CN106698849A - Large-scale distributed treatment and reuse system and method for dairy farm milking hall wastewater - Google Patents
Large-scale distributed treatment and reuse system and method for dairy farm milking hall wastewater Download PDFInfo
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- CN106698849A CN106698849A CN201710033098.4A CN201710033098A CN106698849A CN 106698849 A CN106698849 A CN 106698849A CN 201710033098 A CN201710033098 A CN 201710033098A CN 106698849 A CN106698849 A CN 106698849A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
- C02F2103/327—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters from processes relating to the production of dairy products
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Abstract
The invention relates to a large-scale distributed treatment and reuse system and method of dairy farm milking hall wastewater. The large-scale distributed treatment and reuse system for dairy farm milking hall wastewater comprises a to-be-milked area, a milking area, a milk collecting area, a grill pool, a clean water tank, a regulating mixing tank and an A/O tank, wherein the ground surfaces of the milking area and the to-be-milked area are slopes and closed conduits are arranged around the ground surfaces of the milking area and the to-be-milked area and taken as sewage outlets, a cleaning water pipeline is arranged in the to-be-milked area, a disinfectant inlet pipeline and a disinfectant recovery pipeline are further arranged in the to-be-milked area, and a milk can is arranged in the milk collecting area. Different types of wastewater in the milking area are classified and summarized according to the application, respectively treated, and reasonably utilized to effectively lower the production amount of dairy farm wastewater so as to increase the wastewater reuse direction and achieve higher water-saving efficiency.
Description
Technical field
Animal farm wastewater processing technology field of the present invention, more particularly to a kind of large-scale milch cow farms milking parlour waste water distributing
Treatment and reuse method.
Background technology
In recent years, with the lifting of domestic dairy industry brand value, each Milk Processing Plant also exists to the quality requirement of raw material milk
Constantly lifting.High quality raw milk will not only have the newborn nutritional ingredient of standard, should also have total number of bacteria is low, somatic number is low,
The features such as without antibiotic, impurity, not water mixing.
Area of milking is generally divided into three regions according to function：Dai Ji areas, milk area and milk collection area.Dai Ji areas are by cow in milk
The region to be milked such as line up, it is necessary to clear up ox body；Area of milking is the area of milking of cow in milk, and milk cow respectively enters positioning
Region, is milked, and clean former positioning region after cleaning nipple；Milk collection area is mainly the ground of cleaning personnel process, and right
Milk container carries out stringency wash sterilization.
In order to effectively reduce the total number of bacteria in milk, it is necessary to carry out periodic cleaning to the milk flowing pipe road in area of milking.At present
The cleaning way that large-scale milch cow farms are generally used is CIP management systems (automatic cyclic cleaning management system), the management system
Safe operation, convenience, wash result reliability.And it is exactly the use of soda acid thimerosal to determine the running effect principal element.
In cleaning process, the pH value of acid will reach 1.5-3.5, and the pH value of alkali will reach 10.5-12.5, and acid ＆ alkali liquid concentration has to comply with
It is required that, it is necessary to periodic detection.Cleaning step is clear water → alkali lye+hot water → clear water → acid solution+warm water → clear water.
Scene measuring and calculating according to present inventor, the sewage quantity for disregarding area part of being milked in the cattle farm of table in part can reach
2-3 times of all sewage quantities in other regions.Through monitoring on the spot, milk cow fecaluria, summer are sprayed, rinsed for the cattle farm of 500
The waters such as colony house are 30m3/ d, and the day displacement at area one of milking just reaches 50m3。
Most of plant has no special classification and tupe to area of milking at this stage, and only fraction plant is because of excrement
The individually proposition treatment of soda acid thimerosal, most of water are still directly incorporated into follow-up treatment for cow manure system by dirty handling process demand selection
In system, this not only adds the scale and processing pressure of follow-up treatment for cow manure system, the dirty utilization of the excrement of plant is also set to become tired
It is difficult.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art part, there is provided a kind of large-scale milch cow farms milking parlour waste water
Separated practices and reclaiming system, whole system can reduce the use water in area of milking nearly 50%, greatly reduce follow-up excrement dirty
The pressure of processing system and investment.
The present invention realizes that the technical scheme of purpose is as follows：
A kind of large-scale milch cow farms milking parlour waste water separated practices and reclaiming system, it is characterised in that：Including Dai Ji areas,
Milk area, milk collection area, grid pond, clear water reserviors, regulation mixes pond, regulation and mixes pond, milk area and Dai Ji areas ground be slope and
Surrounding sets closed conduit, is exported as excrement is dirty, and Dai Ji areas are provided with cleaning waterpipe, Dai Ji areas also set up thimerosal inlet duct and
Thimerosal recovery channel, milk collection area sets milk container；
The dirty outlet connection grid pond of the excrement in Dai Ji areas and area of milking, the solid outlet after grid pond filtering turns solid sundries
Dui Fen areas are moved to, grid pond liquid sewage floss hole is connected to cistern, and cistern sets pipeline connection Dai Ji areas rinse water
Entrance；
Milk the thimerosal recovery channel connection collecting pit in area, collecting pit connection clear water reserviors, the water in clear water reserviors can return
With the thimerosal recovery channel in area of milking also sets up a bypass line, connects grid pond；
The milk container rinse water in milk collection area is input to regulation and mixes pond, then is input to A/O ponds, recently enters to MBR film process
Device, is being input to clear water reserviors；Described to mix pond in regulation and set supersonic generator, frequency is 20-50kHZ, 5-10 minutes/
Every time, the uniform wire packing that be arranged in parallel in A/O ponds, is radially coated with packing sheet on wire packing, is fixedly mounted with packing sheet efficiently
Carbon fibre silk, efficient 0.01 millimeter of diameter of carbon fibre silk.
And, the sewage of the cistern is emitted into subsequent treatment facility by soil-pipe road.
A kind of large-scale milch cow farms milking parlour waste water separated practices and reuse method, comprise the following steps：
(1) it is oblique by Dai Ji areas in the cattle farm milking parlour construction period, it is necessary to sewage is classified by engineering means
Slope and closed conduit are by sewage collecting；By the underground piping in area of milking will milk area rinse sewage converge with Dai Ji areas sewage, pass through
Grid pond is tentatively filtered, and solid portion delivers to Dui Fen areas and carries out that other are agricultural, and liquid portion enters cistern and waits reuse；
(2) the soda acid thimerosal in area of milking is divided into two parts according to flow is rinsed, and clear water is rinsed for the first time and is connected by pipeline
To grid pond, other flushing waters are entered in collecting pit with acid ＆ alkali liquid by particular conduit；
(3) the milk container flushing water in milk collection area passes through indoor open channel collection, is mixed in pond into regulation, enters small-sized after mixing
A/O ponds, COD and TN is removed by anaerobism, aerobic combination technique, is accomplished qualified discharge finally by MBR film processing systems and is received
Collect into clear water reserviors；
(4) Water circulation flushing is rinsed with treated milk container after soda acid thimerosal keeps in a period of time in collecting pit to treat
Area is squeezed, the milk cow for treating crowded area using the micro thimerosal after dilution carries out preliminarily pasteurized；
The milk container rinse water in the milk collection area is input to regulation and mixes pond, and mixing pond in regulation sets supersonic generator,
Frequency is 20-50kHZ, 5-10 minutes/every time, then A/O ponds are input to, recently enter to MBR membrane treatment appts, it is clear being input to
Pond；Described, the uniform wire packing that be arranged in parallel, is radially coated with packing sheet on wire packing in A/O ponds, and height is fixedly mounted with packing sheet
Effect carbon fibre silk, efficient 0.01 millimeter of diameter of carbon fibre silk, 2wt% lemons acid soak is used 4 hours being put into A/O ponds,
After the wire packing is used 3 months, soak again once, soak 4 hours.
Advantages and positive effects of the present invention are：
1st, the application carries out sorted generalization according to different types of sewage in area of milking, and processes respectively, rationally utilizes, effectively
Cattle farm sewage yield is reduced, increases reusing sewage direction, water saving efficiency is higher.
3rd, the application completes sewage classification treatment, by reuse by changing the trend of 4 class sewage in the milking parlour of cattle farm
Reduce part of contaminated water yield.
4th, the present invention is by being collected separately of soda acid thimerosal, reuse in area of milking, and reduction is milked the use of area's thimerosal
Amount, reduces sewage total amount.
5th, the present invention can save 20% rinse water by Dai Ji areas of being backwashed after individually recovery milk container flushing water and treatment.
6th, can not circulate and become to circulate：The application is used for the preliminary of ox body after soda acid thimerosal is diluted, is mixed
Sterilization, increases Dai Ji areas Disinfection Effect, ensures safety of milking.
7th, a small amount of circulation further becomes to deepen circulation：Milk Room sewage is used for the dilute of excrement dirt flushing pipe by conventional technique
Release, utilization ratio is relatively low, the present invention is classified milk Room sewage, be able to will first be rinsed inside the milk Room with the secondary sewage for utilizing,
Mixed sewage enters back into soil-pipe road, and than the use water that former tupe saves 50%, recycle-water recycles effect increase.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is A/O pool structure schematic diagrames；
Fig. 3 is packing sheet structural representation.
Specific embodiment
The present invention illustrates detailed process of the invention and step by implementation below, and all operations and data are
It is illustrative, it is not limited, it is impossible to which protection scope of the present invention is limited with this.
The application show that the sewage source of operation of milking mainly divides by analyzing the water source in Dai Ji areas, area of milking, milk collection area
It is following four classes：Dai Ji areas flushing water, area's flushing water of milking, soda acid thimerosal waste water, milk container flushing water.Found in investigation,
Because source is different, quantity difference causes this four classes water concentration to vary：
The water in Dai Ji areas is main to be made up of cow dung, ox urine and clear water, and concentration is higher, and amount is big；Area's flushing water of milking it is main by
A small amount of cow dung, ox urine, very small amount thimerosal and clear water composition, concentration are medium, measure medium；Soda acid thimerosal waste water is sterilized by soda acid
Liquid and clear water are constituted, and concentration is extremely low, and amount is few, but pH value change is greatly, and sewage harm is high；Milk container flushing water is by residual milk and clear water
Composition, concentration is relatively low, and amount is very big, but disposable.
A kind of large-scale milch cow farms milking parlour waste water separated practices and reclaiming system, including Dai Ji areas, area of milking, milk collection
Area, basket type grid pond, cistern, clear water reserviors, regulation mix pond and A/O ponds and (high-performance bio treatment are also referred to as in the application
Pond), milk area and Dai Ji areas ground are slope and surrounding sets closed conduit, are exported as excrement is dirty, and Dai Ji areas also set up underground piping
Thimerosal inlet duct and thimerosal recovery channel, milk collection area set milk container, and milk container is provided with cleaning device；
The dirty outlet connection basket type grid pond of the excrement in Dai Ji areas and area of milking, basket type grid pond carries out filtering net to excrement dirt
Change, solid sundries are transferred to Dui Fen areas by the solid outlet after the filtering of basket type grid pond, grid pond liquid sewage floss hole connects
Cistern is connected to, the water of cistern can set pipeline connection Dai Ji areas rinse water entrance with reuse in cistern, when returning
With number of times it is more when, the sewage of cistern is emitted into subsequent treatment facility by soil-pipe road, carries out the operation such as purifying.
Milk the thimerosal recovery channel connection collecting pit in area, collecting pit connection clear water reserviors, the water in clear water reserviors can return
With, by clear water reserviors connection Dai Ji areas rinse water entrance, the supply water, area of milking such as ground cleaning for providing Dai Ji areas
Thimerosal recovery channel also sets up a bypass line, connects basket type grid pond, and milk cow body is cleaned in the area that will milk first first
The water of (breast sterilization) is emitted into basket type grid pond.
The milk container rinse water in milk collection area is emitted into regulation and mixes pond, adjusts acid-base value of milk container rinse water etc., then arranges again
Put to A/O ponds (being also referred to as high-performance bio processing pond in the application), COD and TN is removed by anaerobism, aerobic combination technique, finally
It is emitted into MBR film processing systems (mbr films sewage disposal device) to accomplish qualified discharge and collect to clear water reserviors, waits to squeeze for providing
The ground cleaning in area etc. supplies water.
The application mixes pond and sets supersonic generator A1 in regulation, and frequency is 20-50kHZ, 5-10 minutes/each, is made
With being：1st, the particle (such as the protein body in remaining milk) of destruction water inlet macromolecular, can be follow-up anaerobic-aerobic microorganism
Carbon source and nitrogen source are provided, increase the utilizing status of follow-up microorganism；2nd, the entrance of other microorganisms is reduced, regulation is mixed in pond
Impurity bacterium carries out ultrasound destruction, prevents harmful microorganism to be flowed into A/O ponds (high-performance bio processing pond is also referred to as in the application),
It is at war with suppression with microorganism original in the pond.
The application is aerated A/O ponds (being also referred to as high-performance bio processing pond in the application) using jet aerator 1, is penetrated
Stream aerator is connected with jet-flow aeration pipe 2, and uniform be arrangeding in parallel is filled out in A/O ponds (high-performance bio processing pond is also referred to as in the application)
Material rope 3, is radially coated with packing sheet 4 (plastic material) on wire packing, efficient carbon fibre silk 5 is fixedly mounted with packing sheet, efficiently
Carbon fibre 0.01 millimeter of diameter of silk, 2wt% lemons are used being put into A/O ponds (high-performance bio processing pond is also referred to as in the application)
Acid soak 4 hours, after the wire packing is used 3 months, soaks once again, soaks 4 hours.
Efficient carbon fibre silk has advantages below：1. microorganism colonization is fast, and aging biomembrane is easy to fall off；2. stability,
It is required that filler can antiacid, alkali resistant, resistance to oxidation, not easily biological-degradable is non-aging etc.；3. oxygen-transfer efficiency is high；4. installation and maintenance side
Just；5. light weight, mechanical strength is big, while specific surface area is big, in 1500 ㎡/more than g, beneficial to microorganism attachment.
Efficient carbon fibre silk make microorganism be attached to above, gas specific surface area it is big, it is not easy to come off, there is no shadow to water quality
Ring and environment does not have any influence, 0.01 millimeter of (shortcoming of existing plastic wire of diameter：Surface smooths, it is not easy to adhere to, plastics
Inherently pollute).
The purpose of lemon acid soak is to form the macromolecular remaining to milk in rough efficient carbon fibre silk table face
Cleaning action, bigger molecule is not easy winding and be pasted onto efficient carbon fibre silk table face, influence the deposit efficiency of microorganism
And adhesion amount, improve biological treatment efficiency.
A kind of large-scale milch cow farms milking parlour waste water separated practices and reuse method, comprise the following steps：
(1) it is oblique by Dai Ji areas in the cattle farm milking parlour construction period, it is necessary to sewage is classified by engineering means
Slope and closed conduit are by sewage collecting；By the underground piping in area of milking will milk area rinse sewage converge with Dai Ji areas sewage, pass through
Grid pond is tentatively filtered, and solid portion delivers to Dui Fen areas and carries out that other are agricultural, and liquid portion enters cistern and waits reuse.
(2) the soda acid thimerosal in area of milking is divided into two parts according to flow is rinsed, and clear water is rinsed for the first time and is connected by pipeline
To grid pond, other flushing waters are entered in collecting pit with acid ＆ alkali liquid by particular conduit.
(3) the milk container flushing water in milk collection area passes through indoor open channel collection, is mixed in pond into regulation, enters small-sized after mixing
A/O ponds, COD and TN is removed by anaerobism, aerobic combination technique, is accomplished qualified discharge finally by MBR film processing systems and is received
Collect into clear water reserviors.
(4) Water circulation flushing is rinsed with treated milk container after soda acid thimerosal keeps in a period of time in collecting pit to treat
Area is squeezed, the milk cow for treating crowded area using the micro thimerosal after dilution carries out preliminarily pasteurized.
Regulation mixes pond：Inside sets reinforcing stirring system, including mixing pump, timing controller, and mixing pump requirement is than general
Logical mixing pump majority layer paddle, mainly prevents milk in regulation mixing pool surface conjunctiva, influences mixing effect.
Basket type grid pond：Because the major pollutants in Dai Ji areas are a small amount of cow dung and ox urine, it is not necessary to carry out solid-liquid
The equipment such as seperator, but easily blocked again using general grid, change difficult, therefore forward type basket grid is set.In water inlet
Pipeline is stretched out into wall 10-20cm, and basket type grid epimere has the draw-in groove grid can be fixed by pipeline.Basket type grating base
Grid is thinner, and top grid is thicker, and when the sewage with cow dung carries out basket type grid, solid is directly cut during preliminary filtering
Stay in hand basket, sewage enters follow-up pool body.Hand basket top has reinforcement that hand basket is stuck in pond, puts down reinforcement in cleaning
Move to hand basket and leave pipeline, propose cleaning solid.
A/O ponds (are also referred to as high-performance bio processing pond) in the application：Because the pollutant component in milk collection area is relatively simple, can give birth to
The property changed is high, can just be processed using biochemical apparatus in the case where biogas is not used.Jet-flow aeration technique is taken in pond, jet exposes
Mechanism of qi is connected on elevator pump, is drawn air into using negative pressure, is aerated, and is exactly anaerobic stages when stopping being aerated, finally
Reach the simultaneous positive effect that aerobic/anaerobic stage is carried out.A large amount of efficiently carbon fibre fillers are arranged in pond.
Claims (4)
1. a kind of large-scale milch cow farms milking parlour waste water separated practices and reclaiming system, it is characterised in that：Including Dai Ji areas, squeeze
Milk area, milk collection area, grid pond, clear water reserviors, regulation mix pond, A/O ponds, and milk area and Dai Ji areas ground are that slope and surrounding are set
Closed conduit, exports as excrement is dirty, and Dai Ji areas are provided with cleaning waterpipe, and Dai Ji areas also set up thimerosal inlet duct and thimerosal is returned
Closed tube road, milk collection area sets milk container；
Be transferred to for solid sundries by the dirty outlet connection grid pond of the excrement in Dai Ji areas and area of milking, the solid outlet after grid pond filtering
Dui Fen areas, grid pond liquid sewage floss hole is connected to cistern, and cistern sets pipeline connection Dai Ji area's cleaning waterpipes
Entrance；
Milk the thimerosal recovery channel connection collecting pit in area, collecting pit connection clear water reserviors, water in clear water reserviors can be squeezed with reuse
The thimerosal recovery channel in milk area also sets up a bypass line, connects grid pond；
The milk container rinse water in milk collection area is input to regulation and mixes pond, then is input to A/O ponds, recently enters to MBR membrane treatment appts,
It is being input to clear water reserviors；Described to mix pond in regulation and set supersonic generator, frequency is 20-50kHZ, 5-10 minute/each,
The uniform wire packing that be arranged in parallel, is radially coated with packing sheet on wire packing in A/O ponds, efficient carbon is fixedly mounted with packing sheet fine
Dimension silk, efficient 0.01 millimeter of diameter of carbon fibre silk.
2. large-scale milch cow farms milking parlour waste water separated practices according to claim 1 and reclaiming system, its feature exist
In：The sewage of the cistern is emitted into subsequent treatment facility by soil-pipe road.
3. large-scale milch cow farms milking parlour waste water separated practices according to claim 1 and reclaiming system, its feature exist
In：The A/O ponds are aerated using jet aerator, and jet aerator is connected with jet-flow aeration pipe.
4. a kind of large-scale milch cow farms milking parlour waste water separated practices and reuse method, it is characterised in that：Comprise the following steps：
(1) in the cattle farm milking parlour construction period, it is necessary to sewage is classified by engineering means, by Dai Ji areas slope and
Closed conduit is by sewage collecting；By the underground piping in area of milking will milk area rinse sewage converge with Dai Ji areas sewage, by grid
Pond is tentatively filtered, and solid portion delivers to Dui Fen areas and carries out that other are agricultural, and liquid portion enters cistern and waits reuse；
(2) the soda acid thimerosal in area of milking is divided into two parts according to flow is rinsed, and clear water is rinsed for the first time and is connected to lattice by pipeline
In grid pond, other flushing waters are entered in collecting pit with acid ＆ alkali liquid by particular conduit；
(3) the milk container flushing water in milk collection area passes through indoor open channel collection, is mixed in pond into regulation, and small-sized A/O is entered after mixing
Pond, by anaerobism, aerobic combination technique remove COD and TN, finally by MBR film processing systems accomplish qualified discharge and collect into
Clear water reserviors；
(4) rinse Water circulation with treated milk container after soda acid thimerosal keeps in a period of time in collecting pit and rinse Dai Ji areas,
The milk cow for treating crowded area using the micro thimerosal after dilution carries out preliminarily pasteurized；
The milk container rinse water in the milk collection area is input to regulation and mixes pond, and mixing pond in regulation sets supersonic generator, frequency
It is 20-50kHZ, 5-10 minutes/every time, then A/O ponds are input to, recently enter to MBR membrane treatment appts, it is being input to clear water
Pond；Described, the uniform wire packing that be arranged in parallel, is radially coated with packing sheet on wire packing in A/O ponds, is fixedly mounted with packing sheet efficiently
Carbon fibre silk, efficient 0.01 millimeter of diameter of carbon fibre silk, 2wt% lemons acid soak is used 4 hours being put into A/O ponds, when
The wire packing soaks once again using after 3 months, soaks 4 hours.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710033098.4A CN106698849B (en) | 2017-01-18 | 2017-01-18 | Distributed treatment and recycling system and method for wastewater of milking parlour of large-scale dairy farm |
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| CN201710033098.4A CN106698849B (en) | 2017-01-18 | 2017-01-18 | Distributed treatment and recycling system and method for wastewater of milking parlour of large-scale dairy farm |
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Cited By (6)
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| CN107197820A (en) * | 2017-05-28 | 2017-09-26 | 邹进彬 | Steer ration method |
| CN108432635A (en) * | 2018-03-29 | 2018-08-24 | 农业部环境保护科研监测所 | Squeeze storage milk facility flushing water categorised collection and cyclic utilization system |
| CN110577331A (en) * | 2019-09-25 | 2019-12-17 | 农业部沼气科学研究所 | Domestic sewage standard-reaching treatment method |
| CN110981073A (en) * | 2019-08-19 | 2020-04-10 | 农业农村部环境保护科研监测所 | Milk hall wastewater treatment system and method |
| CN111357656A (en) * | 2020-04-15 | 2020-07-03 | 广东广垦畜牧工程研究院有限公司 | Intelligent epidemic prevention pig farm |
| CN113716797A (en) * | 2021-08-23 | 2021-11-30 | 中国长江三峡集团有限公司 | In-situ purification system and method for mixed-drainage box culvert micro-polluted water body |
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| CN107197820A (en) * | 2017-05-28 | 2017-09-26 | 邹进彬 | Steer ration method |
| CN108432635A (en) * | 2018-03-29 | 2018-08-24 | 农业部环境保护科研监测所 | Squeeze storage milk facility flushing water categorised collection and cyclic utilization system |
| CN108432635B (en) * | 2018-03-29 | 2023-11-03 | 农业农村部环境保护科研监测所 | Flushing water classifying, collecting and recycling system for milking facility |
| CN110981073A (en) * | 2019-08-19 | 2020-04-10 | 农业农村部环境保护科研监测所 | Milk hall wastewater treatment system and method |
| CN110577331A (en) * | 2019-09-25 | 2019-12-17 | 农业部沼气科学研究所 | Domestic sewage standard-reaching treatment method |
| CN111357656A (en) * | 2020-04-15 | 2020-07-03 | 广东广垦畜牧工程研究院有限公司 | Intelligent epidemic prevention pig farm |
| CN113716797A (en) * | 2021-08-23 | 2021-11-30 | 中国长江三峡集团有限公司 | In-situ purification system and method for mixed-drainage box culvert micro-polluted water body |
| CN113716797B (en) * | 2021-08-23 | 2023-07-18 | 中国长江三峡集团有限公司 | In-situ purification system and method for micro-polluted water body of mixed-drainage box culvert |
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