CN108947135A - A kind of livestock breeding wastewater integral treatment method - Google Patents
A kind of livestock breeding wastewater integral treatment method Download PDFInfo
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- CN108947135A CN108947135A CN201810864260.1A CN201810864260A CN108947135A CN 108947135 A CN108947135 A CN 108947135A CN 201810864260 A CN201810864260 A CN 201810864260A CN 108947135 A CN108947135 A CN 108947135A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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Abstract
The present invention relates to livestock breeding wastewater processing technology fields, it is therefore an objective to provide a kind of livestock breeding wastewater integral treatment method.The technical solution of use: S1, the water quality for detecting waste water；S2, stirring, according to waste water quality pretreated waste water；S3, anoxic, Aerobic Process for Treatment are successively carried out, wherein Aerobic is added with nitrification microbial inoculum, and controls dissolved oxygen content in treatment process, pH and return current ratio of the mixed liquid；S4, perpendicular stream precipitating, mud-water separation；S5, by the separating obtained clear water of step S4, be stirred, coagulation decoloration processing；Treated that waste water precipitated, mud-water separation for S6, coagulation decoloration；S7, precipitating gained sludge is drained into storage basin.Entire processing method is simple and easy, stable water outlet, treatment effeciency is high, construction is low with operating cost.
Description
Technical field
The present invention relates to livestock breeding wastewater processing technology fields, and in particular to a kind of livestock breeding wastewater integrated treatment
Method.
Background technique
In recent years, China's large-scale cultivation is quickly grown, and the generation of a large amount of livestock breeding wastewaters is to environment at the same time
Influence also becomes increasingly conspicuous.Currently, breeding pollution has become the largest source of agricultural non-point source pollution.It is counted according to relevant departments, the whole nation
The COD discharge amount of the livestock and poultry farm and professional raising farmer that have 24 provinces accounts for local agricultural area source total emission volumn
90% or more.The waste water that scale livestock farming discharges daily/biogas slurry amount is big and concentrates that (Yue Caide, Dong Hongmin, Zhang Wanqin wait
Aquaculture wastewater/biogas slurry film concentration Research progress [J] China biogas, 2018,36 (2): 25-33.), waste water/biogas slurry
In the pollutants such as organic matter, SS, ammonia nitrogen containing high concentration, simultaneously containing a large amount of other pollutants such as heavy metals, remaining veterinary drug
With pathogen etc., if being just emitted into environment or directly agricultural without processing, it will cause the tight of local environment and farmland
Heavily contaminated.
It is the most general with the application of anaerobic-aerobic group technology at present for the processing method and technique of livestock breeding wastewater
Time.It such as authorizes patent of invention CN101921044B to disclose a kind of two-stage anaerobic-tower type filter chamber livestock/poultry wastewater treatment method, passes through
The alternate method of operation of anaerobic-aerobic handles livestock breeding wastewater；Authorization patent of invention CN1315743C discloses a kind of one
Change anaerobism-wetland variation device.Wherein, the high-enriched organics in livestock breeding wastewater are partially converted into first through Anaerobic Treatment
The waste water of alkane, discharge is handled through the dry-wet alternate of artificial swamp, it can be achieved that nitrification-denitrification.
In livestock breeding wastewater actual process, conventional biological treatment technique is often difficult to meet processing requirement, and
Membrane module application can then play preferable removal effect, as granted patent CN207210210U, CN207047067U,
CN206289127U, CN203159398U etc. are all made of membrane module to handle such waste water.However, in livestock breeding wastewater at
Divide complexity, SS, colloidal substance are more, easily cause fouling membrane, lead to the increase of cost for wastewater treatment.Although some advanced oxidation skills
Art such as photochemical catalytic oxidation (CN207091218U), Fenton oxidation (CN207047067U), ozone oxidation (CN206486337U), electricity
Chemical oxidation (CN207552136U) etc. application be able to achieve the advanced treating of livestock breeding wastewater, but be limited to technology and it is economical because
Element is difficult to realize large-scale application mostly.
In addition, using artificial swamp, oxidation pond (CN207091218U) although etc. processing units operating cost it is lower, account for
Ground area is big, cultivated land protection is stringent, the nervous area in certain soils is not applicable.It is main both at home and abroad for the processing of biogas slurry waste water
Part COD, SS, TN and TP are removed by preconditioning techniques such as chemical method, catalysis oxidation and electrochemical processes；It is subsequent dense to evaporate
Contracting, UF membrane Resource recovery；Or the group technology based on the bioanalysis such as A/O, SBBR, artificial swamp is further processed biogas slurry
Waste water (Guan Xiuqiong, Liu Linpei, Liu Chun farm anaerobic digestion biogas slurry Research on Post-processing Techniques progress [J] Sichuan University of Science & Engineering
Journal, 2018,31 (1): 21-7.).
In summary, the prior art focuses on going for the substances such as organic matter, ammonia nitrogen in livestock breeding wastewater and biogas slurry mostly
Remove, and cannot efficiently remove total nitrogen and coloration, also lack collection COD at present, ammonia nitrogen, total phosphorus, total nitrogen and coloration efficiently removes and
Low consumption runs on integrated wastewater treatment equipment and method.In addition, livestock breeding wastewater water quality is changeable, prior art processes are most
Using fixing process process, it is difficult to accomplish to adjust accordingly and convert for different quality, adaptability is poor.
Summary of the invention
The livestock breeding wastewater one that the object of the present invention is to provide a kind of structures simply, high treating effect and processing cost are low
Body processing method.
For achieving the above object, the technical scheme adopted by the invention is that: at a kind of livestock breeding wastewater integration
Reason method, step include:
S1, the water quality for detecting waste water；
S2, stirring, according to waste water quality pretreated waste water；
S3, anoxic, Aerobic Process for Treatment are successively carried out, wherein Aerobic is added with nitrification microbial inoculum, and controls processed
Dissolved oxygen content, pH and return current ratio of the mixed liquid in journey；
S4, precipitating, mud-water separation；
S5, by the separating obtained supernatant of step S4, be stirred, coagulation decoloration processing；
Treated that waste water precipitated, mud-water separation for S6, coagulation decoloration；
S7, precipitating gained sludge is drained into storage basin.
Preferably, as SS higher in waste water, by step S3, S4 and S5, S6 reversed order.
Preferably, the nitrification microbial inoculum mass volume ratio of the addition in Aerobic is 2-5%.
Preferably, resulting sludge is precipitated into through perpendicular stream in part and sends anoxic, Aerobic Process for Treatment back to.
Preferably, resulting sludge will be precipitated after the processing of part coagulation decoloration send coagulation decoloration processing back to.
Preferably, the anoxic, one kind that filler employed in aerobic process is composite filling or floating stuffing；It is described
It is 150-200mm that composite filling, which designs spacing, and material is PP+ hydroformylation silk；The floating stuffing dosage is anoxic, Aerobic Process for Treatment
The 5-8% of tank volume used in process.
Preferably, dissolved oxygen controls the dissolved oxygen control in 0.5-1.0mg/L, aerobic process during the anoxic treatment
System is in 2-4mg/L；Return current ratio of the mixed liquid is 100%-400%.
Preferably, it is detected according to step S1 and obtains data, filler used in adjustment anoxic, Aerobic.
Preferably, the device of use includes conditioning tank, equipment room, anoxic pond, aerobic tank, vertical sedimentation tank, coagulation decoloration
Pond, inclined-plate clarifying basin；Chemicals dosing plant, blower, the first reflux pump, the second reflux pump, third reflux are provided in the equipment room
Pump, two pH on-line computing models, two DO on-line computing models and control cabinet；The blower, the first reflux pump, the second reflux pump,
Third reflux pump, chemicals dosing plant, pH on-line computing model, DO on-line computing model are electrically connected with control cabinet respectively, the dosing dress
It sets and is connected respectively with conditioning tank, coagulation decoloration pond；The conditioning tank water outlet is linked with anoxic pond, anoxic pond water outlet with it is aerobic
Pond connection, setting bypass is connected with the first reflux pump between the anoxic pond, aerobic tank, the aerobic tank and vertical sedimentation tank phase
Even, the vertical sedimentation tank is connected with anoxic pond, aerobic tank respectively by the second reflux pump, and the vertical sedimentation tank and coagulation are de-
Color pond is connected, and the coagulation decoloration pond is connected with inclined-plate clarifying basin, the vertical sedimentation tank, inclined-plate clarifying basin and storage basin phase
Even, the connection between each pond body is to be detachably connected；Be additionally provided between the inclined-plate clarifying basin and coagulation decoloration pond bypass with
Third reflux pump is connected, and the test side of the pH on-line computing model is separately positioned on anoxic pond, in aerobic tank, and the DO is supervised online
The test side for surveying instrument is separately positioned on anoxic pond, in aerobic tank.
The beneficial effects of the present invention are: livestock breeding wastewater successively carries out anoxic, Aerobic Process for Treatment, add in Aerobic
Add nitrification microbial inoculum, and control the dissolved oxygen content, pH and return current ratio of the mixed liquid for the treatment of process, livestock breeding wastewater can be effectively removed
The pollutants such as coloration, SS, organic matter, ammonia nitrogen, total nitrogen, total phosphorus；Coagulation decoloration processing then can effectively reduce effluent color dilution and total
Phosphorus concentration has the advantages that short flow, easy to operate, treatment effeciency is high, high treating effect, and construction is lower with operating cost.
Meanwhile according to waste water quality adjusting process process, it is applicable to the processing of the livestock breeding wastewater of different quality.In addition, passing through
Mixed liquor reflux, pH, DO on-line monitoring, more can accurately control biochemical reaction；The dirt that coagulation decoloration processing is generated
Mud partial reflux can reduce the consumption of coagulation, decolorising agent.
Detailed description of the invention
Fig. 1 is the device schematic top plan view that the present invention uses；
Fig. 2 is the face the A-A schematic diagram of attached drawing 1 of the present invention；
Fig. 3 is the face the B-B schematic diagram of attached drawing 1 of the present invention；
Fig. 4 is the stuffing frame schematic diagram for the device that the present invention uses；
Fig. 5 is the piping connection schematic diagram for the device that the present invention uses；
Fig. 6 is process flow chart of the invention.
Specific embodiment
Present invention is further described in detail with reference to the accompanying drawing, in order to facilitate understanding by those skilled in the art originally
Invention is connected wherein the connection between each pond body passes through corresponding pipeline, pump, valve, and each electric elements are connected by conducting wire,
Specific description will be no longer done in specification.
As shown in Figs. 1-5, a kind of livestock breeding wastewater integrated treatment unit forms main tank body by glass epoxy, so
Partition is set in main tank body afterwards, is divided into: pretreatment unit, biochemical treatment unit, physicochemical treatment unit, equipment room 2,
Storage basin 5.The pretreatment unit is mainly used for adjusting water quality, the water for entering biochemical treatment unit, when ammonia nitrogen is dense in water inlet
Also it can transform to simple ammonia aeration pond when spending high；The biochemical treatment unit can remove high-enriched organics, SS, ammonia nitrogen, total nitrogen,
Coloration；The physicochemical treatment unit can remove refractory organic, total phosphorus and coloration.Wherein pretreatment unit is to adjust
Pond 1, biochemical treatment unit include anoxic pond 3, aerobic tank 4, vertical sedimentation tank 8, physicochemical treatment unit include coagulation decoloration pond 6,
Inclined-plate clarifying basin 7.
Intake pump, chemicals dosing plant 13, blower 17, the first reflux pump 9, the second reflux pump 10, third are provided in equipment room 2
The DO on-line computing model 15 of pH on-line computing model 14, two of reflux pump 11, two and control cabinet 12.The blower 17, first flows back
Pump the 9, second reflux pump 10, third reflux pump 11, chemicals dosing plant 13, pH on-line computing model 14, DO on-line computing model 15 respectively with
Control cabinet 12 is electrically connected.It is controlled that is, the electrical equipment in whole system passes through control cabinet 12, facilitates system
Control and automatic operating.Acid/base liquid, decolorising agent, coagulant, nitrification microbial inoculum (Publication No. in the chemicals dosing plant 13
Microbial inoculum documented by CN104164386A patent of invention contains a large amount of ammonia oxidizing bacterias (AOB) and nitrite-oxidizing bacteria
(NOB), the microorganisms such as a small amount of heterotroph, ammonifiers, denitrifying bacterium) adding module includes acid or alkali storage container, coagulant
Storage container, decolorising agent storage container, nitrification microbial inoculum storage container and corresponding metering pump, the chemicals dosing plant 13 respectively with
Conditioning tank 1, coagulation decoloration pond 6 are connected.It is understood that operator can control and add according to the water quality situation of actual waste water
Medicine device 13, to conditioning tank 1 be added respective concentration and corresponding discharge acid/base liquid, to coagulation decoloration pond 6 be added respective concentration and
The coagulant and decolorising agent of corresponding discharge, the nitrification microbial inoculum that corresponding discharge is added to aerobic tank 4 (it is de- can to promote livestock breeding wastewater
Nitrogen efficiency shortens short-cut nitrification and denitrification and starts the time).
In addition, 1 discharge outlet of conditioning tank is sequentially connected anoxic pond 3, aerobic tank 4, between the anoxic pond 3, aerobic tank 4
Setting bypass is connected with the first reflux pump 9.The aerobic tank 4 is connected with vertical sedimentation tank 8, and the vertical sedimentation tank 8 passes through the
Two reflux pumps 10 and corresponding pipe valve are connected with anoxic pond 3, aerobic tank 4 respectively.The vertical sedimentation tank 8 and coagulation decoloration pond 6
It is connected, the coagulation decoloration pond 6 is connected with inclined-plate clarifying basin 7, the vertical sedimentation tank 8, inclined-plate clarifying basin 7 and 5 phase of storage basin
Even.Bypass is additionally provided between the inclined-plate clarifying basin 7 and coagulation decoloration pond 6 to be connected with third reflux pump 11.The pH is online
The test side of monitor 14 is separately positioned on anoxic pond 3, in aerobic tank 4, and the test side of the DO on-line computing model 15 is set respectively
It sets in anoxic pond 3, aerobic tank 4.
Specifically, mixed liquor can be carried out mud-water separation by vertical sedimentation tank 8, and supernatant is by overflow launder or accordingly
Pipeline is delivered to coagulation decoloration pond 6, bottom of pond of the sludge settling in vertical sedimentation tank 8.First reflux pump 9 can will pass through aerobic tank 4
In mixed liquor blowback anoxic pond 3；The sludge pump of 8 bottom of pond of vertical sedimentation tank can be back to anoxic pond 3, aerobic by the second reflux pump 10
Pond 4, to realize the circular treatment of mixed liquor, sludge, it is ensured that the removal of high-enriched organics, SS, ammonia nitrogen, total nitrogen, coloration etc.
Rate.In addition by treated in coagulation decoloration pond 6 waste water, by pumping accordingly and pipeline is sent into inclined-plate clarifying basin 7, sloping plate deposition
Pond 7 carries out mud-water separation to it；Supernatant after its separation, is discharged by overflow launder, and the sludge of bottom of pond is returned by third
Stream pump is by a portion blowback coagulation decoloration pond 6, to reduce the usage amount of coagulant, decolorising agent.Last vertical sedimentation tank
8, remaining sludge is pumped into storage basin 5 by dredge pump 31 in inclined-plate clarifying basin 7.
Further, the conditioning tank 1, anoxic pond 3,4 bottom of aerobic tank are provided with aerator, the aerator
Including microporous diaphragm aeration plate 16.16 aeration plate of aeration plate having a size of Φ 215mm, clipping room away from for 500mm, surface away from
Bottom of pond mounting height is 200-270mm, and service area is 0.25-0.55m2/, and the aeration plate 16 is connected with blower 17.It answers
When understanding, can by pH in pH on-line computing model 14,15 real-time monitoring anoxic pond 3 of DO on-line computing model and aerobic tank 4 and
DO, so that it is guaranteed that oxygen pond 3 in dissolved oxygen control the dissolved oxygen control in 0.5-1.0mg/L, aerobic tank 4 in 2-4mg/L, mix
It closes liquid reflux ratio and is set as 100%-400%；To realizing short-cut nitrification-denitrification, to improve total nitrogen removal efficiency, at reduction
Manage cost.Furthermore when processing sewage ammonia nitrogen concentration is higher, the gas circuit valve for controlling to adjust pond can be passed through, increase conditioning tank point
Distribution capacity is cooperated additional lye to carry out ammonia aeration, the carbon-nitrogen ratio of waste water is adjusted with this.
Further, the anoxic pond 3, be mounted on filler in aerobic tank 4, filler is that combined stuffing or suspend is filled out
Material.It is 150-200mm that composite filling, which designs spacing, and material is PP+ hydroformylation silk, and specification is 150 × 100mm of Φ (80).Combination is filled out
Material is mounted on free-standing stuffing frame 32, and the height design size of stuffing frame 32 is top 100mm low compared with the pond body water surface, bottom
300-400mm high compared with pool bottom, surrounding is 50-100mm away from the spacing between pond body, in order to stuffing frame 32 and composite filling
Disassembly.In addition floating stuffing adds the 5-8% that volume is tank volume, to guarantee the effect of wastewater treatment.
Further, agitating device is installed, agitating device includes that mechanical stirring and aeration stir in the coagulation decoloration pond 6
Mix device.Wherein, mechanical stirring device is that stirring blade is had on machine shaft, and aeration stirrer is to be arranged in coagulation decoloration
The aeration plate 16 of 6 bottom of pond of pond, aeration plate 16 are connected with blower 17.That is, coagulation decoloration pond 6 passes through mechanical stirring and aeration
The mode of stirring, the intracorporal sewage of stirring pool；To improve refractory organic, total phosphorus and color removal efficiency.
Further, control cabinet 12 is made of PLC system, for the control to each electrical equipment, is divided into manual, automatic mold
Formula, and runing time can be set.Furthermore the valve for controlling various pieces tolerance and water is all arranged in convenient for operation
Position.
According further to the difference of livestock breeding wastewater water quality, waste water treatment process can be adjusted and be converted.Work as detection
When high, carbon-nitrogen ratio is lacked of proper care to influent ammonium concentration, blower 13, chemicals dosing plant 13 can be opened by the pH of waste water and be adjusted to alkalinity (pH11
Left and right), stripping removal is carried out to the ammonia nitrogen in waste water, to achieve the effect that adjust waste water carbon-nitrogen ratio, process flow such as attached drawing
Shown in 6a.When detecting into water containing SS higher, switch pipeline and corresponding valve, 6 pond of coagulation decoloration is preposition, that is,
It says, waste water first inputs coagulation decoloration pond 6, be then turned on chemicals dosing plant 13 to remove fraction solids after reconciling pond 1 and adjusting
SS, total phosphorus and coloration；Last waste water enters back into anoxic pond 3, aerobic tank 4 is further handled, process flow such as attached drawing 6b institute
Show.Meanwhile also anoxic pond 3, the filler in aerobic tank 4 can be replaced, biochemical treatment unit is become according to waste water actual treatment situation
Be changed to conventional activated sludge technique (non-filling), Biological Contact Oxidation Process (composite filling), IFAS technique (composite filling),
One of MBBR technique (floating stuffing) biochemical treatment unit, to adapt to the processing requirement of different quality.
It further illustrates combined with specific embodiments below, through the present apparatus treated livestock breeding wastewater water outlet status.
Embodiment 1
Operating procedure:
1, influent quality is detected.
2, power on, open master switch, open intake pump 30, by water inlet 33 extract waste water, and to inflow into
Row is adjusted, and after regulating flow, 1 tolerance valve of conditioning tank and blower 17 are opened, and by way of aeration stirring, keeps sewage mixed
It closes uniform；Then it opens acid/base liquid and adds switch, the flow of regulating agent concentration and corresponding measurement pump is added into conditioning tank 1
Acid/base liquid；Complete the pretreatment to water inlet.
3, corresponding pump valve is opened, mixed liquor is made to sequentially enter anoxic pond 3, aerobic tank 4 by conditioning tank 1；Open anoxic pond 3
With the corresponding valve of aerobic tank 4, the flow according to waste water adjusts control aeration quantity；Open the first reflux pump 9 and the second reflux pump
10, and according to the regurgitant volume of water quality treatment requirement determining mixed liquor and sludge.A certain amount of nitrification microbial inoculum is added to aerobic tank 4,
Meanwhile by pH on-line computing model 14,15 dynamic detection of DO on-line computing model and adjustment anoxic pond 3, the pH value in aerobic tank 4 and
DO concentration controls the generation of short-cut nitrification-denitrification during biochemical treatment, completes anoxic, aerobic treatment.
4, the mud mixture of aerobic tank 4 is after vertical sedimentation tank 8 carries out mud-water separation, and partial sludge is through the second reflux pump
10 are back to anoxic pond 3, aerobic tank 4, and supernatant flow to coagulation decoloration pond 6 through overflow launder.
5, the agitating device in coagulation decoloration pond 6 is opened；Chemicals dosing plant 13 is opened simultaneously, is added into coagulation decoloration pond 6
Coagulant and decolorising agent.
6, through treated in coagulation decoloration pond 6, waste water enters that inclined-plate clarifying basin 7 carries out mud-water separation, and supernatant is through overflow launder
Discharge；Third reflux pump 11 is opened, adjusts the flow on return line, materialized mud is partly refluxed to coagulation decoloration pond 6, to subtract
The usage amount of few coagulant, decolorising agent.
7, vertical sedimentation tank 8 and 7 excess sludge of inclined-plate clarifying basin then drain into storage basin 5 through dredge pump 31.
Specifically, under conditions of water inlet carbon nitrogen more appropriate (COD:TN ≈ 10:1), non-filling in biochemical treatment unit, i.e.,
Using conventional activated sludge process, process flow is as shown in Figure 6 a.The DO concentration in anoxic pond 3 is controlled simultaneously and is controlled is
0.5mg/L, the DO concentration control in aerobic tank 4 is 2.0-3.5mg/L, pH 7.8-8.6；Return current ratio of the mixed liquid is 200%；Water
The power residence time (HRT) is set as 5d, and sludge retention time (SRT) is set as 7d；Temperature range is 25 DEG C -28 DEG C；Nitrifier
The additive amount of agent is 2-5% (mass volume ratio, w/v)；Coagulant, decolorising agent additive amount are respectively 200mg/L, 150mg/L.It is real
It is as shown in table 1 to apply effect.
Table 1
Embodiment 2:
In the present embodiment, water inlet SS content is high, and coagulation decoloration pond 6 and inclined-plate clarifying basin 7 is preposition, that is, by embodiment
Before operating procedure 5,6 in 1 is transposed to step 3, remaining is constant；In addition, influent COD is higher, biochemical treatment unit is using combination
Filler uses IFAS technique, process flow is as shown in fig. 6b.The DO concentration in anoxic pond 3 is controlled simultaneously and is controlled is
0.5-0.8mg/L, the DO concentration control in aerobic tank 4 is 2.2-3.8mg/L, pH 7.2-8.2；Return current ratio of the mixed liquid is set as
250%；Hydraulic detention time (HRT) is set as 5d, and sludge retention time (SRT) is set as 7d；Temperature range is 25 DEG C -30
℃；The additive amount for nitrifying microbial inoculum is 2-5% (w/v)；Coagulant, decolorising agent additive amount are respectively 300mg/L, 200mg/L.Implement
Effect is as shown in table 2.
Table 2
Embodiment 3:
In the present embodiment, water inlet carbon-nitrogen ratio is about 5:1, is low ratio of carbon to ammonium waste water, by adding lye to conditioning tank by pH tune
To 11 or so, that is, on the basis of embodiment 1, it is 11 or so that the water quality of step 2, which is adjusted to pH, to adjust water inlet carbon nitrogen
Than；Biochemical treatment unit uses composite filling, remaining step remains unchanged, that is, uses contact oxidation technology, process flow is such as
Shown in attached drawing 6a.The DO concentration control controlled in anoxic pond 3 simultaneously is 0.5-0.8mg/L, the DO concentration control in aerobic tank
For 2.6-3.8mg/L, pH range is 7.6-8.3；Return current ratio of the mixed liquid is set as 200%；Hydraulic detention time HRT=5d,
SRT=7d；Temperature range is 25 DEG C -30 DEG C；The additive amount for nitrifying microbial inoculum is 2-5% (w/v)；Coagulant, decolorising agent additive amount
Respectively 300mg/L, 150mg/L.Implementation result is as shown in table 3.
Table 3
Embodiment 4:
In the present embodiment, the temperature range of waste water is 15 DEG C -19 DEG C, and lower temperature has certain suppression to the activity of microorganism
Production is used.On the basis of embodiment 1, biochemical treatment unit uses (floating stuffing), remaining step is remained unchanged, that is, used
MBBR technique, to reduce influence of the low temperature to microbial activity, process flow is as shown in fig. 6.Simultaneously in anoxic pond 3
The control of DO concentration is 0.5-1.0mg/L, and the middle DO concentration control of aerobic tank is 3.0-4.0mg/L, and pH is 7.8-8.2；Mixing
Liquid reflux ratio is set as 300%；HRT=8d, SRT=10d；The additive amount for nitrifying microbial inoculum is 2-5% (w/v)；Coagulant, decoloration
Agent additive amount is respectively 250mg/L, 150mg/L.Implementation result is as shown in table 4.
Table 4
It should be pointed out that inventor has not only done the experiment of above-mentioned each parameter, only above-mentioned each group parameter and result
It is more representative, and consider for length, just have chosen the various embodiments described above comparison.Wherein the unit of each data is mg/
L.According to table 1~4, it can be seen that pass through the waste water of livestock poultry that processing method of the invention is handled, effluent characteristics: COD≤
246mg/L, SS≤85mg/L, ammonia nitrogen≤12.1mg/L, total nitrogen≤65.7mg/L, total phosphorus≤3.3mg/L, in addition to COD, other refer to
Mark reaches the standard of " livestock and poultry breeding industry pollutant emission standard " (secondary exposure draft).
Above-described embodiment is only to have been further described to the object, technical solutions and advantages of the present invention, is answered
Understand, the present invention is not limited to the ranges of specific embodiment.For those skilled in the art, as long as respectively
Kind variation the attached claims limit and determine the spirit and scope of the present invention in, these variation be it will be apparent that
All are using the innovation and creation of present inventive concept in the column of protection.
Claims (9)
1. a kind of livestock breeding wastewater, biogas slurry integral treatment method, step include:
S1, the water quality for detecting waste water；
S2, stirring, according to waste water quality pretreated waste water；
S3, anoxic, Aerobic Process for Treatment are successively carried out, wherein Aerobic is added with nitrification microbial inoculum, and controls in treatment process
Dissolved oxygen content, pH and return current ratio of the mixed liquid；
S4, precipitating, mud-water separation；
S5, by the separating obtained supernatant of step S4, be stirred, coagulation decoloration processing；
Treated that waste water precipitated, mud-water separation for S6, coagulation decoloration；
S7, precipitating gained sludge is drained into storage basin.
2. livestock breeding wastewater integral treatment method according to claim 1, it is characterised in that: as SS higher in waste water
When, step S5, S6 is exchanged to before step S3.
3. livestock breeding wastewater integral treatment method according to claim 1 or 2, it is characterised in that: Aerobic Process for Treatment mistake
The nitrification microbial inoculum mass volume ratio of addition in journey is 2-5%.
4. livestock breeding wastewater integral treatment method according to claim 3, it is characterised in that: part is heavy through perpendicular stream
The resulting sludge that forms sediment sends anoxic, Aerobic Process for Treatment back to.
5. livestock breeding wastewater integral treatment method according to claim 4, it is characterised in that: by part coagulation decoloration
Resulting sludge is precipitated after processing sends coagulation decoloration processing back to.
6. livestock breeding wastewater integral treatment method according to claim 5, it is characterised in that: the anoxic, aerobic
Used filler is one kind of composite filling or floating stuffing in the process；The composite filling design spacing is 150-200mm,
Material is PP+ hydroformylation silk；The floating stuffing dosage is the 5-8% of anoxic, tank volume used in Aerobic.
7. livestock breeding wastewater integral treatment method according to claim 6, it is characterised in that: the anoxic treatment mistake
Dissolved oxygen of the dissolved oxygen control in 0.5-1.0mg/L, aerobic process is controlled in 2-4mg/L in journey；Return current ratio of the mixed liquid is
100%-400%.
8. livestock breeding wastewater integral treatment method according to claim 7, it is characterised in that: detected according to step S1
Obtain data, filler used in adjustment anoxic, Aerobic.
9. the device of livestock breeding wastewater integral treatment method described in -8 any one claims according to claim 1,
It is characterized by comprising conditioning tank (1), equipment room (2), anoxic pond (3), aerobic tank (4), vertical sedimentation tank (8) coagulation decolorations
Pond (6), inclined-plate clarifying basin (7)；
Be provided in the equipment room (2) chemicals dosing plant (13), blower (17), the first reflux pump (9), the second reflux pump (10),
Third reflux pump (11), two pH on-line computing models (14), two DO on-line computing models (15) and control cabinet (12)；The blower
(17), the first reflux pump (9), the second reflux pump (10), third reflux pump (11), chemicals dosing plant (13), pH on-line computing model
(14), DO on-line computing model (15) respectively with control cabinet (12) be electrically connected, the chemicals dosing plant (13) respectively with conditioning tank
(1), coagulation decoloration pond (6) are connected；
Conditioning tank (1) discharge outlet is successively connect with anoxic pond (3), aerobic tank (4), the anoxic pond (3), aerobic tank (4)
Between setting bypass be connected with the first reflux pump (9), the aerobic tank (4) is connected with vertical sedimentation tank (8), and the perpendicular stream precipitates
Pond (8) is connected with anoxic pond (3), aerobic tank (4) respectively by the second reflux pump (10), the vertical sedimentation tank (8) and coagulation
Decolouring pond (6) is connected, and the coagulation decoloration pond (6) is connected with inclined-plate clarifying basin (7), the vertical sedimentation tank (8), sloping plate deposition
Pond (7) is connected with storage basin (5), and the connection between each pond body is to be detachably connected；
Bypass is additionally provided between the inclined-plate clarifying basin (7) and coagulation decoloration pond (6) to be connected with third reflux pump (11), it is described
The test side of pH on-line computing model (14) is separately positioned in anoxic pond (3), aerobic tank (4), the DO on-line computing model (15)
Test side be separately positioned in anoxic pond (3), aerobic tank (4).
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