CN210367363U - Wastewater treatment device for dairy farm breeding - Google Patents
Wastewater treatment device for dairy farm breeding Download PDFInfo
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- CN210367363U CN210367363U CN201921353340.7U CN201921353340U CN210367363U CN 210367363 U CN210367363 U CN 210367363U CN 201921353340 U CN201921353340 U CN 201921353340U CN 210367363 U CN210367363 U CN 210367363U
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Abstract
The utility model provides a dairy farm breeding wastewater treatment device, which belongs to the technical field of wastewater treatment, and comprises a grid well, a blow-off tank, an adjusting tank, a coagulating sedimentation tank, an anaerobic tank, a contact oxidation tank, a sedimentation tank and a biological filter tank which are sequentially connected with a wastewater outlet, wherein one end of the biological filter tank is sequentially connected with a disinfection tank I and a clean water tank I, and the other end of the biological filter tank is sequentially connected with an MBR membrane tank, a disinfection tank II and a clean water tank II; disinfection pond I and disinfection pond II all are connected with chlorine dioxide generator, through sludge union coupling sludge impoundment between coagulating sedimentation tank and the sedimentation tank, and the one end in sludge impoundment is passed through the supernatant back flow and is connected the equalizing basin, and the filter press is connected to the other end in sludge impoundment. The utility model discloses be used for retrieving and field irrigation behind the waste water treatment, mud outward transport compost, energy-concerving and environment-protective, waste water reuse realizes the waste water zero release, has solved prior art cattle farm waste water utilization and has rateed lowly, handles not thoroughly, easily appears secondary pollution scheduling problem.
Description
Technical Field
The utility model relates to a waste water treatment technical field, concretely relates to wastewater treatment device is bred in dairy farm.
Background
The dairy farm is an intensive livestock breeding farm, and the waste water of the dairy farm mainly comprises urine, partial excrement and flushing waste water of milking rooms. The wastewater has high organic matter concentration, more suspended matters, high ammonia nitrogen content and large odor. After flowing out, the water body is seriously eutrophicated and is also a medium for the spread of various diseases. The sewage treatment process comprises the following steps: firstly, the actual effect of the treatment process is considered, so that the removal effect of the treatment process meets the relevant requirements, and the effluent quality reaches the standard; secondly, the reliability and stability of the process should be considered. The change of the external conditions causes a certain change in the quality and quantity of water, so that a stable and reliable process is required for the system. On the premise of ensuring the standard, the problems of economic indexes, occupied area, operation management and the like of the process are considered, and the process with less investment, small occupied area and low operation cost is taken as a design guiding idea. The breeding wastewater of the dairy farm belongs to high-concentration organic wastewater which is difficult to treat, CODCr and NH3High content of-N, SS, and better biodegradability. The existing treatment device is not thorough enough in treatment, and can not fully recycle the treated wastewater, and some wastewater treatment devices directly discharge the treated wastewater into rivers to cause secondary pollution.
Patent publication No. CN206814570U discloses a distributed processing of scale dairy farm milking parlor waste water and recycling system, including treating the room of milking, milking parlor, receive the room of milking, grid pond, clean water basin, equalizing basin, milking parlor and treat that milking parlor ground is the slope and sets up the closed conduit all around, as the dirty export of excrement, treat that the room of milking is provided with the washing water pipeline, treat that the room of milking still sets up antiseptic solution inlet pipeline and antiseptic solution recovery pipeline, receive the room of milking and set up the milk jar. The system classifies and summarizes sewage of different types in the milking parlour and respectively treats the sewage, the structure is complex, the treatment of the excrement is not thorough, and the solid sludge is not effectively treated.
Disclosure of Invention
In view of this, the utility model provides a wastewater treatment device is bred in dairy farm is used for retrieving and field irrigation after with waste water treatment, and mud outward transport compost is energy-concerving and environment-protective, and waste water reuse realizes the waste water zero release, has solved prior art dairy farm waste water utilization and has rateed lowly, handles not thoroughly, easily appears secondary pollution scheduling problem.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is:
a dairy farm culture wastewater treatment device comprises a grating well, a blow-off tank, an adjusting tank, a coagulating sedimentation tank, an anaerobic tank, a contact oxidation tank, a sedimentation tank and a biological filter tank which are sequentially connected with a wastewater outlet, wherein one end of the biological filter tank is sequentially connected with a disinfection tank I and a clean water tank I, and the other end of the biological filter tank is sequentially connected with an MBR membrane tank, a disinfection tank II and a clean water tank II; the disinfection pond I and the disinfection pond II are both connected with a chlorine dioxide generator, a sludge pond is connected between the coagulating sedimentation pond and the sedimentation pond through a sludge pipe, one end of the sludge pond is connected with the adjusting tank through a supernatant return pipe, and the other end of the sludge pond is connected with a filter press.
Furthermore, the air stripping tank, the contact oxidation tank, the biological filter tank and the MBR membrane tank are all connected with air blowers.
Further, the coagulating sedimentation tank is connected with a medicine adding tank through a medicine adding pipeline.
Furthermore, a sewage return pipeline is connected between the anaerobic tank and the contact oxidation tank.
Further, the filter press is a belt filter press.
The utility model has the advantages that: collecting the wastewater obtained after solid-liquid separation of the cattle raising urine and the cattle manure, the wastewater of a milking room and the boiler circulating wastewater, then feeding the collected wastewater into a grid well to remove larger suspended matters in water, then feeding the wastewater into a stripping tank, removing most of ammonia nitrogen, and then feeding the wastewater into a mixing tankRemoving most suspended matters in water by a coagulation sedimentation tank, adjusting the water quality and water quantity by entering an adjusting tank, automatically flowing into an anaerobic tank by gravity, removing partial organic matters in water by using anaerobic bacteria, and ammoniating nitrogen-containing pollutants to free ammonia (NH)3、NH4 +) Then the wastewater enters a contact oxidation pond, and NH is nitrified by autotrophic bacteria under the condition of sufficient oxygen supply3-N（NH4 +) Oxidation to NO3 -Returning to the anaerobic pool under reflux control, and reacting NO under the denitrification action of heterotrophic bacteria3 -Reduced to molecular nitrogen (N)2) Complete C, N, O cycle in ecology. After the wastewater is precipitated in the sedimentation tank, the wastewater enters the biological filter to remove most pollutants in the wastewater, part of the effluent of the biological filter enters the disinfection tank I, enters the clean water tank I for temporary storage after disinfection and sterilization for agricultural irrigation, and the rest enters the MBR tank for advanced treatment, and finally enters the clean water tank II for storage after disinfection and sterilization treatment in the disinfection tank II for recycling. Sludge discharged from the coagulating sedimentation tank and the sedimentation tank enters a sludge tank, the sludge is composted or transported outside for disposal after being concentrated, and supernatant liquid flows back to the regulating tank.
The utility model discloses handle waste water after solid-liquid separation, the waste water of milking room and boiler circulation waste water etc. with the urine of raising cattle in the milk cow factory together, labour saving and time saving to be used for retrieving and field irrigation after with waste water treatment, mud outward transport compost, energy-concerving and environment-protective, waste water reuse realizes the waste water zero release, has solved prior art cattle farm waste water utilization and has rateed lowly, handles not thoroughly, easily appears secondary pollution scheduling problem.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a flow chart of wastewater treatment in a dairy farm of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following description will be made with reference to fig. 1 of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived from the description of the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.
Example one
As shown in fig. 1, the embodiment provides a dairy farm cultivation wastewater treatment device, which comprises a grating well 1, a blow-off tank 10, an adjusting tank 2, a coagulating sedimentation tank 11, an anaerobic tank 12, a contact oxidation tank 13, a sedimentation tank 6 and a biological filter tank 8 which are sequentially connected with a wastewater outlet, wherein one end of the biological filter tank 8 is sequentially connected with a disinfection tank i 16 and a clean water tank i 18, and the other end of the biological filter tank 8 is sequentially connected with an MBR membrane tank 17, a disinfection tank ii 7 and a clean water tank ii 5; the disinfection pond I16 and the disinfection pond II 7 are both connected with a chlorine dioxide generator 9, a sludge pond 14 is connected between the coagulating sedimentation pond 11 and the sedimentation pond 6 through a sludge pipe, one end of the sludge pond 14 is connected with the adjusting pond 2 through a supernatant return pipe, and the other end of the sludge pond 14 is connected with a filter press 15.
The air blower 3 is connected with the air stripping tank 10, the contact oxidation tank 13, the biological filter 8 and the MBR membrane tank 17.
The coagulating sedimentation tank 11 is connected with a medicine adding tank 4 through a medicine adding pipeline.
A sewage return pipeline is connected between the anaerobic tank 12 and the contact oxidation tank 13.
The filter press 15 is a belt filter press.
Wherein, the grid well 1: the grating removes floating suspended matters with the diameter of more than 5mm in the sewage so as to reduce the treatment load of the subsequent water treatment process and play a role in protecting water pumps, pipelines, instruments and the like.
And (3) adjusting the pool 2: the sewage flow or concentration varies greatly day and night due to the unevenness of the water consumption and the impurities discharged into the sewage. These problems cause great troubles in the treatment operation, making it difficult to maintain the normal operation of the sewage treatment facility. Therefore, the sewage needs to be introduced into the regulating tank 2 for uniform regulation treatment, so that the water quantity and the water quality are relatively stable, and a stable and optimized operating condition can be provided for a subsequent water treatment system.
The regulating reservoir 2 mainly has the following functions:
1. the buffering capacity for sewage treatment load is provided, and the sudden change of the load of a treatment system is prevented;
2. the fluctuation of the sewage flow entering the treatment system is reduced, the sewage flow is stable when the sewage is treated, and the load of a subsequent sewage treatment unit is reduced;
3. in the aspects of controlling the pH value of the sewage and stabilizing the water quality, the self neutralization capacity of different sewages can be utilized;
4. when the sewage discharge is stopped temporarily, the sewage can still be continuously input into the treatment system, and the normal operation of the system is ensured.
And (3) blowing-off pool 10: under the alkaline condition, a large amount of air is contacted with the wastewater, and the ammonia nitrogen in the wastewater in an ionic state is converted into free ammonia to be blown out, so that the aim of removing the ammonia nitrogen in the wastewater is fulfilled. The air stripping method has the advantages of ammonia nitrogen removal rate of over 85 percent, simple process and simple and convenient operation.
A coagulating sedimentation tank 11: the coagulation sedimentation tank 11 is one of sedimentation tanks in wastewater treatment. Because suspended matters in the cattle raising wastewater are difficult to settle by gravity. Therefore, by adding some medicaments (usually coagulant and coagulant aid) into water, the particles which are difficult to precipitate in the water can be polymerized with each other to form colloid, and then combined with impurities in the water body to form larger floccules. The flocculating constituent has strong adsorption capacity, can adsorb suspended matters, and can adsorb partial bacteria and soluble substances. The flocs sink down by increasing their volume through adsorption. Compared with other physical and chemical methods, the coagulating sedimentation process has the advantages of good effluent quality, stable and reliable process operation, economy, practicality, simple and convenient operation and the like.
The anaerobic tank 12: anaerobic biological treatment technology, because of its good removal, higher reaction rate and better adaptability to toxic substances, and more importantly because it does not need to provide a large amount of energy for oxygen transfer compared to aerobic biological treatment of wastewater.
The contact oxidation pond 13 is characterized in that ① packing has large specific surface area, the oxygen filling condition in the pond is good, the biological quantity per unit volume in the contact oxidation pond is higher than that of an activated sludge aeration pond and a biological filter pond, so the contact oxidation pond can achieve higher volume load, ② has convenient operation and management because a part of microorganisms are fixed and grown on the surface of the packing, ③ has strong applicability to sudden change of water quality and water quantity because water flow is completely mixed because the fixation quantity in the pond is large, and ④ has high sludge concentration and F/M of the contact oxidation pond is still kept at a certain level when the organic load is higher, so the sludge yield can be equal to or lower than that of the activated sludge method.
And (6) a sedimentation tank: the waste water is discharged into the sedimentation tank from top to bottom through a water inlet pipe arranged at the center of the sedimentation tank 6, an umbrella-shaped baffle is arranged below an inlet of the water, so that the waste water is uniformly distributed in the sedimentation tank and slowly rises along the whole section of the sedimentation tank. The suspended matters are settled under the action of gravity and enter a cone-shaped sludge hopper at the bottom of the tank, and clarified water is discharged from an overflow weir around the upper end of the tank. A scum trough and a baffle plate can be arranged in front of the overflow weir to ensure the quality of the effluent.
And (3) biological filter 8: the biological filter tank is a high-efficiency water treatment process for purifying organic wastewater by mainly using a biological film attached to a carrier (commonly called as a filler). The biomembrane process with the characteristics of the activated sludge process has the advantages of the activated sludge process and the biomembrane process, and has the characteristics of high efficiency, energy conservation, small occupied area, impact load resistance, convenient operation and management and the like. The biological treatment is a link after physicochemical treatment and is also an important link in the whole circulation flow, harmful substances such as ammonia nitrogen, nitrous acid, nitrate, hydrogen sulfide and the like are removed, and the biological treatment plays a key role in further treatment of water quality in the subsequent flow.
The disinfection tank I16: the disinfectant is added into the sewage through the chlorine dioxide generator 9 to be mixed with the sewage, and pathogenic microorganisms in the treated sewage are killed.
Clean water basin I18: the effluent sterilized by the disinfection tank I16 enters the clean water tank I for temporary storage and is used as farmland irrigation water.
MBR membrane tank 17: the Membrane Bioreactor (MBR) technology is a new technology combining biological treatment technology and membrane separation technology, and can efficiently carry out solid-liquid separation to obtain directly used stable reclaimed water. But also can maintain high-concentration microorganism biomass in the biological tank, the process has less excess sludge, extremely effectively removes ammonia nitrogen, the suspended matters and turbidity of the effluent are close to zero, bacteria and viruses in the effluent are greatly removed, the energy consumption is low, and the occupied area is small.
The membrane biological treatment technology is applied to the aspect of wastewater recycling and has the following characteristics:
(1) the method can efficiently carry out solid-liquid separation, separate suspended substances, colloidal substances, microbial flora lost by biological units and purified water in the wastewater, has simple separation process, small floor area and good effluent quality, and can be recycled generally without three-stage treatment.
(2) The biomass in the biological treatment unit can be maintained at high concentration, the volume load is greatly improved, and meanwhile, the high efficiency of membrane separation greatly shortens the hydraulic retention time of the treatment unit and correspondingly reduces the occupied area of the bioreactor.
(3) The loss of various microbial flora can be prevented, which is beneficial to the growth of bacteria (nitrobacteria and the like) with slow growth speed, thereby leading various metabolic processes in the system to be carried out smoothly.
(4) The retention time of some macromolecular organic matters difficult to degrade is prolonged, which is beneficial to the decomposition of the organic matters.
(5) In the long-term operation process, the membrane is used as a filter medium, the water passing amount of the membrane is gradually reduced along with the increase of the operation time, the reduction of the membrane flux can be slowed down by effective back washing and chemical cleaning, and the effective service life of the MBR system is maintained.
(6) The MBR technology is applied to urban sewage treatment, and can realize full-automatic operation management due to simple process and convenient operation.
And (7) a disinfection tank II: the cattle raising sewage contains a large amount of bacteria, fecal escherichia coli and the like, and can cause harm to the environment without being disinfected and recycled. The disinfection tank II 7 receives chlorine dioxide water solution generated by a chlorine dioxide generator and provides a place for disinfection.
And (3) clean water pool II 5: and the water sterilized by the sterilizing pond II 7 enters the clean water pond II 5 for storage and is used as a recycled water pond.
Example two
As shown in fig. 1, the dairy farm cultivation wastewater treatment device described in this embodiment is an improvement on the first embodiment: in this embodiment, all be equipped with dive mixer in equalizing basin 2 and the anaerobism pond 12, the model: QJB 740/260. A vertical stirrer is arranged in the stripping tank 10. One side of the anaerobic tank 12 and one side of the contact oxidation tank 13 are both provided with biological filler brackets, and biological fillers are stored in the biological filler brackets. And a sewage lifting pump is arranged in the adjusting tank 2 and used for conveying sewage to the coagulating sedimentation tank 11, and the sewage pump adopts a DBY type anti-blocking diaphragm pump. The pump has strong sludge discharge capacity and no blockage, and can effectively pass solid particles with the diameter of 10 mm.
The utility model discloses to breed ox urine and cow dung waste water after solid-liquid separation, milking waste water and boiler circulation waste water after collecting, adopt "grid + equalizing basin + blow off pond + coagulating sedimentation + anaerobism + good oxygen + sedimentation tank + biological filter + disinfection" technology to make and handle the back and go out water and reach the farming and irritate standard, the partial advanced treatment system that gets into again of must retrieval and utilization, through MBR system, disinfection and sterilization handle back retrieval and utilization, safety, environmental protection. The removal effect of the main contaminants was tested in table 1 below.
TABLE 1 Effect of removing major contaminants
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The utility model provides a wastewater treatment device is bred in dairy farm which characterized in that: the device comprises a grid well, a blowing-off tank, an adjusting tank, a coagulating sedimentation tank, an anaerobic tank, a contact oxidation tank, a sedimentation tank and a biological filter tank which are sequentially connected with a wastewater outlet, wherein one end of the biological filter tank is sequentially connected with a disinfection tank I and a clean water tank I, and the other end of the biological filter tank is sequentially connected with an MBR membrane tank, a disinfection tank II and a clean water tank II; the disinfection pond I and the disinfection pond II are both connected with a chlorine dioxide generator, a sludge pond is connected between the coagulating sedimentation pond and the sedimentation pond through a sludge pipe, one end of the sludge pond is connected with the adjusting tank through a supernatant return pipe, and the other end of the sludge pond is connected with a filter press.
2. The dairy farm aquaculture wastewater treatment plant of claim 1, wherein: the air stripping tank, the contact oxidation tank, the biological filter and the MBR membrane tank are all connected with an air blower.
3. The dairy farm aquaculture wastewater treatment plant of claim 1, wherein: the coagulating sedimentation tank is connected with a dosing tank through a dosing pipeline.
4. The dairy farm aquaculture wastewater treatment plant of claim 1, wherein: and a sewage return pipeline is connected between the anaerobic tank and the contact oxidation tank.
5. The dairy farm aquaculture wastewater treatment plant of claim 1, wherein: the filter press is a belt filter press.
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| CN201921353340.7U CN210367363U (en) | 2019-08-20 | 2019-08-20 | Wastewater treatment device for dairy farm breeding |
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| CN201921353340.7U CN210367363U (en) | 2019-08-20 | 2019-08-20 | Wastewater treatment device for dairy farm breeding |
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| CN210367363U true CN210367363U (en) | 2020-04-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115180769A (en) * | 2022-07-14 | 2022-10-14 | 宁夏鑫新顺达农牧有限公司 | Pollutant treatment system for dairy cattle breeding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115180769A (en) * | 2022-07-14 | 2022-10-14 | 宁夏鑫新顺达农牧有限公司 | Pollutant treatment system for dairy cattle breeding |
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