CN107759009A - A kind of livestock breeding wastewater handling process - Google Patents
A kind of livestock breeding wastewater handling process Download PDFInfo
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- CN107759009A CN107759009A CN201710937694.5A CN201710937694A CN107759009A CN 107759009 A CN107759009 A CN 107759009A CN 201710937694 A CN201710937694 A CN 201710937694A CN 107759009 A CN107759009 A CN 107759009A
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- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
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Abstract
This patent is related to field of waste water treatment, specifically disclose a kind of livestock breeding wastewater handling process, the floor space of this method device simple to operate, each is small, and can connect each device according to the handling process of livestock breeding wastewater, realizes the integrated treatment unit to livestock breeding wastewater；Ammonia nitrogen in livestock breeding wastewater can be reclaimed to the raw material as nitrogenous product simultaneously, all solid wastes, the sludge of biochemical section all make ecological fertilizer of the organic biofertilizer for crops by effective, harmless biofermentation.This programme can be to be recycled to the COD in livestock breeding wastewater, while livestock breeding wastewater is handled, and allows it to reach discharge standard.
Description
Technical field
The invention belongs to field of waste water treatment, and in particular to a kind of livestock breeding wastewater handling process.
Background technology
With the improvement of people's living standards, China's livestock and poultry breeding industry is developed rapidly.National livestock and poultry breeding industry discharge
COD up to 1268.26 ten thousand tons, account for the 96% of agricultural sources total emission volumn；Total nitrogen and total phosphorus emission are 102.48 ten thousand tons
With 16.04 ten thousand tons, account for the 38% and 56% of agricultural sources total emission volumn respectively.Livestock breeding wastewater is dirty after industrial wastewater, life
Turn into the third-largest pollution sources after water.Therefore, how to dispose to scale Pollution from livestock and poultry thing turns into urgent problem to be solved.
Livestock breeding wastewater has four big features：1. high COD, its COD concentration reaches：5000~2000mg/L；2. high ammonia nitrogen,
Concentration is at least in more than 600mg/L；3. high suspended matter, concentration is in 5000~12000mg/L；Remove 4. colourity is difficult, also contain in addition
There are antibiotic, heavy metal etc..It, which endangers, substantially five aspects：1. compared with traditional peasant household's dispersion raising, large-scale cultivation has
The feeding manner of livestock and poultry is improved beneficial to improvement, feeding efficiency and technology, pest resistance and managerial skills is improved, greatly improves production
Efficiency and feed conversion rate, feeding cost is saved, increase economic benefit, but as the expansion of cultivation scale, feces of livestock and poultry rinse
Water increases, and Pollutants in Wastewater content is high, and treatment measures are insufficient or environment can be damaged using improper.2. the rich battalion of water body
Fosterization and soil pollution：Livestock and poultry are relatively low to the absorption rate of institute's feeding protein feeds, 50-70% nitrogen in feed, phosphorus with
Excrement, urine excrete, therefore contain substantial amounts of nitrogen phosphorus compound in its excrement.Undressed excrement washes away through water to be discharged into
In river or surface water body, water table are entered by rainwash and soil filtration and accumulated in soil, nitrogen phosphorus compound
Nitrate and phosphate are converted into, causes Measures of Algae in Water Body excessive multiplication and soil hardening, water environment and soil are caused seriously
Harm.3. atmosphere pollution：Livestock and poultry cultivation produces a large amount of excrement, gives out containing NH3, H2S, methyl indol, aliphatic aldehydes, sulphur
The gas of the odorants such as alcohol, amine, easily human body is stimulated to smell god, endangering the gases such as respiratory tract, CO2, CH4 can also cause greenhouse to imitate
Should.4. biological pollution：In 200 kinds currently reported " infectious diseases common to human beings and animals ", wherein have 25 kinds by what pig was infected, illness
Or the recessive live pig led troops can discharge various pathogens, virus and parasitic ovum, such as anthrax, brucellosis with excrement.Not
Livestock breeding wastewater through processing, which is discharged into river course, to cause source water to pollute, and mankind's drinking-water causes to infect the prevalence of disease.⑤
Heavy metal pollution：Efficient economic profit is pursued, raiser is added into feed containing the heavy metals such as copper, arsenic, mercury, zinc, selenium member
The growth-promoting additive of element, the trace element containing arsanilic acid and nitre hydroxy benzenes arsenic acid etc. is often fed for enhancing livestock and poultry resistance
Feed.The multiple element is absorbed without pig body and excreted into surrounding enviroment such as water body, soil, or through food chain
Bioconcentration enters human body, threatens human health.
Existing cultivating wastewater purification mainly has Three models：Returning to the field pattern, ecology tupe, at bioreactor
Reason pattern.1. returning to the field pattern：It is a kind of traditional treatment method, waste water is directly discharged into farmland to improve the fertility of soil, carried
The yield of high crops, but its determination, which is exactly the land resource that must have abundance, goes to carry and consumes.According to statistics, 10,000
Waste water at least needs 90 hectares of soil to go to consume caused by the pig farm of live pig, and China is the country having a large population and a few land, also
Field mode treatment livestock breeding wastewater is very limited, and is dealt with improperly, can also pollute the expansion in source.2. at ecology
Reason pattern is using modes such as artificial swamp, stabilization ponds, is handled using the synergy between microorganism and plant, the pattern
Advantage is also a lot, but shortcoming is it is also obvious that such as floor space is big, season and temperature change have a great influence to treatment effect,
If dealt with improperly, it will result in the release of pollutant and form new pollution.3. bioreactor for treatment pattern.Which bag
Many methods are included, such as:Separation of solid and liquid-anaerobic-aerobic, guanite method-anaerobic-aerobic etc.；The reactor of Anaerobic Treatment is also very
It is more, such as：UASB (up-flow anaerobic sludge blanket), CSTR (being thoroughly mixed anaerobic reactor), ABR (anaerobic baffled reactor) etc.；
And conventional aerobic reactor has：Oxidation ditch, SBR (sequencing batch active sludge), biofilter etc..Bioreactor for treatment mould
No matter which kind of method used, the technique of which kind combination of reactors, all there is the problem of different in formula, as cost is high, control at present
Difficulty is big etc., and anaerobic and aerobic are in face of four big feature of livestock breeding wastewater the problem of, are all that comparison is difficult, more important
Be that livestock breeding wastewater is the very low waste water of carbon-nitrogen ratio, directly affects the Nitrogen/Phosphorus Removal of biochemical treatment.
The content of the invention
The invention is intended to provide a kind of livestock breeding wastewater handling process, to be returned to the COD in livestock breeding wastewater
Receive and utilize, while livestock breeding wastewater is handled, allow it to reach discharge standard.
In order to achieve the above object, base case of the invention is as follows：A kind of livestock breeding wastewater handling process, including with
Lower step：
Step a) is pre-processed：The livestock breeding wastewater in biogas slurry pond is extracted, separation of solid and liquid is carried out to livestock breeding wastewater, obtained
The solids obtained forms solid A；
Step b) ammonia nitrogens reclaim：The livestock breeding wastewater of outflow enters one-level regulating reservoir in step a), and regulating reservoir is by livestock and poultry
The pH value of breeding wastewater is adjusted between 8.2~8.6, and livestock breeding wastewater stands 3~6H in one-level regulating reservoir；Then will
Livestock breeding wastewater upper liquid in one-level regulating reservoir is passed through in sand filter, and then livestock breeding wastewater exits into from sand filter
Into ammonia nitrogen retracting device, and one-level regulating reservoir in sand filter with being precipitated as solid B；
Step c) Anaerobic Treatments：The livestock breeding wastewater that step b) flows out from ammonia nitrogen retracting device enters Anaerobic Treatment
In device, and livestock breeding wastewater stops 12~16H in anaerobic processing device；Then livestock breeding wastewater fills from Anaerobic Treatment
Put middle outflow and enter back into anoxic pond, and livestock breeding wastewater stops 8~12H in anoxic pond；And anaerobic processing device and anoxic
Solid C is precipitated as in pond；
Step d) Aerobic Process for Treatment；The water flowed out in step c) from anoxic pond is entered in aerobic treatment device, and livestock and poultry
Breeding wastewater stops 6~8H in aerobic treatment device；Then the livestock breeding wastewater flowed out from aerobic treatment device enters again
Enter in aerobic sedimentation tank, then by the supernatant collection of livestock breeding wastewater in aerobic sedimentation tank to collecting-tank；And aerobic precipitation
The muddy water of precipitation in pond forms solid D；
Step e) advanced treatings：D) livestock breeding wastewater flowed out in step collecting-tank is passed into potent processing unit,
Then advanced treating is carried out to livestock breeding wastewater, water outlet is after precipitating, sterilizing, qualified discharge；
Step f) fixed-end forces：Solid A, solid B, solid C and solid D are fermented, solid A after fermentation, solid B,
Solid C and solid D turns into organic biofertilizer.
The principle and its advantage of base case：1st, in step a), the mode of separation of solid and liquid can be adopted by livestock breeding wastewater
The suspensions such as existing excrement, swill reduce by more than 90%, while the clean energy resource such as caused methane gives in biogas slurry pond
Recycle；And caused solid A can also serve as the raw material of organic biofertilizer.
2nd, in step b), the pH of livestock breeding wastewater can be adjusted for one-level regulating reservoir, can make in livestock breeding wastewater
Suspension be easier to settle, reduce the processing load of subsequent step mesophytization degraded, and can guarantee that in waste water 80% with
Upper ammonia nitrogen exists in the form of NH4+, and then is easy to decompose the ammonia nitrogen in livestock breeding wastewater；Sand filter can allow livestock and poultry
Impurity in breeding wastewater is further filtered, and is easy to reclaim solid B；Livestock breeding wastewater energy after being filtered simultaneously
Enough enter in ammonia nitrogen retracting device, ammonia nitrogen retracting device can largely be reclaimed to the ammonia nitrogen in livestock breeding wastewater, drop
Nitrogen source content in low livestock breeding wastewater, and then C/N ratios and C/P ratio are quickly improved, seek biochemical section
Foster ratio is more suitable for the growth of microorganism, and uses enhancement microbiological technology and further treatment technique, more ensure that water outlet water
Matter is up to standard.
3rd, in step c), Anaerobic Treatment can be carried out to livestock breeding wastewater, passes through anaerobic denitrifying, Anammox and one
Serial anaerobic biochemical reaction, hardly degraded organic substance is converted into easily biodegradable organicses, and removes part COD in waste water, ammonia nitrogen, again
Metal etc.；The solid that can be allowed in livestock breeding wastewater waste water simultaneously further precipitates, and is easy to carry out recycling to solid C.
4th, step d)：After livestock breeding wastewater is entered in aerobic sedimentation tank, the impurity that contains in livestock breeding wastewater
The bottom of aerobic sedimentation tank can be deposited in, is now easy to collecting-tank to be collected the supernatant of livestock breeding wastewater, realization pair
The purification of livestock breeding wastewater；Being deposited in the solid D of aerobic sedimentation tank bottom simultaneously can be collected as production organic-biological
The raw material of fertilizer.
5th, in step e), livestock breeding wastewater can be further processed, moreover it is possible to which livestock breeding wastewater is disappeared
Poison, water is up to standard after making the processing of livestock breeding wastewater, and now livestock breeding wastewater can be directly discharged into nature.
6th, it is the fermentation process to solid A, solid B, solid C and solid D in step f), allows solid A, solid B, solid C
Turn into the organic biofertilizer that can directly apply with solid D, realize the recovery profit to solid A, solid B, solid C and solid D
With.
In summary, the floor space of this method device simple to operate, each is small, and can be according to livestock breeding wastewater
Handling process connects each device, realizes the integrated treatment unit to livestock breeding wastewater；Livestock and poultry cultivation can be given up simultaneously
Ammonia nitrogen in water reclaims the raw material as nitrogenous product, and all solid wastes, the sludge of biochemical section all pass through effective, harmless metaplasia thing
The ecological fertilizer that organic biofertilizer is used for crops is made in fermentation, realizes and recovery profit is carried out to the COD in livestock breeding wastewater
With, while livestock breeding wastewater is handled, allow it to reach discharge standard.
Further, in the step b), the material for carrying out pH value in regulating reservoir to livestock breeding wastewater is nontoxic, has and help
Solidifying effect and alkalescence or acidic materials soluble in water.During livestock breeding wastewater progress pH value is adjusted, alkalescence
Or acidic materials can condense the impurity in livestock breeding wastewater, it is easy to discharge the impurity in livestock breeding wastewater；Simultaneously
Allow livestock breeding wastewater to have the enough time rested in sand filter, can further reduce suspension and a huge sum of money in waste water
Category.
Further, there is uniform water distributor in the pond face of the sand filter in the step b), and horizontally disposed in the middle part of sand filter
There is one layer of manganese sand material material, manganese sand material material is detachably connected with sand filter.Can be according to the big of handled livestock breeding wastewater water
It is small, the model of manganese sand material material is changed, while livestock breeding wastewater, in filter process, filtration with manganese sand material can be sufficiently
Remove the iron ion and manganese ion in livestock breeding wastewater, the upper strata of sand filter can allow filtration with manganese sand material avoid being suspended thing it is straight
Parcel is connect, low its is gone into iron ions and the ability of manganese ion, the lower floor of sand filter can be supported to filtration with manganese sand material, enter
And the loss of filtration with manganese sand material is reduced, extend the service life of filtration with manganese sand material.
Further, in the step b), ammonia nitrogen retracting device is built with exchanger；After to be exchanged dose of adsorption saturation, use
Washing lotion is returned clean exchanger；When in backwash liquor ammonia nitrogen concentration reach more than 7000mg/L when, using backwash liquor as
Finished product is made in the raw material for making other nitrogenous products.The exchanger of ammonia nitrogen retracting device sufficiently can be absorbed in livestock breeding wastewater
Ammonia nitrogen, while backwash liquor, while being cleaned to exchanger, ammonia nitrogen can be transferred in backwash liquor, and backwash liquor is after recovery
Finished product can be made as the raw material of other nitrogenous products, to realize the recovery of ammonia nitrogen.
Further, in the step c), during Anaerobic Treatment, biologic packing material, and biologic packing material are added into anaerobic reactor
Volume be anaerobic reactor volume 20%~30%.Biologic packing material can be sufficiently mixed with anaerobic sludge, anaerobe flora
Fast breeding on biologic packing material can be quickly adhered to, and then allows anaerobic sludge quickly to be decomposed, can effectively improve the work
The processing load of sequence.
Further, in the step d), during Aerobic Process for Treatment, biologic packing material, and biologic packing material are added into aerobic reactor
Volume be anaerobic reactor volume 20%~30%.Biologic packing material can be sufficiently mixed with aerobic sludge, anaerobe flora
Fast breeding on biologic packing material can be quickly adhered to, and then allows aerobic sludge quickly to be decomposed, can effectively improve the work
The processing load of sequence.
Further, in the step e), during advanced treating process, after the livestock breeding wastewater outflow in potent processing unit
Enter in potent processing unit, while chemical floc or biological flocculant are added in potent processing unit, and chemistry wadding
The volume ratio of the volume of solidifying agent or biological flocculant and the livestock breeding wastewater in potent processing unit for 0.001%~
0.01%.It is to be designed according to the principle of electric flocculation, in the process of running, chemical floc or biological flocculant can allow livestock and poultry to support
Grow the impurity coagulating sedimentation in waste water, so can allow the low organic matter of the biodegradability in livestock breeding wastewater, phosphorus-containing compound,
Antibiotic, heavy metal and colourity etc. further reduce, to reach discharge standard.
Further, when the content of the suspension in the step a) is more than 400mg/L, between step a) and step b)
Implementation steps e).Step e) setting, can be to the impurity in the livestock breeding wastewater of step a) discharges；It can reduce step b's)
Handle load.
Brief description of the drawings
Fig. 1 is a kind of flow chart of livestock breeding wastewater handling process of the present invention.
Embodiment
Below by embodiment, the present invention is further detailed explanation：
The flow of livestock breeding wastewater handling process is substantially as shown in Figure 1 in embodiment：Comprise the following steps：
1. pretreatment process
Livestock breeding wastewater is passed through into preliminary sedimentation tank, coarse rack, fine fack, methane-generating pit and settling tank successively, to livestock and poultry cultivation
Waste water carries out preliminary separation of solid and liquid, and the solid suspensions such as the excrement in breeding wastewater, food-residue and various excretas are entered
Row preliminary sedimentation and isolation, the solid suspension in breeding wastewater is set to remove more than 90% under the process conditions, in this process
The solid suspension of formation is solid A；The gas such as caused methane in biogas slurry pond is passed through gas collection tank simultaneously, in case making
With.
When the content of the suspension in the livestock breeding wastewater flowed out in settling tank is more than 400mg/L, by settling tank
The livestock breeding wastewater of outflow is passed into potent processing unit, is added in certain proportion in the water inlet of potent processing unit
Mass concentration is 10%~20% polyaluminium chloride solution, and the flow velocity of waste water and the stream of polyaluminium chloride solution are controlled in launch process
The ratio of speed is 500:1~600:1, it is passed through the PAM solution that mass concentration is 0.1%~0.2%, control control in delivery port
The ratio of waste water flow velocity and PAM solution flow rates processed is 500:1~600:1, during control stop of the waste water in potent processing unit
Between be 1~1.5min, current density is 1~2.5mA/cm2, and the suspension that can effectively allow in livestock breeding wastewater quickly coagulates
Knot sedimentation, the suspension of sedimentation is solid E.
2. ammonia nitrogen recovery process
The one-level that the upper liquid of livestock breeding wastewater in pretreatment process settling tank is passed into ammonia nitrogen recovery process is adjusted
Chi Zhong, and the PH of livestock breeding wastewater being adjusted with calcium oxide, by the pH controls of livestock breeding wastewater 8.2~8.6 it
Between, while it is 5H to allow livestock breeding wastewater to be stopped in one-level regulating reservoir；Then livestock breeding wastewater in one-level regulating reservoir
Upper liquid is entered in the water distributor of sand filter by way of natural overflow, livestock breeding wastewater is uniformly passed through sand filtration
Pond, livestock breeding wastewater is uniformly flowed into collecting-tank after then filtering；Then water pump is used by livestock and poultry cultivation in collecting-tank
Waste water is pumped into adsorption tanks, and the stream of the livestock breeding wastewater in adsorption tanks is passed into by the regulation of the exits and entrances valve of water pump
Amount, it is 5~40BV/h to control flow velocity of the livestock breeding wastewater in adsorption tanks, and now the exchanger in adsorption tanks is to livestock and poultry cultivation
Ammonia nitrogen in waste water is adsorbed.
When the ammonia nitrogen concentration of the livestock breeding wastewater flowed out out of adsorption tanks is less than 200mg/L, the livestock and poultry in adsorption tanks
Breeding wastewater is entered in Anaerobic Treatment process.
When the ammonia nitrogen concentration of the livestock breeding wastewater flowed out out of adsorption tanks reaches 300mg/L, the exchange in adsorption tanks
Agent has been decreased obviously to the rate of adsorption of ammonia nitrogen, the exits and entrances valve now to switch off the pump, is opened backwash liquor exits and entrances valve and is used
The ammonia nitrogen that backwash liquor is adsorbed exchanger is parsed, and backwash liquor is repeatable to be utilized；When ammonia nitrogen concentration reaches in backwash liquor
During more than 7000mg/L, backwash liquor forms raw material of the mother liquor as nitrogenous product.Backwash liquor is prepared again, as making next time
With.
The solid suspension formed in ammonia nitrogen recovery process is solid B.
3. Anaerobic Treatment process
The anaerobic processing device of the process is to use ABR anaerobic reactors.Control livestock and poultry cultivation in ABR anaerobic reactors
The pH of waste water controls the livestock breeding wastewater in ABR anaerobic reactors to enter the stream of ABR anaerobic reactors between 6.5~7.5
Speed, ensure that livestock breeding wastewater stops 12~16H in ABR anaerobic reactors, while add biology into anaerobic reactor and fill out
Material, and the volume of biologic packing material is anaerobic reactor volume 25%.
Anaerobe flora can be intermittently added in anaerobic processing device running, to carry ABR anaerobic reactors
Treatment effeciency.Livestock breeding wastewater after processing enters anoxic pond, and the residence time of livestock breeding wastewater is 8 in anoxic pond
~12H.
The suspension that Anaerobic Treatment process is formed is solid C.
The water part of Aerobic Pond is back to the water inlet of anoxic pond, and the base sludge of Aerobic Pond sedimentation basin is partly refluxed to
The water inlet of anaerobic reactor.
4. Aerobic Process for Treatment process
The livestock breeding wastewater of anoxic pond, which enters, to be placed with the Aerobic Pond of aerobic microbiological flora, and is stopped in Aerobic Pond
6~8H is stayed, then livestock breeding wastewater is entered back into aerobic sedimentation tank, and the livestock breeding wastewater after precipitation enters in collecting-tank；
Biologic packing material is added into aerobic reactor simultaneously, and the volume of biologic packing material is anaerobic reactor volume 25%, to improve
The treatment effeciency in oxygen pond.
Livestock breeding wastewater after processing realizes mud-water separation into aerobic sedimentation tank, and supernatant enters collecting-tank, dirty
A mud part is back to the water inlet end of anaerobic reactor, and other part sludge is arranged to form solid B, enters fixed-end forces process
In.
5. advanced treating process
Livestock breeding wastewater in collecting-tank is passed through to the potent processing unit of the process with certain flow velocity, at potent place
The water inlet of reason device adds the polyaluminium chloride solution that mass concentration is 10%~20% in certain proportion, is handled for increase
Effect, it is 500 that the ratio of the flow velocity of waste water and the flow velocity of polyaluminium chloride solution is controlled in launch process:1~600:1, going out
The mouth of a river is passed through the PAM solution that mass concentration is 0.1%~0.2%, controls the ratio of waste water flow velocity and PAM solution flow rates to be
500:1~600:1, it is 1~1.5min to control residence time of the waste water in potent processing unit, current density is 1~
2.5mA/cm2, potent processing unit water outlet recoverable or discharge after precipitation separation, sterilization.
6. fixed-end forces process
Solid A, solid B, solid C, solid D and solid E caused by each operation as raw material, are passed through into effective, harmless metaplasia
The ecological fertilizer that organic biofertilizer is used for crops is made in thing fermentation.Filtrate is then back to biogas slurry pond, is cleaned for methane etc.
The raw material of the energy.
Above-described is only embodiments of the invention, and the general knowledge such as known concrete structure and/or characteristic is herein in scheme
Do not describe excessively.It should be pointed out that for those skilled in the art, without departing from the structure of the invention, also
Several modifications and improvements can be made, these should also be considered as protection scope of the present invention, and these are real all without the present invention is influenceed
The effect and practical applicability applied.The scope of protection required by this application should be based on the content of the claims, specification
In the record such as embodiment can be used for the content for explaining claim.
Claims (8)
1. a kind of livestock breeding wastewater handling process, it is characterised in that comprise the following steps：
Step a) is pre-processed：The livestock breeding wastewater in biogas slurry pond is extracted, separation of solid and liquid is carried out to livestock breeding wastewater, acquisition
Solids forms solid A；
Step b) ammonia nitrogens reclaim：The livestock breeding wastewater of outflow enters one-level regulating reservoir in step a), and regulating reservoir is by livestock and poultry cultivation
The pH value of waste water is adjusted between 8.2~8.6, and livestock breeding wastewater stands 3~6H in one-level regulating reservoir；Then by one-level
Livestock breeding wastewater upper liquid in regulating reservoir is passed through in sand filter, and then livestock breeding wastewater is exited into ammonia from sand filter
In nitrogen retracting device, and one-level regulating reservoir in sand filter with being precipitated as solid B；
Step c) Anaerobic Treatments：The livestock breeding wastewater that step b) flows out from ammonia nitrogen retracting device enters anaerobic processing device
In；Livestock breeding wastewater stops 12~16H in anaerobic processing device；Then livestock breeding wastewater flows from anaerobic processing device
Go out and enter back into anoxic pond, and livestock breeding wastewater stops 8~12H in anoxic pond；And in anaerobic processing device and anoxic pond
It is precipitated as solid C；
Step d) Aerobic Process for Treatment；The water flowed out in step c) from anoxic pond is entered in aerobic treatment device, and livestock and poultry cultivation
Waste water stops 6~8H in aerobic treatment device；Then the livestock breeding wastewater flowed out from aerobic treatment device enters back into
In oxygen precipitation pond, then by the supernatant collection of livestock breeding wastewater in aerobic sedimentation tank to collecting-tank；And in aerobic sedimentation tank
The muddy water of precipitation form solid D；
Step e) advanced treatings：D) livestock breeding wastewater flowed out in step collecting-tank is passed into potent processing unit, then
Advanced treating is carried out to livestock breeding wastewater, water outlet is after precipitating, sterilizing, qualified discharge；
Step f) fixed-end forces：Solid A, solid B, solid C and solid D are fermented, solid A, solid B, solid C after fermentation
Turn into organic biofertilizer with solid D.
2. a kind of livestock breeding wastewater handling process according to claim 1, it is characterised in that in the step b), adjust
The material for carrying out pH value in section pond to livestock breeding wastewater is nontoxic, has Coagulation aiding and alkalescence soluble in water or acid
Matter.
A kind of 3. livestock breeding wastewater handling process according to claim 1, it is characterised in that the sand in the step b)
There is a uniform water distributor in the pond face in filter tank, and horizontally disposed in the middle part of sand filter has one layer of manganese sand material material, manganese sand material material and sand filter
It is detachably connected.
A kind of 4. livestock breeding wastewater handling process according to claim 1, it is characterised in that in the step b), ammonia
Nitrogen retracting device is built with exchanger；After to be exchanged dose of adsorption saturation, using washing lotion is returned clean exchanger；When anti-
When ammonia nitrogen concentration reaches more than 7000mg/L in washing lotion, finished product is made using backwash liquor as the raw material for making other nitrogenous products.
5. a kind of livestock breeding wastewater handling process according to claim 1, it is characterised in that in the step c), detest
During oxygen processing, add biologic packing material into anaerobic reactor, and the volume of biologic packing material be anaerobic reactor volume 20%~
30%.
6. a kind of livestock breeding wastewater handling process according to claim 1, it is characterised in that good in the step d)
During oxygen processing, add biologic packing material into aerobic reactor, and the volume of biologic packing material be anaerobic reactor volume 20%~
30%.
7. a kind of livestock breeding wastewater handling process according to claim 1, it is characterised in that deep in the step e)
When spending treatment process, entered after the livestock breeding wastewater outflow in potent processing unit in potent processing unit, while strong
Imitate and chemical floc or biological flocculant are added in processing unit, and the volume of chemical floc or biological flocculant and potent place
The volume ratio for managing the livestock breeding wastewater in device is 0.001%~0.01%.
A kind of 8. livestock breeding wastewater handling process as claimed in any of claims 1 to 7, it is characterised in that when
When the content of suspension in the step a) is more than 400mg/L, the implementation steps e) between step a) and step b).
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