CN111203029A - Livestock and poultry farm wastewater purification treatment system - Google Patents

Livestock and poultry farm wastewater purification treatment system Download PDF

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Publication number
CN111203029A
CN111203029A CN202010034141.0A CN202010034141A CN111203029A CN 111203029 A CN111203029 A CN 111203029A CN 202010034141 A CN202010034141 A CN 202010034141A CN 111203029 A CN111203029 A CN 111203029A
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China
Prior art keywords
water
wall
pipe
fixedly connected
livestock
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CN202010034141.0A
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Chinese (zh)
Inventor
申屠银珠
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Tonglu Hanghui Farm Co ltd
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Tonglu Hanghui Farm Co ltd
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Priority to CN202010034141.0A priority Critical patent/CN111203029A/en
Publication of CN111203029A publication Critical patent/CN111203029A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D36/00Filter circuits or combinations of filters with other separating devices
    • B01D36/04Combinations of filters with settling tanks

Abstract

The invention provides a livestock and poultry farm wastewater purification treatment system, and relates to the technical field of wastewater purification treatment. This waste water purification treatment system for livestock and poultry farm, including the waste water collecting pit, first pumping device is installed to one side of waste water collecting pit, one side at waste water collecting pit center is provided with the anti-blocking mechanism that draws water, first pumping device keeps away from the one end that the anti-blocking mechanism that draws water was provided with wet-dry separating mechanism, the one end that wet-dry separating mechanism was kept away from to first outlet pipe is installed and is precipitated sewage discharging mechanism, the one end that drainage mechanism was kept away from to second pumping device is provided with and filters precipitation mechanism, the bottom that filters precipitation mechanism is provided with the clean water basin. Draw water through the design and prevent stifled mechanism, do wet separating mechanism, deposit sewage discharging mechanism, drainage mechanism and filter and deposit the mechanism, can carry out quick effectual processing to the waste water of beasts and birds plant, the waste water after handling can be recycled, has practiced thrift a large amount of water resources, and work efficiency improves greatly, is worth wideling popularize.

Description

Livestock and poultry farm wastewater purification treatment system
Technical Field
The invention relates to the technical field of wastewater purification treatment, in particular to a livestock and poultry farm wastewater purification treatment system.
Background
The waste water treatment is to treat the waste water by physical, chemical and biological methods, purify the waste water, reduce pollution, recycle and reuse the waste water, and fully utilize water resources, wherein the waste water treatment method is generally divided into a physical treatment method, a chemical treatment method and a biological treatment method, the waste water treatment method for separating and recovering insoluble suspended pollutants (including oil films and oil beads) in the waste water by physical action can be divided into a gravity separation method, a centrifugal separation method, a screen filtration interception method and the like, and the treatment method based on a heat exchange principle also belongs to the physical treatment method; a wastewater treatment method for separating and removing pollutants in a dissolved and colloidal state in wastewater or converting the pollutants into harmless substances through chemical reaction and mass transfer, wherein in the chemical treatment method, a treatment unit based on chemical reaction generated by adding a medicament is as follows: coagulation, neutralization, redox, etc.; (ii) a The waste water is treated by biological contact oxidation, that is, the biological contact oxidation process is used to fill the filler in the biological reaction tank, and the oxygenated waste water is immersed in the filler and flows through the filler at a certain flow rate. The filler is covered with the biological film, the sewage is in wide contact with the biological film, organic pollutants in the sewage are removed under the action of metabolism of microorganisms on the biological film, and the sewage is purified.
Every day of livestock and poultry farm all has very big water consumption, also can produce a large amount of waste water waste residues every day, these waste water can produce the pollution of large tracts of land if not just discharge at will through handling, the traditional waste water treatment mode of livestock and poultry farm is mostly just carrying out simple wet-dry separation, then just directly discharge to the field after carrying out simple processing with waste water again, effectual waste water treatment not only can not be carried out to this kind of treatment mode, also can't accomplish the reuse of waste water simultaneously, a large amount of resources have been wasted, therefore, we have proposed a new livestock and poultry farm waste water purification treatment system.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a livestock and poultry farm wastewater purification treatment system, which solves the problems that most of the traditional wastewater treatment modes are simple in dry-wet separation, and then wastewater is directly discharged to the field after being simply treated, so that the treatment mode cannot effectively treat the wastewater, cannot recycle the wastewater and wastes a large amount of resources.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a livestock and poultry farm effluent purification processing system, includes the waste water collecting pit, and first pumping device is installed to one side of waste water collecting pit, one side at waste water collecting pit center is provided with the anti-blocking mechanism that draws water, first pumping device keeps away from the one end of drawing water anti-blocking mechanism and is provided with wet separating mechanism futilely, first outlet pipe is installed to wet separating mechanism's bottom futilely, wet separating mechanism's one end is kept away from to first outlet pipe is installed and is precipitated sewage discharging mechanism, the front end of precipitating sewage discharging mechanism is provided with drainage mechanism, drainage mechanism's one end fixedly connected with second pumping device, the one end that drainage mechanism was kept away from to second pumping device is provided with and filters sediment mechanism, the bottom of filtering sediment mechanism is provided with the clean water.
Preferably, the water pumping anti-blocking mechanism comprises a fixed cover, a waterproof motor is arranged in the center of the top of the fixed cover, the top of the fixed cover is fixedly connected with a waterproof protective shell corresponding to the waterproof motor, the center of the fixed cover is fixedly connected with a rotating shaft corresponding to the output shaft of the waterproof motor, a supporting bearing corresponding to the rotating shaft is arranged at the center of the top of the fixed cover, a plurality of connecting rings are fixedly connected at the bottom of the outer wall of the rotating shaft, a transverse stirring rod and a longitudinal stirring rod are respectively and fixedly connected at two sides of the outer wall of the connecting rings, the bottom of the outer wall of the fixed cover is provided with a water inlet net fence, the center of the inner wall of the fixed cover is provided with an anti-blocking filter screen, the water inlet has been seted up to one side of fixed cover outer wall, the drinking-water pipe corresponding with the water inlet is installed to one side of fixed cover outer wall, the one end and the first pumping device fixed connection of fixed cover are kept away from to the drinking-water pipe.
Preferably, wet separating mechanism includes the header tank futilely, the bottom of header tank is provided with the drainage basin, pipeline is installed to the bottom at header tank center, the spiral conveying auger is installed at pipeline's center, one side fixedly connected with motor cabinet of drainage basin outer wall, driving motor corresponding with pipeline is installed at the top of motor cabinet, driving motor's output shaft passes through shaft coupling fixed connection with spiral conveying auger, the inlet opening has been seted up to the one end at pipeline outer wall top, the center of drainage basin is provided with first drainage cover and second drainage cover respectively, the handle is all installed to the outer wall of first drainage cover and second drainage cover.
Preferably, a water filtering net cover corresponding to the water filtering pool is installed at one end of the bottom of the outer wall of the conveying pipeline, and sliding grooves corresponding to the first water filtering cover and the second water filtering cover are formed in the top of the inner wall of the water filtering pool.
Preferably, deposit sewage discharging mechanism includes the mount, a plurality of gunshot is installed at the center of mount, respectively first dead lever of fixedly connected with and second dead lever between the mount, it is a plurality of sealed lid is all provided with to the bottom of gunshot, it is a plurality of fixed pipe of front end fixedly connected with of gunshot outer wall, it is a plurality of the solenoid valve is all installed at the top of fixed pipe outer wall, it is a plurality of the equal fixedly connected with connecting seat in top of gunshot, it is a plurality of the equal fixedly connected with pipe in the top of connecting seat, it is a plurality of manual valve is installed to the front end of pipe in the water outer wall, it is a plurality of the connecting pipe is installed at the top of pipe in the water, the central fixedly connected with connector at connecting pipe top, first inlet tube is installed.
Preferably, drainage mechanism includes first collector pipe, and is a plurality of the front end of fixed pipe all is provided with first collector pipe, and is a plurality of first connector corresponding with fixed pipe is all installed to one side of first collector pipe outer wall, and is a plurality of the bottom of first collector pipe is provided with the second collector pipe, the outer wall of second collector pipe is provided with a plurality of second connectors corresponding with first collector pipe.
Preferably, filter and precipitate the mechanism and include the sedimentation tank, the top at sedimentation tank center is provided with the filter screen corresponding with second pumping device, the bottom at filter screen center sets up and sand layer, sand layer's top is provided with the filtration cotton, the top of crossing the filter cotton is provided with the fine stone filter layer, the top of fine stone filter layer is provided with the rubble filter layer.
Preferably, a third water pumping device is arranged between the filtering and settling mechanism and the clean water tank.
(III) advantageous effects
The invention provides a livestock and poultry farm wastewater purification treatment system. The method has the following beneficial effects:
1. this waste water purification treatment system of livestock and poultry farm through designing simple multiple mechanism, can accomplish the rapid treatment to waste water, both can carry out the wet-dry separation, also can carry out a lot of sediment to it simultaneously and filter, has guaranteed the filterable quality of waste water.
2. This waste water purification treatment system in livestock and poultry farm draws water through the design and prevents stifled mechanism, dry wet separating mechanism, deposit blowdown mechanism, drainage mechanism and filter and deposit the mechanism, can carry out quick effectual processing to the waste water in livestock and poultry farm, and waste water after the processing can be recycled, has practiced thrift a large amount of water resources, and work efficiency improves greatly, is worth wideling popularize.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view showing the internal structure of the wastewater collection tank according to the present invention;
FIG. 3 is a schematic structural view of the water pumping anti-blocking mechanism of the present invention;
FIG. 4 is a schematic diagram of the dry-wet separation mechanism of the present invention;
FIG. 5 is a schematic structural view of a precipitation sewage draining mechanism of the present invention;
FIG. 6 is a schematic view of the structure of the drainage mechanism of the present invention;
FIG. 7 is a schematic structural diagram of a filtering and settling mechanism according to the present invention.
Wherein, 1, a waste water collecting tank; 2. a first water pumping device; 3. a water pumping anti-blocking mechanism; 301. a fixed cover; 302. a waterproof motor; 303. a waterproof protective shell; 304. a rotating shaft; 305. a support bearing; 306. a connecting ring; 307. a transverse stirring rod; 308. a longitudinal stirring rod; 309. a water inlet net fence; 310. anti-blocking filter screens; 311. a water inlet; 312. a water pumping pipe; 4. a dry-wet separation mechanism; 401. a water collection tank; 402. a water filtering tank; 403. a delivery conduit; 404. a spiral conveying auger; 405. a motor base; 406. a drive motor; 407. a coupling; 408. a water inlet hole; 409. a first water filtering cover; 410. a second water filtering cover; 411. a handle; 412. a chute; 5. a first water outlet pipe; 6. a precipitation sewage draining mechanism; 601. a fixed mount; 602. a settling tank; 603. a first fixing lever; 604. a second fixing bar; 605. a sealing cover; 606. a fixed tube; 607. an electromagnetic valve; 608. a connecting seat; 609. a downpipe; 610. a manual valve; 611. a connecting pipe; 612. a connecting port; 613. a first water inlet pipe; 7. a drainage mechanism; 701. a first header pipe; 702. a first connector; 703. a second header pipe; 704. a second connector; 8. a second water pumping device; 9. a filtration and precipitation mechanism; 901. a sedimentation tank; 902. a filter screen; 903. a sand layer; 904. filtering cotton; 905. a fine stone filter layer; 906. a macadam filtration layer; 10. a third water pumping device; 11. and (4) a clear water tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 1-7, an embodiment of the present invention provides a livestock and poultry farm wastewater purification treatment system, which includes a wastewater collection tank 1, a first water pumping device 2 is installed on one side of the wastewater collection tank 1, a water pumping anti-blocking mechanism 3 is installed on one side of the center of the wastewater collection tank 1, a dry-wet separation mechanism 4 is installed on one end of the first water pumping device 2 away from the water pumping anti-blocking mechanism 3, a first water outlet pipe 5 is installed at the bottom of the dry-wet separation mechanism 4, a precipitation sewage discharge mechanism 6 is installed on one end of the first water outlet pipe 5 away from the dry-wet separation mechanism 4, a drainage mechanism 7 is installed at the front end of the precipitation sewage discharge mechanism 6, a second water pumping device 8 is fixedly connected to one end of the drainage mechanism 7, a filtration and precipitation mechanism 9 is installed at one end of the second water pumping device 8 away from.
The water pumping anti-blocking mechanism 3 comprises a fixed cover 301, a waterproof motor 302 is installed at the center of the top of the fixed cover 301, a waterproof protective shell 303 corresponding to the waterproof motor 302 is fixedly connected to the top of the fixed cover 301, a rotating shaft 304 corresponding to an output shaft of the waterproof motor 302 is fixedly connected to the center of the fixed cover 301, a support bearing 305 corresponding to the rotating shaft 304 is installed at the center of the top of the fixed cover 301, a plurality of connecting rings 306 are fixedly connected to the bottom of the outer wall of the rotating shaft 304, a transverse stirring rod 307 and a longitudinal stirring rod 308 are fixedly connected to two sides of the outer wall of the connecting rings 306 respectively, a water inlet net rail 309 is arranged at the bottom of the outer wall of the fixed cover 301, an anti-blocking filter screen 310 is installed at the center of the inner wall of the fixed cover 301, a water inlet 311 is arranged on one side of the outer wall of the fixed cover 301, a water pumping pipe 312 corresponding.
The dry-wet separation mechanism 4 comprises a water collection tank 401, a water filtering pool 402 is arranged at the bottom of the water collection tank 401, a conveying pipeline 403 is arranged at the bottom of the center of the water collection tank 401, a spiral conveying auger 404 is arranged at the center of the conveying pipeline 403, a motor base 405 is fixedly connected to one side of the outer wall of the water filtering pool 402, a driving motor 406 corresponding to the conveying pipeline 403 is arranged at the top of the motor base 405, an output shaft of the driving motor 406 is fixedly connected with the spiral conveying auger 404 through a coupler 407, a water inlet hole 408 is formed in one end of the top of the outer wall of the conveying pipeline 403, a first water filtering cover 409 and a second water filtering cover 410 are respectively arranged at the center of the water filtering pool 402, and handles 411 are respectively arranged on.
One end of the bottom of the outer wall of the delivery pipe 403 is provided with a water filtering net cover corresponding to the water filtering tank 402, and the top of the inner wall of the water filtering tank 402 is provided with a chute 412 corresponding to the first water filtering cover 409 and the second water filtering cover 410.
Deposit sewage discharging mechanism 6 and include mount 601, a plurality of guntanks 602 are installed at the center of mount 601, respectively first dead lever 603 of fixedly connected with and second dead lever 604 between the mount 601, the bottom of a plurality of guntanks 602 all is provided with sealed lid 605, the front end fixedly connected with of a plurality of guntanks 602 outer wall has a plurality of fixed pipes 606, solenoid valve 607 is all installed at the top of a plurality of fixed pipe 606 outer walls, the equal fixedly connected with connecting seat 608 in top of a plurality of guntanks 602, the equal fixedly connected with pipe in the water 609 in the top of a plurality of connecting seats 608, manual valve 610 is installed to the front end of a plurality of pipe in the water 609, connecting pipe 611 is installed at the top of a plurality of pipe in the water 609, the center fixedly connected with connector 612 at the top of connecting pipe 611, first inlet tube 613.
Drainage mechanism 7 includes first collector pipe 701, and the front end of a plurality of fixed pipes 606 all is provided with first collector pipe 701, and the first connector 702 corresponding with fixed pipe 606 is all installed to one side of a plurality of first collector pipe 701 outer walls, and the bottom of a plurality of first collector pipes 701 is provided with second collector pipe 703, and the outer wall of second collector pipe 703 is provided with a plurality of second connectors 704 corresponding with first collector pipe 701.
The filtering and precipitating mechanism 9 comprises a precipitating tank 901, a filter screen 902 corresponding to the second water pumping device 8 is arranged at the top of the center of the precipitating tank 901, a sand layer 903 is arranged at the bottom of the center of the filter screen 902, filter cotton 904 is arranged at the top of the sand layer 903, a fine stone filter layer 905 is arranged at the top of the filter cotton 904, and a broken stone filter layer 906 is arranged at the top of the fine stone filter layer 905.
A third water pumping device 10 is arranged between the filtering and settling mechanism 9 and the clean water tank 11.
The working principle is as follows: when the wastewater purification treatment system for the livestock and poultry farm is used, the wastewater collection pool 1 is used for collecting wastewater of the livestock and poultry farm, the wastewater in the wastewater collection pool 1 is pumped into the dry-wet separation mechanism 4 through the first pumping device 2, the bottom of the wastewater collection pool 1 is provided with the pumping anti-blocking mechanism 3, the pumping anti-blocking mechanism 3 drives the rotating shaft 304, the transverse stirring rod 307 and the longitudinal stirring rod 308 to carry out rotary stirring through the waterproof motor 302, so that waste residues in the wastewater are broken, the water pumping pipe 312 and the first pumping device 2 are prevented from being blocked by the wastewater, when the wastewater is pumped into the dry-wet separation mechanism 4 by the first pumping device 2, the spiral conveying auger 404 in the dry-wet separation mechanism 4 conveys the waste residues in the wastewater to a fixed area for stacking, the wastewater after dry-wet separation falls into the water filtering pool 402 through the water filtering net cover, the first water filtering cover 409 and the second water filtering cover 410 in the water filtering pool 402 can carry out preliminary filtering on the wastewater, filtered wastewater enters a plurality of settling tanks 602 in the settling and sewage draining mechanism 6 through a first water outlet pipe 5, the wastewater is precipitated by the settling tanks 602 and then discharged to a filtering and settling mechanism 9 through a drainage mechanism 7, a filter screen 902 is arranged in the filtering and settling mechanism 9, a plurality of layers of water purifying filter layers are arranged in the filter screen 902, the precipitated wastewater can be finally filtered by the plurality of layers of water purifying filter layers, the filtered wastewater is pumped into a water purifying tank 11 through a third water pumping device 10, and the filtered water in the water purifying tank 11 can be reused.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a livestock and poultry farm waste water purification treatment system, includes waste water collecting pit (1), its characterized in that: a first water pumping device (2) is arranged at one side of the wastewater collecting tank (1), a water pumping anti-blocking mechanism (3) is arranged at one side of the center of the wastewater collecting tank (1), a dry-wet separation mechanism (4) is arranged at one end of the first water pumping device (2) far away from the water pumping anti-blocking mechanism (3), a first water outlet pipe (5) is arranged at the bottom of the dry-wet separation mechanism (4), a precipitation and pollution discharge mechanism (6) is arranged at one end of the first water outlet pipe (5) far away from the dry-wet separation mechanism (4), the front end of the precipitation and pollution discharge mechanism (6) is provided with a drainage mechanism (7), one end of the drainage mechanism (7) is fixedly connected with a second water pumping device (8), one end of the second water pumping device (8) far away from the water drainage mechanism (7) is provided with a filtering and settling mechanism (9), and a water purifying tank (11) is arranged at the bottom of the filtering and settling mechanism (9).
2. The livestock and poultry farm wastewater purification treatment system according to claim 1, characterized in that: the water pumping anti-blocking mechanism (3) comprises a fixed cover (301), a waterproof motor (302) is installed at the center of the top of the fixed cover (301), a waterproof protective shell (303) corresponding to the waterproof motor (302) is fixedly connected to the top of the fixed cover (301), a rotating shaft (304) corresponding to the output shaft of the waterproof motor (302) is fixedly connected to the center of the fixed cover (301), a supporting bearing (305) corresponding to the rotating shaft (304) is installed at the center of the top of the fixed cover (301), a plurality of connecting rings (306) are fixedly connected to the bottom of the outer wall of the rotating shaft (304), a plurality of transverse stirring rods (307) and longitudinal stirring rods (308) are fixedly connected to the two sides of the outer wall of the connecting rings (306) respectively, a water inlet net fence (309) is arranged at the bottom of the outer wall of the fixed cover (301), and an anti-blocking filter screen (310) is, water inlet (311) have been seted up to one side of fixed cover (301) outer wall, drinking-water pipe (312) corresponding with water inlet (311) are installed to one side of fixed cover (301) outer wall, the one end and first pumping device (2) fixed connection of fixed cover (301) are kept away from in drinking-water pipe (312).
3. The livestock and poultry farm wastewater purification treatment system according to claim 1, characterized in that: the dry-wet separation mechanism (4) comprises a water collecting tank (401), a water filtering pool (402) is arranged at the bottom of the water collecting tank (401), a conveying pipeline (403) is arranged at the bottom of the center of the water collecting tank (401), a spiral conveying auger (404) is arranged at the center of the conveying pipeline (403), a motor base (405) is fixedly connected with one side of the outer wall of the water filtering pool (402), a driving motor (406) corresponding to the transmission pipeline (403) is installed at the top of the motor base (405), the output shaft of the driving motor (406) is fixedly connected with the spiral transmission auger (404) through a coupler (407), one end of the top of the outer wall of the conveying pipeline (403) is provided with a water inlet hole (408), the center of the water filtering pool (402) is respectively provided with a first water filtering cover (409) and a second water filtering cover (410), handles (411) are arranged on the outer walls of the first water filtering cover (409) and the second water filtering cover (410).
4. The livestock and poultry farm wastewater purification treatment system according to claim 3, characterized in that: and a water filtering net cover corresponding to the water filtering pool (402) is installed at one end of the bottom of the outer wall of the conveying pipeline (403), and a sliding groove (412) corresponding to the first water filtering cover (409) and the second water filtering cover (410) is formed in the top of the inner wall of the water filtering pool (402).
5. The livestock and poultry farm wastewater purification treatment system according to claim 1, characterized in that: the sedimentation and pollution discharge mechanism (6) comprises a fixing frame (601), a plurality of sedimentation tanks (602) are installed at the center of the fixing frame (601), a first fixing rod (603) and a second fixing rod (604) are fixedly connected between the fixing frames (601) respectively, a sealing cover (605) is arranged at the bottom of each sedimentation tank (602), a plurality of fixing pipes (606) are fixedly connected to the front end of the outer wall of each sedimentation tank (602), an electromagnetic valve (607) is installed at the top of the outer wall of each fixing pipe (606), a plurality of connecting seats (608) are fixedly connected to the top of each sedimentation tank (602), a plurality of downpipes (609) are fixedly connected to the top of each connecting seat (608), a manual valve (610) is installed at the front end of the outer wall of each downpipe (609), and a connecting pipe (611) is installed at the top of each downpipe (609), the center of the top of the connecting pipe (611) is fixedly connected with a connecting port (612), and a first water inlet pipe (613) is installed at the top of the connecting port (612).
6. The livestock and poultry farm wastewater purification treatment system according to claim 1 or 5, characterized in that: drainage mechanism (7) are including first collector pipe (701), and are a plurality of the front end of fixed pipe (606) all is provided with first collector pipe (701), and is a plurality of first connector (702) corresponding with fixed pipe (606) are all installed to one side of first collector pipe (701) outer wall, and are a plurality of the bottom of first collector pipe (701) is provided with second collector pipe (703), the outer wall of second collector pipe (703) is provided with a plurality of second connectors (704) corresponding with first collector pipe (701).
7. The livestock and poultry farm wastewater purification treatment system according to claim 1, characterized in that: the filtering and precipitating mechanism (9) comprises a precipitating tank (901), a filter screen (902) corresponding to the second water pumping device (8) is arranged at the top of the center of the precipitating tank (901), a sand layer (903) is arranged at the bottom of the center of the filter screen (902), filter cotton (904) is arranged at the top of the sand layer (903), a fine stone filter layer (905) is arranged at the top of the filter cotton (904), and a broken stone filter layer (906) is arranged at the top of the fine stone filter layer (905).
8. The livestock and poultry farm wastewater purification treatment system according to claim 1, characterized in that: and a third water pumping device (10) is arranged between the filtering and settling mechanism (9) and the water purifying tank (11).
CN202010034141.0A 2020-01-13 2020-01-13 Livestock and poultry farm wastewater purification treatment system Pending CN111203029A (en)

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