-scale pig farm contaminant sources

Info

Publication number: WO2018010194A1
Application number: PCT/CN2016/090666
Authority: WO
Inventors: 汪深; 匡文; 王均灿
Original assignee: 湖南屎壳郎环境科技有限公司; 汪深
Priority date: 2016-07-11
Filing date: 2016-07-20
Publication date: 2018-01-18
Also published as: CN105993973A; CN105993973B

Abstract

A system and a method for separating large-scale pig farm contaminant sources, comprising a rain and contaminant diverting pigsty, a residual pig drinking water collecting and drainage apparatus, and a pig excrement and urine and stall flushing water separating and collecting apparatus; the outside of the side wall of the rain and contaminant diverting pigsty is provided with a rainwater drainage channel (201); a drainage pipeline (101) of the residual pig drinking water collecting and drainage apparatus is connected to the rainwater drainage channel (201) outside the side wall; the pig excrement and urine and stall flushing water separating and collecting apparatus comprises: a slatted floor (202) being installed in the rain and contaminant diverting pigsty, a V-shaped sloping surface (205) being arranged below the slatted floor (230), the bottom end of the V-shaped sloping surface (205) being an excrement clearing ditch, an excrement scraping system being arranged inside the excrement clearing ditch (206), the very bottom end of the excrement clearing ditch (206) being connected to an excrement collecting pit (306), and an input pipeline of a sludge pump (307) being arranged at the bottom of the excrement collecting pit (306). Separation of excrement and urine, rainwater, residual drinking water, and stall flushing water is thereby implemented, such that the excrement and urine and the stall flushing water are respectively automatically collected, laying a solid foundation for the utilisation of excrement and urine as a resource and achieving drainage standards for stall flushing water processing.

Description

Large-scale pig farm source separation system and method

Technical field

The invention relates to a system and a method for separating source of pollutants in a large-scale pig farm, belonging to the field of large-scale livestock and poultry breeding production and pollution control.

Background technique

The intensive and large-scale development of the pig industry provides abundant and high-quality livestock and poultry products to the market. At the same time, it faces enormous environmental pressures caused by a large amount of manure and sewage discharge. If these pollutants are not properly disposed and properly utilized, It not only has a huge negative impact on the ecological environment, but also seriously affects people's health and restricts the healthy development of the pig industry. While developing a large-scale pig farm, how to improve the pig house design, separate the manure, urine and flushing water, and pig drinking water to improve the efficiency of clearing the dung, reduce the difficulty of subsequent pollution control, and reduce the pig manure and The pollution of sewage to the environment has attracted the attention of governments and pig farmers at all levels.

At present, the methods of clearing manure commonly used in large-scale pig farms at home and abroad mainly include blisters, water flushing and dry manure. At present, the common method of blisters and manure is the shortcomings of manure staying in the pig house for a long time. Partial anaerobic fermentation in the manure, producing a large amount of harmful gases such as ammonia, hydrogen sulfide and methane, which reduces the appetite of pigs and harms the health of pigs. People are forced to use high-energy forced ventilation to solve the problem of poisonous gas pollution. However, in the winter, forced ventilation makes the pig house unable to keep warm, pigs are susceptible to infectious diseases such as influenza, and a large number of toxic and harmful gases also affect the work of the breeders and endanger the health of the breeders. Water flushing and manure removal method is also a common method of clearing manure. The disadvantages are large water consumption and serious waste of water resources. In the later process of manure treatment, after solid-liquid separation, the nutrient content in dry matter is low and the fertilizer value is reduced; The amount of sewage is large, and most of the soluble organic matter in the sewage is still high, which increases the difficulty of handling. The dry decontamination method, that is, the feces are diverted once they are produced, the dry manure is collected or removed by mechanical or manual means, the urine and the flushing water are discharged from the sewer, and are separately treated. The dry decontamination process is divided into artificial decontamination. And the mechanical cleaning of the feces, the drawbacks of artificial decontamination is the large amount of labor, poor working environment, low productivity, the advantage of mechanical decontamination is to reduce labor intensity, save labor, improve work efficiency, but currently the domestic production of sewage equipment There are still some defects in the use of reliability, complicated equipment, high failure rate, and difficult maintenance. Whether it is manual decontamination or mechanical decontamination, urine and flushing water, pig drinking water mixed, increase flushing water Processing volume and processing difficulty.

In general, the above-mentioned methods of decontamination mainly have the following problems: (1) There is no separate collection and delivery system for pig drinking water, and pig drinking water is directly mixed with feces, urine and flushing water to increase pollution and treatment costs. . According to statistics, the water that is leaked by the pigs in the duckbill-type drinking fountains accounts for about 20-40% of the total amount of flushing water; (2) the flushing water is not separated from the feces and urine, and the flushing water is directly The manure and urine are mixed for subsequent treatment. The treatment method is usually carried out by anaerobic fermentation in a biogas tank, followed by solid-liquid separation, separating the solid part to prepare solid organic fertilizer, and the liquid part is treated according to the sewage and “reaching the standard”. The disadvantage is that a large amount of nutrients are dissolved in the liquid, and the produced solid organic fertilizer has low nutrient content and poor quality; while the liquid is rich in organic matter, nitrogen, phosphorus, potassium, COD and ammonia nitrogen, the common sewage treatment technology is difficult to achieve discharge. Standard, even in accordance with the current limit of pollutant discharge standards for livestock and poultry farming (GB18596-2001), COD 400mg/L, ammonia nitrogen 80mg/L and total phosphorus 8mg/L, respectively, are the pollutant discharge standards of urban sewage treatment plants ( The so-called “standard discharge” is actually the root cause of eutrophication of water bodies in GB18918-2002, Level 1 A standard. The so-called “standard discharge” actually pollutes the environment.

Chinese patent CN 103798151 A discloses a large-scale pig farm pig manure, liquid mobile separation system and dry clean manure method, which adopts pig house dung, urine and flushing water mobile separation system to make solid feces and liquid urine The disadvantage of liquid and flushing water separation is that the method has high capital cost, and the liquid flushing water contains some feces and all urine, which increases the difficulty and cost of liquid subsequent treatment.

Chinese patent CN 203840933 U has announced a large-scale pig house automatic water supply system, which realizes automatic and quantitative supply of pig drinking water through a self-flowing water-saving device. The disadvantage is that the drinking water is unsanitary, and the water in the water tank passes through the pigs and repeatedly drinks, possibly Cause the spread of disease. Patent 103477995A discloses a manure-separating scraper cleaning system, which is provided with four clearing ditch under the slatted floor, that is, at least four scraping device and two sets of power devices are required, and the method has a large amount of infrastructure construction and a large amount of cleaning equipment. The cost is high, the mechanical failure rate is high, and the equipment maintenance is complicated.

Summary of the invention

The technical problem to be solved by the present invention is to solve the problems existing in the prior art mentioned above, and to provide a separation system and method for the source of pollutants in a large-scale pig farm, and to realize separation of feces and urine, drinking water, and flushing water. The excrement and the flushing water are automatically collected separately, which lays a solid foundation for the utilization of the excreta and the utilization of the flushing water, reduces the labor cost, avoids cross infection of humans and animals, and protects the environmental sanitation.

The technical scheme adopted by the invention is: a large-scale pig farm source separation system, including a rain and sewage diversion pig house, a pig drinking water collection and drainage device, and a pig excrement and a flushing water separation and collecting device; The rainwater and sewage diversion pig house includes a rainwater roof and a side wall, and there is a rainwater drainage ditch outside the side wall; the pig drinking water collection and drainage device is installed in the rainwater and sewage diversion pig house, and the pig drinking water collecting the drainage device of the drainage device The mouth is connected to one end of the drainage pipe, and the other end of the drainage pipe is connected to the rainwater drainage ditch outside the side wall of the rainwater and sewage diversion pig house; the pig manure and the flushing water separation device are: installing a slatted floor in the rain and sewage diversion pig house, leaking Below the seam floor is an inverted eight-character slope. The bottom end of the inverted eight-character slope is a clearing ditch. A scraping manure system is installed in the dung ditch. One end of the dung ditch is connected to the dung pond. The input pipe of the sludge pump is set in the dung. At the bottom of the pool, the output pipe of the sludge pump is connected to the pig manure treatment device and the flushing water treatment device.

In the above technical solution, the pig drinking water collecting device comprises an automatic drinking fountain for pigs, a U-shaped water collecting chamber, a drainage pipe and a rain drain ditches, and an automatic drinking fountain for pigs is installed on the side wall of the pig house, U-shaped set The water chamber is arranged directly below the water outlet of the automatic drinking fountain for pigs. The bottom of the U-shaped water collecting chamber has a water outlet, the water outlet is connected to one end of the drainage pipe, and the other end of the drainage pipe is connected to the rainwater drainage channel outside the side wall of the pig house.

In the above technical solution, the inverted eight-character slope is a slope surface smoothed.

In the above technical solution, the clearing ditch is high at one end and low at the other end, and the inclination is higher than 2 degrees, and the septic tank is connected to the lowest end of the clear ditch.

In the above technical solution, the scraping system includes a driving device, a sensor, a scraping manure control device, a driving rope and a scraping device, and the driving device is connected to the scraping device through a driving rope, and the sensor is disposed at both ends of the clearing ditch, scraping The manure reciprocates in the clear ditch.

In the above technical solution, the septic tank is a funnel type.

In the above technical solution, the scraper is composed of a frame, a scraper, a limit card and a guide pulley, wherein the scraper, the limit card and the guide pulley are fixed on the frame, and the two ends of the scraper respectively Connect the two ends of the drive rope, the limit card is stuck on the side of the scraper, and the drive ropes at both ends of the connecting scraper respectively pass through the guide rope pulley on the rack.

A method for separating source of pollutants in a large-scale pig farm, comprising:

(1) Construction of rainwater and sewage diversion pig houses: The rainwater and sewage diversion pig houses include rainwater roofs and side walls, and there are rainwater drainage ditches outside the side walls. When it rains, it blocks the rainwater, so that the rainwater can be drained through the outdoor ditches in time. Realize the separation of the effluent and the scouring water in the rainwater and the pig house; reduce the water content in the faeces and rushing water, and reduce the later stage Difficulty

(2) Install the pig drinking water in the pig house to collect the efflux device: install the U-shaped water collecting chamber directly under the water outlet of the automatic drinking fountain for pigs, and connect the bottom drain hole of the U-shaped water collecting chamber to the outdoor ditch through the drainage pipe. , so that the pig drinking water is separated from the excrement and flushing water, reducing the water content in the excrement and the rushing water, and reducing the difficulty of post-processing;

(3) Install the slatted floor in the pig house, the bottom of the slatted floor is the inverted sloping slope, the bottom end of the inverted sloping slope is the clearing ditch, and the scraping dung system is set in the clear ditch, and the lowest end of the dung ditch is connected. The septic tank, the input pipe of the sludge pump is arranged at the bottom of the septic tank, and the output pipe of the sludge pump is connected with the pig manure treatment device and the rushing water treatment device;

(4) Every day, the excrement and urine of the pig's excrement are leaked from the slatted floor and fall on the inverted sloping slope or the clear ditch. The feces and urine falling on the inverted sloping surface are under the action of gravity. Sliding into the clear ditch;

(5) Start the scraping system at regular intervals every day. The driving device drives the scraper along the bottom of the clear ditch through the driving rope, moving back and forth from the highest end to the lowest end. When the scraper moves to the septic tank, the limit card is stuck. Scraper, scraper drives the excreta to move forward, and finally collects the excrement into the septic tank; when the scraper runs in the opposite direction of the septic tank, the limit card is not limited, and the scraper is picked up by the drive rope The excrement will not be retrograde; when the sensor detects that the scraper reaches the ends of the clearing ditch, the scraping control device controls the driving device of the scraping device to stop running, and then reverses after the delay;

(6) When there is a pig to clean the pig house, first start the scraping system, scrape the manure in the dung ditch into the septic tank, try to hang it clean, then start the sludge pump, and the sludge pump evacuates the septic tank. The feces and urine in the urine, so that the excrement does not mix into the water;

(7) In the above step (6), after the manure and urine in the septic ditch and the septic tank are exhausted, the rushing water facility is opened to rinse the pig house;

(8) When the column is washed, the scraping system stops running, and the flushing water flows into the clearing ditch through the slatted floor, and is sent to the septic tank to start the sludge pump to pump the flushing water in the septic tank to the rushing column. The water treatment equipment separates the pig manure and the flushing water, and the flushing water does not mix into the excrement.

Beneficial effect

The invention designs a pig drinking water collecting device, which not only considers the requirements of pig drinking water clean and hygienic, but also fully tests Considering the treatment of drinking water and residual water, the design is improved on the basis of the traditional duckbill drinker. A U-shaped water collection chamber is added directly below the duckbill drinker to collect the water and pig's mouth dripping from the duckbill drinker. The water that has been leaked, this part of the water is not polluted, and can be discharged into the natural ditches through the drain port at the bottom end of the U-shaped water collecting chamber and the outside of the pipe. According to statistics, every day, because the water leaked by the pig in the duck-bill drinking fountain accounts for about 20-40% of the total amount of flushing water, the design of the invention greatly reduces the amount of water entering the excrement and the flushing water, so that the feces The urine is not diluted, the cost of resource utilization is reduced, the amount of flushing water is reduced, and the processing cost is lowered.

The invention provides a smooth inverted eight-slope surface and a smooth clearing ditch under the slatted floor, and a scraping manure system is arranged in the dung ditch to realize automatic collection and cleaning of the excrement and the flushing water, thereby greatly reducing the artificial defecation. The labor intensity and the risk of cross-infection in contact with human pigs improve the efficiency of clearing the feces. After automatically cleaning the excrement of the manure ditch and the septic tank, the column is flushed to completely separate the flushing water from the excrement, which greatly reduces the residue of the excrement in the flushing water. The COD and ammonia nitrogen content in the flushing water is greatly reduced. It reduces the pollution degree of flushing water, reduces the difficulty of subsequent treatment of flushing water, and greatly saves the cost of flushing water treatment. Since the excrement does not contain flushing water, the organic matter and nutrients in the excrement are not diluted. Most of them are retained to improve the fertilizer efficiency of liquid organic fertilizer.

Compared with the water flushing manure method, the water saving of the invention is small, the amount of sewage generated per day is small, the amount of manure and urine in the sewage is small, the pollution degree is low, the treatment difficulty is small, and the treatment cost is low; compared with the blisters and manure method, The invention saves energy, reduces the energy consumption of forced exhausting, and cleans the manure in time, the pig grows healthier environment, and the appetite grows fast, thereby improving the growth efficiency. At the same time, the pig house keeps warm in cold weather, and the pig is not easy to get sick. .

At present, the traditional scraper cleaning system mostly uses a plurality of clearing ditch and scraper, and there are many equipments, resulting in high mechanical failure rate and complicated equipment maintenance. The invention combines a plurality of traditional clearing ditch into one, that is, each pig house is provided with a longitudinal inclined clearing ditch, which simplifies the cleaning equipment and reduces the mechanical failure rate, and at the same time makes the dung ditch into an inclined surface, so that the dung is thoroughly cleaned. The efficiency of clearing the manure is also greatly improved. The control system automatically controls the scraping device, which is highly mechanized, reduces manual involvement, and reduces labor costs.

Design a single septic tank to collect excrement and flushing water at the same time, save land and reduce capital cost. At the same time, the bottom of the septic tank is designed as a funnel type, so that the sludge pump can drain the manure or the rushing water in the septic tank. Clean up, avoid mixing the water in the urine and urine, or mix the urine and urine in the water, affecting the subsequent treatment.

In summary, the innovative design of the invention reduces the labor cost, reduces the cross-infection of humans and animals, realizes the separation of the feces and urine, the drinking water, the flushing water, and automatically collects the excrement and the flushing water as the excrement. Capital The use of sourced materials and the treatment of flushing water treatment have laid a solid foundation.

BRIEF DESCRIPTION OF THE DRAWINGS:

1 is a schematic view of a source separation system for pig contaminants according to the present invention;

2 is a schematic view of a pig drinking residual water collecting and discharging device according to the present invention;

Figure 3 is a schematic view of a scraping system according to the present invention;

4 is a schematic view showing the structure of a scraper according to the present invention.

LIST OF REFERENCE NUMERALS: 101-drainage pipe, 102-drainage port, 103-U-type water collection chamber, 104-outlet nozzle, 105-automatic drinking fountain for pigs, 201- pighouse drainage ditch, 202-slit floor, 203 - longitudinal beam, 204 - beam, 205 - inverted eight-slope, 206 - clear ditch, 301 - drive, 302 - drive rope, 303 - scraper, 303A - limit card, 303B - scraper, 304 - Position sensor and mount, 305-scraping control unit, 306-septic tank, 307-sludge pump.

Specific implementation method:

The large-scale pig farm source separation system of the invention comprises a rain and sewage diversion pig house, a pig drinking water collection and drainage device, and a pig excrement and a flushing water separation and collecting device; the rain and sewage diversion pig house comprises a block Rainwater roof and side wall, there is rainwater drainage ditch outside the side wall; the pig drinking water collection and drainage device is installed in the rainwater and sewage diversion pig house, and the pig drinking water collecting and discharging device outlet port is connected to one end of the drainage pipe, drainage The other end of the pipeline is connected to the rainwater drainage ditch outside the side wall of the rainwater and sewage diversion pig house; the pig manure urine and the flushing water separation device are: a slatted floor is installed in the rainwater and sewage diversion pig house, and the slatted floor is below the sloping floor The bottom end of the inverted eight-character slope is the clearing ditch, and the scraping manure system is set in the clear ditch. One end of the dung ditch is connected to the septic tank. The input pipe of the sludge pump is set at the bottom of the septic tank. The output pipeline is connected to the pig manure treatment device and the flushing water treatment device, and the rainwater and sewage diversion pig house is also provided with a flushing water facility.

The above-mentioned pig drinking water collecting device comprises an automatic drinking fountain for pigs, a U-shaped water collecting chamber, a drainage pipe and a rain drain ditches, an automatic drinking fountain for pigs is installed on the side wall of the pig house, and a U-shaped water collecting chamber is set in the pig automatic The water outlet of the drinking fountain is directly below, the bottom of the U-shaped water collecting chamber has a drainage port, the drainage port is connected with one end of the drainage pipe, and the other end of the drainage pipe is connected with the rainwater drainage ditch outside the side wall of the pig house.

The above inverted sloping surface is a slope surface treated with a smooth surface.

In the above technical solution, the clearing ditch is high at one end and low at the other end, and the inclination of the high and low is greater than 2 degrees. The lower end of the dung ditch is connected to the septic tank.

In the above technical solution, the septic tank is a funnel type.

In the above technical solution, the scraper is equipped with a scraper, a limit card and a guide pulley on the frame, and the two ends of the scraper are respectively connected to the two ends of the drive rope, and the limit card is stuck on the side of the scraper, and is connected. The drive ropes at both ends of the squeegee pass through the guide rope pulleys on the gantry.

(1) Construction of rainwater and sewage diversion pig houses: The rainwater and sewage diversion pig houses include rainwater roofs and side walls, and there are rainwater drainage ditches outside the side walls. When it rains, it blocks the rainwater, so that the rainwater can be drained through the outdoor ditches in time. Realize the isolation of rainwater from the excrement and flushing water in the pig house; reduce the water content in the excrement and flushing water, and reduce the difficulty of post-processing;

(2) Install the pig drinking water in the pig house to collect the efflux device: install the U-shaped water collecting chamber directly under the water outlet of the automatic drinking fountain for pigs, and connect the bottom drain hole of the U-shaped water collecting chamber to the outdoor ditch through the drainage pipe. , so that the pig drinking water is separated from the excrement and the flushing water, reducing the water content in the excrement and the rushing water, and reducing the difficulty of post-processing;

(3) Install the slatted floor in the pig house, the bottom of the slatted floor is the inverted sloping slope, the bottom end of the inverted sloping slope is the clearing ditch, and the scraping manure system is set in the septic ditch. The input pipe of the sewage pump and the sludge pump is arranged at the bottom of the septic tank, and the output pipe of the sludge pump is connected with the pig manure treatment device and the flushing water treatment device;

(5) Start the scraping system at regular intervals every day. The driving device drives the scraper along the bottom of the clear ditch through the driving rope, moving back and forth from the highest end to the lowest end. When the scraper moves to the septic tank, the limit card is stuck. Scraper, scraper drives the excreta to move forward, and finally collects the excrement into the septic tank; when the scraper runs in the opposite direction of the septic tank, the limit card is not limited, and the scraper is picked up by the drive rope , the excrement will not be retrograde; when the sensor detects the scraping When the device reaches the two ends of the clearing ditch, the scraping manure control device controls the driving device of the scraping device to stop running, and then reverses the operation after the delay;

(6) When there is a pig out of the bar or need to clean the slatted floor, inverted sloping slope, clear manure ditch, first start the scraping manure system, scrape the manure in the dung ditch into the septic tank, try to hang clean, then start The sludge pump and the sludge pump evacuate the feces and urine in the septic tank so that the excrement does not mix into the rushing water;

(7) In the above step (6), after the manure and urine in the septic ditch and the septic tank are exhausted, the flushing water facility is opened to flush the pig house, the slatted floor, the inverted sloping surface, the septic ditch and the septic tank. ;

The present invention will be further specifically described below with reference to the accompanying drawings:

The rain and sewage separation pig house according to the present invention, the pig drinking water collecting and discharging device is shown in Fig. 2, mainly consisting of an automatic drinking fountain 105 for pigs, a U-shaped water collecting chamber 103, a drainage pipe 101 and an external drainage ditch 201. The U-shaped water collecting chamber 103 is disposed directly below the water outlet 104 of the automatic drinking fountain 105 for pigs, and the water outlet 102 at the bottom of the U-shaped water collecting chamber 103 is connected to the drainage pipe 101, and the water outlet of the drainage pipe 101 is connected to the external drainage channel 201. .

The pig excrement and flushing water separation and collection device according to the present invention is shown in Fig. 1. The pig excrement and the flushing water separation and collecting device are mainly composed of a pig house and a slatted floor 202, an inverted eight-slope 205, and a dung. The ditch 206, the scraping manure system and the septic tank 304 are arranged, and the inverted splayed slope 205 and the clear dung ditch 206 are arranged under the slatted floor 202 of the pig house, and the inverted splayed sloping surface 205 is located on both sides of the septic dung 206, in the septic ditch A scraper 303 is provided in 206.

The schematic diagram of the scraping system according to the present invention is shown in FIG. 3, and the scraping system mainly comprises a driving device 301, a driving rope 302, a scraper 303, a sensor 304 and a scraping control system 305, and the scraping device according to the present invention As shown in FIG. 4, the scraper 303 is provided with a limit card 303A and a scraper 303B. The driving device 301 is connected to the scraper 303 via the driving rope 302. The sensor 304 is disposed at both ends of the clearing ditch 206, and the driving device is provided. 301 drives the scraper 303 along the bottom surface of the clearing ditch 206 through the traction rope 302, and moves back and forth from the highest end to the lowest end. When the scraper 303 moves to the side of the collecting tank 306, the limit card 303A catches the scraper 303B. The scraper 303B drives the excrement to move forward, so that the excrement finally collects in the septic tank 306. When the sensor 304 detects that the scraper 303 reaches both ends of the clearing ditch 206, the scraping control system 305 controls the scraping driving device 301 to stop running, and then reverses the operation after the delay, when the scraper 303 runs in the reverse direction. The infinite position card 303A is restricted, and the squeegee 303B is picked up by the traction rope 302, and the faeces and urine are not retrograde.

The principle of the source separation method of the large-scale pig farm of the present invention is as follows:

(1) The roof of the pig house blocks the rainwater, and the rainwater is drained through the drainage ditch 201 of the pig house in time to realize the separation of rain and sewage;

(2) When the pig drinks water, the water leaking from the automatic drinking fountain 105 and the pig's mouth is dropped into the U-shaped water collecting chamber 103, and is discharged to the external drainage ditch 201 through the drainage pipe 101 in time to make the pig The drinking water is separated from the feces and urine, and the pig drinking water is not mixed into the pig manure;

(3) The pig's daily excrement feces and urine are leaked from the slatted floor 202 and fall on the inverted sloping surface 205 or the clear sump 206, and the feces and urine falling on the inverted sloping surface 205 are in gravity. Under the action, naturally slide into the clear manure trench 206;

(4) The scraping system is started regularly every day, and the driving device 301 drives the scraper 303 along the bottom surface of the clearing ditch 206 through the driving rope 302 to move back and forth from the highest end to the lowest end, when the scraper 303 moves toward the collecting tank 306. The limit card 303A catches the scraper, the scraper 303B drives the excrement to move forward, and finally the excrement is collected into the septic tank 306. When the scraper 303 is operated in the opposite direction to the septic tank 306, the infinity card 303A is restricted, and the squeegee 303B is picked up by the drive cord 302, and the excrement is not retrograde. When the sensor 304 detects that the scraper 303 reaches both ends of the clearing ditch 206, the scraping control system 305 controls the scraping driving device 301 to stop running, and then reverses the operation after the delay;

(5) When there is a pig out, first start the scraping system, then start the sludge pump 307, exhaust the feces and urine in the collecting tank 306, and then control the water supply column. When the column is washed, the scraping system stops running, the flushing water flows into the clearing ditch 206 through the slatted floor 202, and finally flows into the collecting tank 306, and the sludge pump 307 is activated to flush the water in the collecting tank 306. The pump is pumped to the water treatment equipment to separate the pig manure and the flushing water, and the flushing water is not mixed into the excrement.

Claims

A large-scale pig farm source separation system characterized by: a rain and sewage diversion pig house, a pig drinking water collection and drainage device, and a pig excrement and a flushing water separation and collecting device; the rain and sewage diversion pig The house includes a rainwater roof and a side wall, and there is a rainwater drainage ditch outside the side wall; the pig drinking water collecting and discharging device is installed in the rainwater and sewage diversion pig house, and the pig drinking water collecting and discharging device is connected to the drainage port of the drainage device. At one end, the other end of the drainage pipe is connected to the rainwater drainage ditch outside the side wall of the rainwater and sewage diversion pig house; the pig excrement and the flushing water separation device are: installing a slatted floor in the rain and sewage digging pig house, below the slatted floor On the slope of the eight-character slope, the bottom end of the inverted eight-character slope is the clear manure ditch, and the scrap manure system is set in the clear manure ditch. The lowest end of the dung ditch is connected to the dung pond, and the input pipe of the sludge pump is set at the bottom of the dung pond. The output pipe of the sludge pump is connected to the pig excrement treatment device and the flushing water treatment device.
The large-scale pig farm pollutant source separation system according to claim 1, wherein the pig drinking water collecting device comprises an automatic drinking fountain for pigs, a U-shaped water collecting chamber, a drainage pipe and a rainwater drainage ditch. The pig uses an automatic drinking fountain installed on the side wall of the pig house. The U-shaped water collecting chamber is arranged directly below the water outlet of the automatic drinking fountain for pigs. The bottom of the U-shaped water collecting chamber has a drain port, and the drain port is connected to one end of the drain pipe to drain. The other end of the pipe connects the rain drain ditches outside the side wall of the pig house.
The large-scale pig farm pollutant source separation system according to claim 1, wherein the inverted eight-character slope is a surface smoothed slope.
The large-scale pig farm pollutant source separation system according to claim 1, wherein the clearing ditch is high at one end and low at the other end, and the high and low inclination is greater than 2 degrees, and the septic tank is connected with the clear ditch. The lowest end.
The large-scale pig farm source separation system according to claim 1, wherein the scraping system comprises a driving device, a sensor, a scraping control device, a driving rope and a scraping device, and the driving device is driven. The rope is connected to the scraper, the sensor is arranged at both ends of the clear ditch, and the scraper is reciprocating in the clear ditch.
The large-scale pig farm pollutant source separation system according to claim 1, wherein the septic tank is a funnel type.
The large-scale pig farm pollutant source separation system according to claim 1, characterized in that: The scraper is composed of a frame, a scraper, a limit card and a guide pulley. The scraper, the limit card and the guide pulley are fixed on the frame, and the two ends of the scraper are respectively connected to the two ends of the drive rope. The limit card is stuck on one side of the scraper, and the drive ropes at both ends of the connecting scraper respectively pass through the guide rope pulley on the rack.
A method for separating source of pollutants in a large-scale pig farm, characterized in that:

(1) Construction of rainwater and sewage diversion pig houses: The rainwater and sewage diversion pig houses include rainwater roofs and side walls, and there are rainwater drainage ditches outside the side walls. When it rains, it blocks the rainwater, so that the rainwater can be drained through the outdoor ditches in time. Realize the separation of the effluent and the scouring water in the rainwater and the pig house; reduce the water content in the faeces and rushing water, and reduce the difficulty of post-processing;

(2) Install the pig drinking water in the pig house to collect the efflux device: install the U-shaped water collecting chamber directly under the water outlet of the automatic drinking fountain for pigs, and connect the bottom drain hole of the U-shaped water collecting chamber to the outdoor ditch through the drainage pipe. , so that the pig drinking water is separated from the excrement and flushing water, reducing the water content in the excrement and the rushing water, and reducing the difficulty of post-processing;

(3) Install the slatted floor in the pig house, the bottom of the slatted floor is the inverted sloping slope, the bottom end of the inverted sloping slope is the clearing ditch, and the scraping dung system is set in the clear ditch, and the lowest end of the dung ditch is connected. The septic tank, the input pipe of the sludge pump is arranged at the bottom of the septic tank, and the output pipe of the sludge pump is connected with the pig manure treatment device and the rushing water treatment device;

(4) Every day, the excrement and urine of the pig's excrement are leaked from the slatted floor and fall on the inverted sloping slope or the clear ditch. The feces and urine falling on the inverted sloping surface are under the action of gravity. Sliding into the clear ditch;

(5) Start the scraping system at regular intervals every day. The driving device drives the scraper along the bottom of the clear ditch through the driving rope, moving back and forth from the highest end to the lowest end. When the scraper moves to the septic tank, the limit card is stuck. Scraper, scraper drives the excreta to move forward, and finally collects the excrement into the septic tank; when the scraper runs in the opposite direction of the septic tank, the limit card is not limited, and the scraper is picked up by the drive rope The excrement will not be retrograde; when the sensor detects that the scraper reaches the ends of the clearing ditch, the scraping control device controls the driving device of the scraping device to stop running, and then reverses after the delay;

(6) When there is a pig pighouse to clear the pig house, first start the scraping manure system, scrape the manure in the dung ditch into the septic tank, try to hang it clean, then start the sludge pump, and the sludge pump evacuates the septic tank. The feces and urine in the urine, so that the excrement does not mix into the water;

(7) In the above step (6), after the manure and urine in the septic ditch and the septic tank are exhausted, the rushing water facility is opened to rinse the pig house;

(8) When the column is washed, the scraping system stops running, and the flushing water flows into the clearing ditch through the slatted floor, and is sent to the septic tank to start the sludge pump to pump the flushing water in the septic tank to the rushing column. The water treatment equipment separates the pig manure and the flushing water, and the flushing water does not mix into the excrement.