CN105923922A - Pig farm sewage treatment system and pig farm sewage treatment method - Google Patents

Pig farm sewage treatment system and pig farm sewage treatment method Download PDF

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Publication number
CN105923922A
CN105923922A CN201610467249.2A CN201610467249A CN105923922A CN 105923922 A CN105923922 A CN 105923922A CN 201610467249 A CN201610467249 A CN 201610467249A CN 105923922 A CN105923922 A CN 105923922A
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China
Prior art keywords
flocculation
tank
pig farm
treatment
water
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Pending
Application number
CN201610467249.2A
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Chinese (zh)
Inventor
齐自成
李福欣
韩梦龙
高亮
孙立刚
褚斌
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Shandong Academy of Agricultural Machinery Sciences
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Shandong Academy of Agricultural Machinery Sciences
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Priority to CN201610467249.2A priority Critical patent/CN105923922A/en
Publication of CN105923922A publication Critical patent/CN105923922A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/16Nitrogen compounds, e.g. ammonia
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/20Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/08Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/10Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/14NH3-N
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/42Liquid level
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/34Biological treatment of water, waste water, or sewage characterised by the microorganisms used

Abstract

The invention provides a pig farm sewage treatment system and a pig farm sewage treatment method, and can solve the problems of high one-time investment, high operation cost, low treatment efficiency and low automation degree of pig farm sewage treatment. The pig farm sewage treatment system comprises a regulating tank, an aeration treatment tank, a primary sedimentation tank, a secondary sedimentation tank, a tertiary sedimentation tank, a flocculation treatment device and a filtering device that are connected to one another in turn, wherein the aeration treatment tank is communicated with the primary sedimentation tank through a pipeline provided with an electronic control valve, the primary sedimentation tank is communicated with the secondary sedimentation tank through a pipeline provided with an electronic control valve, the secondary sedimentation tank is communicated with the tertiary sedimentation tank through a pipeline provided with an electronic control valve, and all the electronic control valves are connected with an electric cabinet. The pig farm sewage treatment method comprises the following steps: sewage from a pig farm enters the regulating tank, the aeration treatment tank, the primary sedimentation tank, the secondary sedimentation tank, the tertiary sedimentation tank, the flocculation treatment device and the filtering device, and treated sewage reaches a discharging standard.

Description

Pig farm wastewater treatment system and processing method
Technical field
The present invention relates to a kind of sewage disposal system and processing method, be specifically related to a kind of Pig farm wastewater treatment system and processing method.
Background technology
Fast development along with livestock breeding industry, Pig farm wastewater innocuity treatment problem has obtained increasing attention, if Pig farm wastewater arbitrarily discharges this is because leave, surface water, subsoil water and soil can be produced severe contamination, the health of the serious threat mankind.Existing Pig farm wastewater processing equipment and processing method one-time investment is big, operating cost is high, treatment effeciency is low, automaticity is low, seriously constrains the healthy and rapid development of livestock breeding industry.
Summary of the invention
The present invention provides a kind of Pig farm wastewater treatment system and processing method, this processing equipment and processing method can solve Pig farm wastewater and processes the problem that one-time investment is big, operating cost is high, treatment effeciency is low, automaticity is low.
The present invention is by the following technical solutions:
A kind of Pig farm wastewater treatment system, including the regulating reservoir being sequentially connected with, Air Exposure pond, first stage precipitation tank, second-level settling pond, three grades of sedimentation tanks, flocculation treatment device and filter plant, passing through the pipeline communication with electrically-controlled valve between Air Exposure pond and first stage precipitation tank, between first stage precipitation tank and second-level settling pond and between second-level settling pond and three grades of sedimentation tanks, electrically-controlled valve is all connected with electric cabinet.
Above-mentioned Pig farm wastewater treatment system, flocculation treatment device includes flocculation treatment tank and pharmacy jar, and flocculation treatment tank connects pharmacy jar by flocculation pipe and self priming pump, and flocculation treatment tank is also connected with soil pipe, and soil pipe docks with the immersible pump being arranged in three grades of sedimentation tanks.
Above-mentioned Pig farm wastewater treatment system, flocculation treatment tank includes tank body, tank body is provided with the shaft driven by stirring motor, on shaft, vertical distribution has multiple stirring vane, stirring vane includes that be connected with shaft installs set and be arranged on two blades that installation puts, two blades overlap axial angle at 45 °, with installing between two panels blade at an angle of 90.
Above-mentioned Pig farm wastewater treatment system, tank base connects flocculation discharge pipe one end, and flocculation discharge pipe connects drain valve, and the flocculation discharge pipe other end connects screw pump entrance, and screw pump outlet connects filter plant through filter tube.
Above-mentioned Pig farm wastewater treatment system, is provided with medicament liquidometer, is provided with flocculation liquidometer in flocculation treatment tank in pharmacy jar.
Above-mentioned Pig farm wastewater treatment system, is equipped with aerated conduit bottom Air Exposure pond, aerated conduit is provided with aerator, and outside side, Air Exposure pond arranges the roots blower communicated therewith by pipeline.
Above-mentioned Pig farm wastewater treatment system, filter plant is filter press or rotary drum vacuum filter.
A kind of Pig farm wastewater processing method, comprises the following steps:
(1) Pig farm wastewater initially enters regulating reservoir, uniform water quality and quantity, obtains regulation and processes water, is provided with regulation immersible pump in regulating reservoir;
(2) regulation is processed water under the lifting of regulation immersible pump, enters aeration and biological process pond by riser tubing, roots blower carries out being spaced aeration by aerated conduit and aerator, and add aerobe microbial inoculum, by the biological metabolism degradation of organic substances of aerobe microbial inoculum self, obtain aeration and biological and process water;
(3) aeration and biological processes water and sequentially enters first stage precipitation tank, second-level settling pond and three grades of pond precipitations, obtains precipitation process water after precipitation;
(4) precipitation process water enters flocculation treatment tank by soil pipe under the lifting of immersible pump, wastewater level is through flocculation liquidometer detection, when in flocculation treatment tank, liquid level adds precipitation process water in flocculation treatment tank less than immersible pump when setting liquid level by soil pipe from three grades of sedimentation tanks, arrive and stop when setting liquid level, self priming pump adds flocculant in flocculation treatment tank by flocculation pipe from pharmacy jar simultaneously, stirring motor drives shaft and stirring vane to rotate and makes flocculant quickly be sufficiently mixed with sewage, produce flocculated suspension thing in mixed process;
(5) float and water enter screw pump through drain valve by flocculation discharge pipe, enter filter plant by filter tube, through filter plant solid-liquid separation, the sewage qualified discharge after process under the pressure effect of screw pump.
Operation principle of the present invention:
nullPig farm wastewater enters regulating reservoir,Uniformly water quality and quantity,Then under the lifting of immersible pump, enter aeration and biological by pipeline and process pond,Roots blower carries out being spaced aeration by aerated conduit and aerator,The aerobe microbial inoculum the added biological metabolism degradation of organic substances by self,After biological treatment, sewage controls to enter first stage precipitation tank by electrically-controlled valve、Second-level settling pond and three grades of pond precipitations,By precipitation,Sewage enters flocculation treatment tank by pipeline under the lifting of immersible pump,Wastewater level detects through liquidometer,When in flocculation treatment tank, liquid level adds sewage in flocculation treatment tank less than immersible pump when setting liquid level by pipeline from three grades of sedimentation tanks,Arrive and stop when setting liquid level,Self priming pump adds a certain amount of flocculant in flocculation treatment tank by pipeline from pharmacy jar simultaneously,Stirring motor drives shaft and stirring vane rotation to make flocculant quickly be sufficiently mixed with sewage,Mixed process produces flocculated suspension thing,Float and water enter screw pump through drain valve by pipeline,Filter plant is entered by pipeline under the pressure effect of screw pump,Through filter plant solid-liquid separation,Sewage qualified discharge after process.
The invention has the beneficial effects as follows: 1. each device of electric control cabinet control system work, whole Pig farm wastewater processing procedure operating in a key, treatment effeciency is high, safe and reliable;2. processing method is simple, and handling process is reasonable, and sewage disposal operating cost is low;3. whole system compact conformation, floor space is little, installed power is little, one-time investment is little.
Accompanying drawing explanation
The invention will be further described below in conjunction with the accompanying drawings:
Fig. 1 is Pig farm wastewater processing equipment structural representation;
Fig. 2 is flocculation treatment jar structure schematic diagram;
Fig. 3 is stirring vane structural representation;
Fig. 4 is process flow figure.
nullIn figure: 1. flocculation treatment tank,1-1. stirring motor,1-2. tank body,1-3. stirring vane,1-3-1. installs set,1-3-2. blade,1-4. shaft,1-5. drain valve,1-6. bracing strut,2. flocculation liquidometer,3. self priming pump,4. flocculation pipe,5. medicament liquidometer,6. pharmacy jar,7. electric cabinet,8. flocculation discharge pipe,9. screw pump,10. filter tube,11. filter plants,12. regulating reservoirs,13. roots blowers,14. regulation immersible pumps,15. riser tubings,16. aeration and biologicals process pond,17. aerated conduits,18. aerators,19. first electrically-controlled valve,20. first stage precipitation tank,21. second electrically-controlled valve,22. second-level settling ponds,23. the 3rd electrically-controlled valve,24. three grades of sedimentation tanks,25. immersible pumps,26. soil pipes.
Detailed description of the invention
For making the purpose of the present invention, technical scheme and advantage clearer, develop simultaneously embodiment referring to the drawings, and the present invention is described in more detail.
As shown in Figure 1, a kind of Pig farm wastewater treatment system, including the regulating reservoir 12 being sequentially connected with, Air Exposure pond 16, first stage precipitation tank 20, second-level settling pond 22, three grades of sedimentation tanks 24, flocculation treatment device and filter plant 11, by the pipeline communication with the first electrically-controlled valve 19 between Air Exposure pond 16 and first stage precipitation tank 20, by the pipeline communication with the second electrically-controlled valve 21 between first stage precipitation tank 20 and second-level settling pond 22, by the pipeline communication with the 3rd electrically-controlled valve 23 between second-level settling pond 22 and three grades of sedimentation tanks 24, first electrically-controlled valve 19, second electrically-controlled valve 21 and the 3rd electrically-controlled valve 23 are all connected with electric cabinet 7.
As shown in Figure 2, flocculation treatment device includes flocculation treatment tank 1 and pharmacy jar 6, flocculation treatment tank 1 connects pharmacy jar 6 by flocculation pipe 4 and self priming pump 3, and flocculation treatment tank 1 is also connected with soil pipe 26, and soil pipe 26 docks with the immersible pump 25 being arranged in three grades of sedimentation tanks 24.
As shown in Figures 3 and 4, flocculation treatment tank 1 bag tank body 1-2, tank body 1-2 is provided with the shaft 1-4 driven by stirring motor 1-1, on shaft 1-4, vertical distribution has multiple stirring vane 1-3, shaft 1-4 end is fixed on bottom tank body 1-2 by bracing strut 1-6, stirring vane 1-3 includes that be connected with shaft 1-4 installs set 1-3-2 and be arranged on two the blade 1-3-1 installed on set 1-3-2, two blade 1-3-1 overlap the axial angle at 45 ° of 1-3-2, with installing between two panels blade 1-3-1 at an angle of 90.
In the present embodiment, connecting flocculation discharge pipe 8 one end bottom tank body 1-2, flocculation discharge pipe 8 connects drain valve 1-5, flocculation discharge pipe 8 other end connects screw pump 9 entrance, and screw pump 9 exports and connects filter plant 11 through filter tube 10.
In the present embodiment, pharmacy jar 6 is provided with medicament liquidometer 5, when the dosage that flocculates is less than when setting liquid level, and alarm adds flocculant;Flocculation treatment tank 1 being provided with flocculation liquidometer 2, when sewage level is less than when setting liquid level, and self priming pump 3 starts working, from three grades of sedimentation tanks 24, extracting sewage in flocculation treatment tank 1, until setting liquid level.
In the present embodiment, being equipped with aerated conduit 17 bottom Air Exposure pond 16, aerated conduit 17 is provided with aerator 18, outside side, Air Exposure pond 16 arranges the roots blower 13 communicated therewith by pipeline.
In the present embodiment, filter plant 11 is filter press or rotary drum vacuum filter.
A kind of Pig farm wastewater processing method, comprises the following steps:
(1) Pig farm wastewater initially enters regulating reservoir 12, uniform water quality and quantity, obtains regulation and processes water, is provided with regulation immersible pump 14 in regulating reservoir 12;
(2) regulation is processed water under the lifting of regulation immersible pump 14, enters aeration and biological process pond 16 by riser tubing 15, roots blower 13 carries out being spaced aeration by aerated conduit 17 and aerator 18, and add aerobe microbial inoculum, by the biological metabolism degradation of organic substances of aerobe microbial inoculum self, obtain aeration and biological and process water;
(3) aeration and biological processes water and sequentially enters first stage precipitation tank 20, second-level settling pond 22 and three grades of pond precipitations 24, obtains precipitation process water after precipitation;
(4) precipitation process water enters flocculation treatment tank 1 by soil pipe 26 under the lifting of immersible pump 25, wastewater level detects through flocculation liquidometer 2, when in flocculation treatment tank 1, liquid level adds precipitation process water in flocculation treatment tank 1 from three grades of sedimentation tanks 24 less than immersible pump 25 when setting liquid level by soil pipe 26, arrive and stop when setting liquid level, self priming pump 3 adds flocculant in flocculation treatment tank 1 by flocculation pipe 4 from pharmacy jar 6 simultaneously, stirring motor 1-1 drives shaft 1-4 and stirring vane 1-3 rotation to make flocculant quickly be sufficiently mixed with sewage, mixed process produces flocculated suspension thing;
(5) float and water enter screw pump 9 through drain valve 1-5 by flocculation discharge pipe 8, enter filter plant 11, through filter plant 11 solid-liquid separation, the sewage qualified discharge after process by filter tube 10 under the pressure effect of screw pump 9.
After utilizing present system and disposal methods after testing, water quality reaches following index: COD 100mg/l, BOD5 50mg/l, SS 50mg/l, ammonia nitrogen 80mg/l.
Above-mentioned detailed description of the invention is only the concrete case of the present invention, is not the restriction that the present invention makees other form, and any those skilled in the art are changed possibly also with the technology contents of the disclosure above or are modified as the equivalent implementations of equivalent variations.But every without departing from the technology of the present invention principle on the premise of, any simple modification, equivalent variations and remodeling embodiment of above made according to the technical spirit of the present invention, all should fall into the scope of patent protection of the present invention.

Claims (8)

1. a Pig farm wastewater treatment system, it is characterized in that: the regulating reservoir (12) that includes being sequentially connected with, Air Exposure pond (16), first stage precipitation tank (20), second-level settling pond (22), three grades of sedimentation tanks (24), flocculation treatment device and filter plant (11), passing through the pipeline communication with electrically-controlled valve between Air Exposure pond (16) and first stage precipitation tank (20), between first stage precipitation tank (20) and second-level settling pond (22) and between second-level settling pond (22) and three grades of sedimentation tanks (24), electrically-controlled valve is all connected with electric cabinet (7).
2. Pig farm wastewater treatment system as claimed in claim 1, it is characterized in that: flocculation treatment device includes flocculation treatment tank (1) and pharmacy jar (6), flocculation treatment tank (1) connects pharmacy jar (6) by flocculation pipe (4) and self priming pump (3), flocculation treatment tank (1) is also connected with soil pipe (26), and soil pipe (26) docks with the immersible pump (25) being arranged in three grades of sedimentation tanks (24).
3. Pig farm wastewater treatment system as claimed in claim 2, it is characterized in that: flocculation treatment tank (1) includes tank body (1-2), tank body (1-2) is provided with the shaft (1-4) driven by stirring motor (1-1), the upper vertical distribution of shaft (1-4) has multiple stirring vane (1-3), stirring vane (1-3) includes the installation set (1-3-2) being connected with shaft (1-4) and is arranged on two blades (1-3-1) installed on set (1-3-2), two blades (1-3-1) overlap (1-3-2) axial angle at 45 ° with installing, between two panels blade (1-3-1) at an angle of 90.
4. Pig farm wastewater treatment system as claimed in claim 1, it is characterized in that: tank body (1-2) bottom connects flocculation discharge pipe (8) one end, drain valve (1-5) is connected in flocculation discharge pipe (8), flocculation discharge pipe (8) other end connects screw pump (9) entrance, and screw pump (9) outlet is through filter tube (10) connection filter plant (11).
5. Pig farm wastewater treatment system as claimed in claim 2, it is characterised in that: pharmacy jar (6) is provided with medicament liquidometer (5), flocculation treatment tank (1) is provided with flocculation liquidometer (2).
6. Pig farm wastewater treatment system as claimed in claim 1, it is characterized in that: Air Exposure pond (16) bottom is equipped with aerated conduit (17), being provided with aerator (18) on aerated conduit (17), Air Exposure pond (16) outside side arranges the roots blower (13) communicated therewith by pipeline.
7. Pig farm wastewater treatment system as described in any one of Claims 1-4, it is characterised in that: filter plant (11) is filter press or rotary drum vacuum filter.
8. a Pig farm wastewater processing method, it is characterised in that comprise the following steps:
(1) Pig farm wastewater initially enters regulating reservoir (12), uniform water quality and quantity, obtains regulation and processes water, is provided with regulation immersible pump (14) in regulating reservoir;
(2) regulation is processed water under the lifting of regulation immersible pump (14), enters aeration and biological process pond (16) by riser tubing (15), roots blower (13) carries out being spaced aeration by aerated conduit (17) and aerator (18), and add aerobe microbial inoculum, by the biological metabolism degradation of organic substances of aerobe microbial inoculum self, obtain aeration and biological and process water;
(3) aeration and biological processes water and sequentially enters first stage precipitation tank (20), second-level settling pond (22) and three grades of ponds precipitation (24), obtains precipitation process water after precipitation;
(4) precipitation process water enters flocculation treatment tank (1) by soil pipe (26) under the lifting of immersible pump (25), wastewater level is through flocculation liquidometer (2) detection, when in flocculation treatment tank (1), liquid level adds precipitation process water in flocculation treatment tank (1) less than immersible pump (25) when setting liquid level by soil pipe (26) from three grades of sedimentation tanks (24), arrive and stop when setting liquid level, self priming pump (3) adds flocculant in flocculation treatment tank (1) by flocculation pipe (4) from pharmacy jar (6) simultaneously, stirring motor (1-1) drives shaft (1-4) and stirring vane (1-3) rotation to make flocculant quickly be sufficiently mixed with sewage, mixed process produces flocculated suspension thing;
(5) float and water enter screw pump (9) through drain valve (1-5) by flocculation discharge pipe (8), filter plant (11) is entered by filter tube (10) under the pressure effect of screw pump (9), through filter plant (11) solid-liquid separation, the sewage qualified discharge after process.
CN201610467249.2A 2016-06-24 2016-06-24 Pig farm sewage treatment system and pig farm sewage treatment method Pending CN105923922A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610467249.2A CN105923922A (en) 2016-06-24 2016-06-24 Pig farm sewage treatment system and pig farm sewage treatment method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610467249.2A CN105923922A (en) 2016-06-24 2016-06-24 Pig farm sewage treatment system and pig farm sewage treatment method

Publications (1)

Publication Number Publication Date
CN105923922A true CN105923922A (en) 2016-09-07

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203768173U (en) * 2013-10-16 2014-08-13 广东温氏食品集团股份有限公司 Livestock and poultry farm sewage phosphorous removal device
CN204737860U (en) * 2015-06-05 2015-11-04 重庆泰克环保工程设备有限公司 Effluent disposal system is bred to beasts and birds
CN204939197U (en) * 2015-08-05 2016-01-06 天紫再生资源加工(天津)有限公司 A kind of Sewage treatment systems based on PLC
CN205953761U (en) * 2016-06-24 2017-02-15 山东省农业机械科学研究院 Pig farm sewage treatment system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203768173U (en) * 2013-10-16 2014-08-13 广东温氏食品集团股份有限公司 Livestock and poultry farm sewage phosphorous removal device
CN204737860U (en) * 2015-06-05 2015-11-04 重庆泰克环保工程设备有限公司 Effluent disposal system is bred to beasts and birds
CN204939197U (en) * 2015-08-05 2016-01-06 天紫再生资源加工(天津)有限公司 A kind of Sewage treatment systems based on PLC
CN205953761U (en) * 2016-06-24 2017-02-15 山东省农业机械科学研究院 Pig farm sewage treatment system

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Application publication date: 20160907

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