CN110217887A - A kind of the substep water inlet sequencing batch reactor and method of processing waste water of livestock poultry anaerobic digestion solution - Google Patents

A kind of the substep water inlet sequencing batch reactor and method of processing waste water of livestock poultry anaerobic digestion solution Download PDF

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CN110217887A
CN110217887A CN201910375821.6A CN201910375821A CN110217887A CN 110217887 A CN110217887 A CN 110217887A CN 201910375821 A CN201910375821 A CN 201910375821A CN 110217887 A CN110217887 A CN 110217887A
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reactor
anaerobic digestion
digestion solution
water inlet
livestock
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CN110217887B (en
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李平
冯涛
吴锦华
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South China University of Technology SCUT
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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
    • C02F3/006—Regulation methods for biological treatment
    • 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
    • C02F3/301—Aerobic and anaerobic treatment in the same reactor
    • 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
    • C02F3/302—Nitrification and denitrification treatment
    • 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
    • C02F3/308—Biological phosphorus removal
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/105—Phosphorus compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/38—Organic compounds containing nitrogen
    • 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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  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
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  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

The present invention relates to a kind of substep water inlet sequencing batch reactor for handling waste water of livestock poultry anaerobic digestion solution and methods.The substep water inlet sequencing batch reactor includes reactor body, further includes three phase separator and inner draft tube, the three phase separator and inner draft tube are separately positioned in reactor body.Further include a cone bottom, communicates and connect below the cone bottom and reactor body；An aerator is additionally provided at the cone bottom center；The aerator is connected with external aeration pump.The processing method of waste water of livestock poultry anaerobic digestion solution of the invention by above-mentioned apparatus with anaerobic-aerobic-anaerobic-aerobic alternately, it is utilized and the generation of basicity and is controlled using the electronic measurement balance coupling carried out based on Chemical Measurement by the metabolism to denitrogenation dephosphorizing process carbon source in the above process, added respectively in two anoxic sections and the livestock breeding wastewater stoste that matches of electron acceptor amount solves the carbon source demand of denitrogenation dephosphorizing process.

Description

It is a kind of handle waste water of livestock poultry anaerobic digestion solution substep water inlet sequencing batch reactor and Method
Technical field
The invention belongs to technical field of waste water processing, and in particular to it is a kind of handle waste water of livestock poultry anaerobic digestion solution substep into Water sequencing batch reactor and method.
Background technique
It is intensive, scale animal and poultry cultivation industry is quick with the adjustment of agricultural structure and the development of new countryside construction Development, livestock and poultry cultivation total amount is also increasing year by year, and for pig-breeding industry, national live pig breeding stock in 2017 has reached 4.35 Hundred million, account for the 56.6% of world's total amount.National nearly 4,000,000,000 tons of livestock and poultry feces total amount generated every year, these wastes have become agricultural The main source of pollution of area source.The COD of China's livestock and poultry breeding industry discharge, total nitrogen, that total phosphorus accounts for agriculture source emission respectively is total 96%, 38%, the 56% of amount.Livestock and poultry feces discharge amount is big, seriously polluted, and the development of aquaculture needs efficient pollution Treatment process.
Anaerobism+Aerobic biological process combination technique is the prevailing technology of current livestock breeding wastewater processing, however in anaerobism In digestion process, there are BOD5With COD, BOD5With NH4 +- N biodegrade and the nonsynchronous problem of conversion, make anaerobic effluent Carbon-nitrogen ratio numerous imbalances, lead to that aftertreatment systems electron donor lacks, basicity is unbalance, and then after seriously affecting anaerobic digestion solution The operational effect of continuous treatment process.Although passing through the methods of supplement basicity, add external source organic carbon and can obtain preferable processing Effect, but processing cost significantly rises, and needs constantly instantaneously to be adjusted according to the fluctuation of influent quality, technical process control The complexity of system increases, and operating cost is also substantially increased.Therefore, for China's scale animal and poultry cultivation waste water and anaerobic digestion The water quality characteristics of liquid, develop a kind of can realize anaerobic digestion solution high-efficient denitrification and dephosphorization on the basis of carbon source/basicity self-balancing Technology has great importance to effective scale animal and poultry cultivation waste water pollution problem of administering.
The Chinese invention patent of 105384248 A of Publication No. CN discloses a kind of the good of digested piggery wastewater Oxygen processing method.This method improves anaerobic digestion by pig farm raw water of the addition without anaerobic digestion on the basis of two-stage A/O The problems such as imbalance of liquid subsequent processes carbon-nitrogen ratio, aerobic tank pH value sharply decline, there is preferably digested piggery wastewater Denitrification effect.But this method has the disadvantage that first, this method uses setting ratio (20%-40%) to anoxic section Piggery wastewater stoste is supplemented, does not quantify to consider the fluctuation of influent quality and the variation of technical process electron acceptor；Second, the patent Mainly for Denitrogenation, demand of the dephosphorization process to carbon source is not considered, is not also directed to anaerobic digestion solution influent quality and its mistake Journey treatment characteristic establishes the electrical requirements balance regulation method of quantization；Third, this method is returned using reflux in mixed liquor and sludge Stream, operating process is complicated, and its dephosphorization relies on additional dephosphorization system, cannot achieve the synchronous denitrification dephosphorizing of anaerobic digestion solution.
Summary of the invention
Livestock and poultry cultivation anaerobic digestion solution of the present invention carbon source, the serious unbalance problem of basicity during subsequent biological treatment, The substep water inlet sequencing batch reactor and method of a kind of processing waste water of livestock poultry anaerobic digestion solution are provided, lacked using anaerobic-aerobic- The technology of the aerobic substep water inlet sequencing batch reactor processing low ratio of carbon to ammonium livestock and poultry cultivation anaerobic digestion solution alternately of oxygen-.It is logical It crosses and accurate electronic measurement balance coupling calculating and control is carried out to water inlet sequencing batch reactor denitrogenation dephosphorizing process step by step, lacking The livestock breeding wastewater stoste that the addition of oxygen stage matches with electron acceptor amount needs to solve the electron donor of denitrogenation dephosphorizing process It asks, reduces cost for wastewater treatment while effectively promoting denitrogenation dephosphorizing efficiency.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of substep water inlet sequencing batch reactor handling waste water of livestock poultry anaerobic digestion solution, including reactor body, are also wrapped Three phase separator and inner draft tube are included, the three phase separator and inner draft tube are separately positioned in reactor body, and described Three phase separator is located at the top of inner draft tube；Further include a cone bottom, communicates and connect below the cone bottom and reactor body It connects；An aerator is additionally provided at the cone bottom center；The aerator is connected with external aeration pump；The reactor sheet The side of body is equipped with stoste water inlet and anaerobic digestion solution water inlet, if the other side is provided with along reactor body different height Do the mouth of a river；The side at the cone bottom is additionally provided with mud discharging mouth；It further include temperature controller and blender, the temperature controller and reactor sheet The inside of body is connected for controlling temperature in reactor body；The inside of the inner draft tube is arranged in the blender.
Compared with prior art, substep of the invention water inlet sequencing batch reactor is a kind of by anoxic section multistep water inlet benefit The biological reinforced technique of carbon source is filled, which may be implemented livestock and poultry cultivation anaerobic digestion solution (volume V0) anoxia stirring is pressed after water inlet (A1)-aeration (O1)-anoxia stirring (A2)-aeration (O2) batch-type mode is run, by controlling SFSBR reactor process Service condition realizes short-cut nitrification and denitrification.
Further, the stoste water inlet and anaerobic digestion solution water inlet are respectively arranged with into water metering pump；It is described go out The mouth of a river has 3, and each water outlet is provided with solenoid valve, and the mud discharging mouth is also equipped with solenoid valve；It further include process control Device, described program controller are electrically connected with water inlet metering pump, each solenoid valve and blender respectively.Cyclelog and each electromagnetism Automated intelligent control may be implemented in the connection of valve and metering pump.
The present invention also provides a kind of methods for handling waste water of livestock poultry anaerobic digestion solution, use substep water inlet sequence described above Batch reactor is realized, and is based on to the denitrogenation dephosphorizing process on substep water inlet sequencing batch reactor of anaerobic digestion solution The electronic measurement balance coupling control of Chemical Measurement, it is useless in the livestock and poultry cultivation that anoxic phases addition and electron acceptor amount match Water the amount of the stock solution solves the electron donor demand of denitrogenation dephosphorizing process, real on the basis of system carbon source and basicity self-balancing utilize The qualified discharge of existing low ratio of carbon to ammonium livestock and poultry cultivation anaerobic digestion solution.
Further, the method specifically comprises the following steps:
1) first step fill phase: by V0The anaerobic digestion solution and V of volume1The livestock breeding wastewater stoste of volume passes through respectively Anaerobic digestion solution water inlet and stoste water inlet enter reactor body；
2) anoxia stirring A1: turn on agitator carries out muddy water mixing；Denitrification mainly occurs in the stage reactors and releases Phosphorus effect；Heterotrophic denitrifying Bacteria is by the nitrite nitrogen (NO in reactor2 -- N) it is converted into N2；PolyP bacteria PAOs carries out releasing phosphorus work With cell cohesion phosphorus is hydrolyzed to orthophosphates；
3) aeration phase O1: starting external aeration pump, carries out blast aeration to reactor body by aerator；Good Under the conditions of oxygen, Autotrophic nitrification bacterium carry out short distance nitration effect, by the first step intake in ammonia nitrogen (NH4 +- N) it is converted into nitrous state Nitrogen；PolyP bacteria carries out inhaling phosphorus effect, and phosphate is excessively absorbed from sewage；
4) second step fill phase: by V2The stoste of volume enters reactor body through stoste water inlet；
5) anoxia stirring A2: turn on agitator carries out muddy water mixing, occurs in reactor anti-based on denitrification Process is answered, anoxia stirring continues 8h；Under the conditions of anoxia stirring, heterotrophic denitrifying Bacteria utilizes the easy biology drop in second step water inlet Organic matter is solved as electron donor, the aeration phase O1 nitrite nitrogen accumulated is reduced to N2, while realizing and organic matter is gone It removes, and covers basicity for system；
6) aeration phase O2: starting external aeration pump, carries out blast aeration, control to reactor body by aerator Dissolved oxygen concentration is in 1.0~1.5mg/L in reactor, and the reaction process based on acting on short distance nitration occurs in reactor, It is aerated and continues 3h；Under aerobic condition, Autotrophic nitrification bacterium carries out short distance nitration effect, further removes first step water inlet and second Ammonia nitrogen in stepping water；
7) stand the stage: the muddy water mixed solution in reactor is separated in three phase separator by gravitational settling, wherein dirty It is muddy and slippery to enter to bore bottom, it is discharged from mud discharging mouth, supernatant is to be discharged；
8) bleeding stage: the supernatant after standing sedimentation separation is discharged from water outlet.
Further, the conditional parameter V of the electronic measurement balance coupling control realization system utilization of carbon source balance0、V1With V2It can be calculated by electronic measurement balance theory:
(XN·V0+SN·V1) × 2.3=SBOD·V2
[SN·V2·(1-x)+SN·V1+XN·V0] × 4=SCOD·V1+XCOD·V0
In formula: V0、V1And V2It is former to respectively represent anaerobic digestion solution water inlet volume, anoxic section A1 stoste volume and anoxic section A2 Liquid product；SN、SCODAnd SBODRespectively represent the NH of livestock breeding wastewater stoste4 +- N, COD and BOD5Concentration；XN、 XCODGeneration respectively The NH of table livestock breeding wastewater anaerobic digestion solution4 +- N and COD concentration；X represents SFSBR System drainage volume ratio；V represents reactor Dischargeable capacity.
Further, the reactor realizes that the condition of system basicity self-balancing is system basicity within a cycle of operation Supply should be not less than basicity consumption:
[SN·V2·(1-x)+XN·V0+SN·V1]×3.57+XALK·V0+SALK·(V1+V2)
≥[XN·V0+SN·(V1+V2)]×7.14
In formula: SALKAnd XALKRespectively represent the basicity value of livestock breeding wastewater stoste and anaerobic digestion solution, V0、V1And V2Point Anaerobic digestion solution water inlet volume, anoxic section A1 stoste volume, anoxic section A2 stoste volume are not represented；SNRepresent livestock breeding wastewater The NH of stoste4 +- N concentration；XNRepresent the NH of livestock breeding wastewater anaerobic digestion solution4 +- N concentration；X represents SFSBR System drainage body Product ratio.
Further, the COD of step 1) the livestock and poultry cultivation anaerobic digestion solution is 1300~1700mg/L, ammonia nitrogen 700 ~800mg/L, total phosphorus are 45~55mg/L；The COD of step 1) and step 4) the livestock breeding wastewater stoste is 7000~ 9000mg/L, ammonia nitrogen are 650~750mg/L, and total phosphorus is 55~65mg/L.
Further, for 24 hours, the step 1) flooding time is 5min to one cycle of operation duration of the SFSBR reactor, Step 2) anoxia stirring A1 is 4h；Step 3) aeration phase O1 is 8h, step 5) anoxia stirring (A2) 8h；Step 6) is aerated rank Section O2 is 3h, and it is 20min that step 7) and step 8), which are stood, draining 5min, idle 30min；Reactor displacement of volume ratio is 30%, Hydraulic detention time is 4d.
Further, the reactor aeration phase O1, aeration phase O2 Dissolved Oxygen concentration Control 1.0~ 1.5mg/L, pH maintain 7.5~8.5；The reactor mixed liquor sludge concentration MLSS maintains 4000~5000mg/L, dirty The mud residence time controls in 20~25d；The reaction temperature of the SFSBR reactor is controlled at 25~35 DEG C.
The present invention compared with the prior art have following advantages and effects
(1) biochemical processing of the present invention uses SFSBR reactor for treatment anaerobic digestion solution, by controlling SFSBR Reactor internal boundary condition realizes short-cut nitrification and denitrification, can save 38% denitrification compared to complete nitration denitrification process The carbon source of required consumption, the electronic measurement balance control being more advantageous in denitrification process, while the required energy consumption of aeration is reduced, it reaches To the purpose of the consumption of low ratio of carbon to ammonium livestock breeding wastewater low-carbon-source, low energy consumption processing.
(2) main body structure of the biochemical processing of the present invention using substep water inlet sequencing batch reactor as biochemical reaction Object is built, inside reactor is equipped with inner draft tube and separator may make up interior circulation and realize gas-water separation, to biochemical reaction process Mass transfer and mixed characteristic efficiently strengthened, it is big on the basis of the abundance and biomass of microbial population in promoting reactor Amplitude improves the rate of biochemical reaction, realizes the rate-matched of oxidation operation and denitrogenation dephosphorizing process, is significantly promoted organic Object oxidation and denitrogenation dephosphorizing efficiency guarantee that effluent quality is up to standard.
(3) biochemical processing of the present invention is process object with anaerobic digestion solution, without additionally adding to SFSBR system Add organic carbon source and basicity, uses in such a way that livestock breeding wastewater stoste replaces additional carbon, reduce cost for wastewater treatment SFSBR system carbon source, the self-balancing of basicity are realized simultaneously, solve livestock and poultry cultivation anaerobic digestion solution during subsequent biological treatment Carbon source, the serious unbalance problem of basicity.
(4) biochemical processing of the present invention be by using anaerobic-aerobic-anaerobic-aerobic substep alternately into Water sequencing batch reactor technique realizes, waste water undergo in reactor assembly the biodegrade of organic matter, biological phosphate-eliminating and Three processes of biological nitration-denitrification biological denitrogenation realize that synchronous denitrification dephosphorizing removes the target of carbon in same reactor, and The technique is easy to operate without carrying out mixed liquor reflux and sludge reflux.
In order to better understand and implement, the invention will now be described in detail with reference to the accompanying drawings.
Detailed description of the invention
Fig. 1 is substep water inlet sequencing batch reactor schematic device of the invention.
In figure, 1, reactor body；2, three phase separator；3, temperature controller；4, water inlet metering pump one；5, stoste water inlet； 6, water inlet metering pump two；7, anaerobic digestion solution water inlet；8, cyclelog；9, bottom is bored；10, aerator；11, aeration pump； 12, solenoid valve four；13, temperature controller；14, water outlet one；15, solenoid valve one；16, water outlet two；17, solenoid valve two；18, interior to lead Flow cartridge；19, solenoid valve three；20, water outlet three；21, blender.
Specific embodiment
Below with reference to embodiment, present invention is further described in detail
The present invention is in water quality and treatment characteristic to existing low ratio of carbon to ammonium livestock and poultry cultivation anaerobic digestion solution and existing similar Wastewater treatment scheme go deep into proposing after the comparative study of system the innovative design to anaerobic digestion solution biochemical processing, by It is realized using the aerobic substep water inlet sequencing batch reactor technique alternately of anoxic-aerobic-anaerobic-.
As shown in FIG. 1, FIG. 1 is substep of the invention water inlet sequencing batch reactor schematic device, the reactor includes Reactor body 1, cone bottom 9, three phase separator 2, inner draft tube 18 and aerator 10.The reactor body 1 is in hollow circle Column and both ends are open respectively；Inside reactor is equipped with inner draft tube 18, and three phase separator 2 is connected with above inner draft tube. The inner draft tube and three phase separator can be affixed from top by a connecting bracket (not shown), which is existing There is technology, repeats no more herein.
Cone bottom 9 is connected with below reactor body, the cone bottom 9 is communicated with reactor.The cone bottom center setting aeration Device 10, aerator 10 are connected by aeration tube with external aeration pump 11.9 side of cone bottom of the reactor is equipped with spoil disposal Mouth 13, mud discharging mouth 13 is equipped with solenoid valve 4 12.
The reactor be equipped with stoste water inlet 5 and anaerobic digestion solution water inlet 7, respectively with water inlet metering pump 1 and into Water metering pump 26 is connected；Anaerobic digestion solution water inlet 7 is installed on cone bottom 9 and 1 junction of reactor body, and stoste water inlet 5 is pacified Loaded on 1 side of reactor body；According to different drainings than at 1 side different height of reactor body be equipped with water outlet 1, Water outlet 2 16 and water outlet 3 20 are separately installed with solenoid valve 1, solenoid valve 2 17 and solenoid valve 3 19.
The reactor is additionally provided with temperature controller 3, blender 21 and cyclelog 8；The temperature controller inside reactor connects The temperature for controlling inside reactor is connect, the inside of inner draft tube is arranged in the blender, and similarly, fixed connection mode is also The prior art.The aeration pump 11, water inlet metering pump 1, water inlet metering pump 26, solenoid valve 1, solenoid valve 2 17, electromagnetism Valve 3 19, solenoid valve 4 12 and blender 21 are electrically connected with cyclelog 8, and control reactor is arranged by time-program(me) Inlet and outlet water and operating status.
The operation timing of substep water inlet sequencing batch reactor is successively are as follows: first step water inlet, first time anoxia stirring (A1), the Primary aeration (O1), second step water inlet, second of anoxia stirring (A2), second of aeration (O2), standing and draining.Pass through control The boundary conditions such as ORP, pH, DO of aerobic environment realize short-cut nitrification and denitrification in SFSBR reactor.Reactor dischargeable capacity is 5.3L, displacement of volume ratio are 30%.
A kind of method of processing waste water of livestock poultry anaerobic digestion solution of the invention uses substep water inlet batch-type described above Reactor is realized, by carrying out accurate electronic measurement balance coupling meter to substep water inlet sequencing batch reactor denitrogenation dephosphorizing process It calculates and control, solves denitrogenation dephosphorizing process in the livestock breeding wastewater stoste that anoxic phases addition matches with electron acceptor amount Electron donor demand, effectively promoted denitrogenation dephosphorizing efficiency while reduce cost for wastewater treatment.Without adding organic carbon source outside And the self-balancing of system carbon source and basicity is realized in the case where basicity；Pass through the margin status of process in control SFSBR reactor Realize short-cut nitrification and denitrification, carbon source needed for saving denitrification while reducing aeration energy consumption consumes, and is being not necessarily to external source carbon source The processing up to standard of anaerobic digestion solution is realized in the case where addition, low energy consumption.Concrete methods of realizing the following steps are included:
1) first step fill phase: by V0The anaerobic digestion solution and V of volume1The livestock breeding wastewater stoste of volume passes through respectively Anaerobic digestion solution water inlet and stoste water inlet enter reactor body.Stop water inlet to the scheduled time.
2) anoxia stirring A1: turn on agitator carries out muddy water mixing；Denitrification mainly occurs in the stage reactors and releases Phosphorus effect；Heterotrophic denitrifying Bacteria is by the nitrite nitrogen (NO in reactor2 -- N) it is converted into N2；PolyP bacteria PAOs carries out releasing phosphorus work With cell cohesion phosphorus is hydrolyzed to orthophosphates.Stop reaction to the scheduled time, into the aeration phase O1 stage.
3) aeration phase O1: starting external aeration pump, carries out blast aeration to reactor body by aerator；Good Under the conditions of oxygen, Autotrophic nitrification bacterium carry out short distance nitration effect, by the first step intake in ammonia nitrogen (NH4 +- N) it is converted into nitrous state Nitrogen；PolyP bacteria carries out inhaling phosphorus effect, and phosphate is excessively absorbed from sewage, until the scheduled time stops reaction.
4) second step fill phase: by V2The stoste of volume enters reactor body through stoste water inlet.When extremely scheduled Between stop water inlet, into the A2 stage.
5) anoxia stirring A2: turn on agitator carries out muddy water mixing, occurs in reactor anti-based on denitrification Process is answered, anoxia stirring continues 8h；Under the conditions of anoxia stirring, heterotrophic denitrifying Bacteria utilizes the easy biology drop in second step water inlet Organic matter is solved as electron donor, the aeration phase O1 nitrite nitrogen accumulated is reduced to N2, while realizing and organic matter is gone It removes, and covers basicity for system, until the scheduled time stops reaction.
6) aeration phase O2: starting external aeration pump, carries out blast aeration, control to reactor body by aerator Dissolved oxygen concentration is in 1.0~1.5mg/L in reactor, and the reaction process based on acting on short distance nitration occurs in reactor, It is aerated and continues 3h；Under aerobic condition, Autotrophic nitrification bacterium carries out short distance nitration effect, further removes first step water inlet and second Ammonia nitrogen in stepping water.Stop reaction to the scheduled time, into the stage of standing.
7) stand the stage: the muddy water mixed solution in reactor is separated in three phase separator by gravitational settling, wherein dirty It is muddy and slippery to enter to bore bottom, it is discharged from mud discharging mouth, supernatant is to be discharged.
8) bleeding stage: the supernatant after standing sedimentation separation is discharged from water outlet.
Specifically, the COD of step 1) the livestock and poultry cultivation anaerobic digestion solution be 1300~1700mg/L, ammonia nitrogen be 700~ 800mg/L, total phosphorus are 45~55mg/L；The COD of step 1) and step 4) the livestock breeding wastewater stoste is 7000~ 9000mg/L, ammonia nitrogen are 650~750mg/L, and total phosphorus is 55~65mg/L.
Specifically, one cycle of operation duration of the SFSBR reactor is for 24 hours, the step 1) flooding time is 5min, step Rapid 2) anoxia stirring A1 is 4h；Step 3) aeration phase O1 is 8h, step 5) anoxia stirring (A2) 8h；Step 6) aeration phase O2 is 3h, and it is 20min that step 7) and step 8), which are stood, draining 5min, idle 30min；Reactor displacement of volume ratio is 30%, water The power residence time is 4d.
Specifically, the reactor aeration phase O1, aeration phase O2 Dissolved Oxygen concentration Control in 1.0~1.5mg/ L, pH maintain 7.5~8.5；The reactor mixed liquor sludge concentration MLSS maintains 4000~5000mg/L, sludge retention Time controls in 20~25d；The reaction temperature of the SFSBR reactor is controlled at 25~35 DEG C.
Specifically, the conditional parameter V of the electronic measurement balance coupling control realization system utilization of carbon source balance0、V1And V2 It can be calculated by electronic measurement balance theory:
(XN·V0+SN·V1) × 2.3=SBOD·V2
[SN·V2·(1-x)+SN·V1+XN·V0] × 4=SCOD·V1+XCOD·V0
Three above formula is derived and is illustrated now:
The electronic measurement balance coupling control biochemical treatment skill of low ratio of carbon to ammonium livestock and poultry cultivation anaerobic digestion solution of the present invention Art realizes that core is anaerobic digestion solution inflow (V by using SFSBR reactor0), anoxic section A1 stoste inflow (V1) and anoxic section A2 stoste inflow (V2) three parameters determination.Pass through biological carbon and phosphorous removal process in SFSBR reactor Analysis, the process of A1 discrete consuming carbon source mainly includes denitrification and anaerobic phosphorus release, and the process of A2 discrete consuming carbon source is mainly Denitrification.Assuming that SFSBR each " anoxic-aeration " realizes complete denitrification-short distance nitration in the stage, balanced according to electronic measurement Theory, denitrifying bacterium restore 1gNO2 -- N needs 1.53g methanol (being equivalent to 2.30gCOD, consider cell synthesis), in system NO2 -- N is by NH4 +- N is transformed by 1:1, therefore the calculating of electron acceptor total amount can be with X in A2 stage systemN·V0+SN·V1Come It indicates.BOD in second step water inlet stoste is the electron donor amount supplemented of system A2 stage with SBOD·V2To indicate.The A2 stage Practical carbon source supplement should meet theoretical carbon source demand, obtain formula (1):
(XN·V0+SN·V1) × 2.3=SBOD·V2 (1)
The A1 stage needs to consider influence of the carbon-nitrogen ratio to phosphorus process is released, and generally believes that raising carbon-nitrogen ratio may advantageously facilitate and releases phosphorus Effect.Generally as C/N >=4, anaerobic phosphorus release process can be normally carried out, and COD total amount includes anaerobic digestion solution in A1 stage system Influent COD amount and first step stoste influent COD amount, respectively with XCOD·V0And SCOD·V1To indicate；The total amount of N includes in system Anaerobic digestion solution water inlet NH4 +- N amount, first step stoste water inlet NH4 +- N is measured and was remained in reaction after a upper cycle of operation NO in device2 -- N measures (remaining NO2 -- N is by the NH in the water inlet of upper period second step stoste4 +- N is transformed by 1:1), point Not with XN·V0、SN·V1And SN·V2(1-x) is indicated, is obtained formula (2):
[SN·V2·(1-x)+SN·V1+XN·V0] × 4=SCOD·V1+XCOD·V0 (2)
Formula (3) are obtained than definition further according to displacement of volume:
In above three formula: SN、SCOD、SBODRespectively represent the NH of livestock breeding wastewater stoste4 +- N, COD and BOD5Concentration；XN、 XCODRespectively represent the NH of livestock and poultry cultivation anaerobic digestion solution4 +- N and COD concentration；X represents SFSBR System drainage volume ratio；V is represented Reactor dischargeable capacity.
Association type (1), (2), (3), that is, can determine V0、V1、V2Value.
Specifically, the reactor realizes that the condition of system basicity self-balancing is system basicity within a cycle of operation Supply should be not less than the consumption of basicity:
[SN·V2·(1-x)+XN·V0+SN·V1]×3.57+XALK·V0+SALK·(V1+V2)
≥[XN·V0+SN·(V1+V2)]×7.14
In formula: SALKAnd XALKRespectively represent the basicity value of livestock breeding wastewater stoste and anaerobic digestion solution, V0、V1And V2Point Anaerobic digestion solution water inlet volume, anoxic section A1 stoste volume, anoxic section A2 stoste volume are not represented；SNRepresent livestock breeding wastewater The NH of stoste4 +- N concentration；XNRepresent the NH of livestock breeding wastewater anaerobic digestion solution4 +- N concentration；X represents SFSBR System drainage body Product ratio.
Above-mentioned formula is made inferences and illustrated now: the consumption of the SFSBR system basicity occurs mainly in short distance nitre Change process.Autotrophic nitrification bacterium (short distance nitration bacterium) needs to consume dissolved oxygen and alkali during nitrification (short distance nitration effect) Degree considers cell synthesis, and stoichiometric relationship formula is as follows:
NH4 ++1.83O2+1.97HCO3 -→0.0244C5H7O2N+0.976NO3 -+2.9H2O+1.86CO2
Autotrophic nitrification bacterium aoxidizes 1gNH4 +The amount of consumption basicity needed for-N is 7.14gCaCO3, NO2 -- N is oxidized to NO3 --N Process do not need consumption basicity, therefore aoxidize same amount of NH4 +- N, the theoretical alkalinity value and nitrification of the consumption of short distance nitration process Process is identical.The source of SFSBR system basicity mainly includes water inlet and denitrification process.Heterotrophic denitrifying Bacteria is in denitrification process Basicity is generated while middle consumption carbon source, considers cell synthesis, and stoichiometric relationship formula is as follows:
0.494C4H6O2+NO3 -→0.13CO2+HCO3 -+0.415N2+0.169C5H7O2N+0.39H2O
Heterotrophic denitrifying Bacteria restores 1gNO3 -The amount of basicity produced by-N is 3.57gCaCO3, NO3 -- N is reduced to NO2 --N Process do not generate basicity, therefore restore same amount of NO2 -- N and NO3 -- N, the theoretical alkalinity value that short-cut denitrification process generates It is identical as denitrification process.It can be seen that short-cut denitrification bacterium restores unit quantity NO in SFSBR system2 -Basicity caused by-N Value is insufficient for short distance nitration bacterium oxidizing units amount NH4 +The basicity value consumed needed for-N is needed by first step water inlet and the Basicity value in two stepping water makes up difference, to realize the self-balancing of system basicity.In an operation of SFSBR reactor In period, the supplement of system basicity includes denitrification, the denitrification in A2 stage and the alkali in water inlet in A1 stage Degree, respectively with 3.57SN·V2·(1-x)、3.57·(XN·V0+SN·V1) and XALK·V0+SALK·(V1+V2) indicate； The consumption of system basicity includes the nitrification and the nitrification in O2 stage in O1 stage, respectively with 7.14 (XN·V0+SN· V1) and 7.14SN·V2To indicate.According to the above, SFSBR system supply of basicity within a cycle of operation is answered Consumption not less than basicity is just able to achieve system basicity self-balancing, obtains formula (4):
[SN·V2·(1-x)+XN·V0+SN·V1]×3.57+XALK·V0+SALK·(V1+V2) (4)
≥[XN·V0+SN·(V1+V2)]×7.14
The electronic measurement balance coupling control biochemical treatment skill of low ratio of carbon to ammonium livestock and poultry cultivation anaerobic digestion solution of the present invention Art is realized by intaking sequencing batch reactor technique using the substep of anaerobic-aerobic-anaerobic-aerobic alternately, machine Reason are as follows:
(1) biological denitrificaion: the efficient removal of nitrogen mainly passes through nitre in substep water inlet sequencing batch reactor in anaerobic digestion solution Change with two processes of denitrification and completes.A1 stage, denitrifying bacterium will remain in reactor after a upper cycle of operation NO2 -- N be used as electron acceptor, using the first step intake in organic matter as electron donor, by NO2 -- N is reduced to N2It is same When, it is the O1 stage supplemented with basicity needed for nitrification.The O1 stage, with the progress of biochemical reaction, CODCrAnd CODCr/NH4 +- N is constantly reduced, and is provided good condition for the growth of Autotrophic nitrification bacterium in system and biological nitration effect, is made in waste water NH4 +- N is almost completely converted into NO2 --N.In the A2 stage, denitrifying bacterium is using the organic matter in second step water inlet as electronics The NO that donor, O1 stage accumulate2 -- N is used as electron acceptor, realizes the biochemical reaction based on denitrification process, the final production of denitrogenation Object is with N2Form discharge；The purpose that the A2 stage is arranged is to improve the removal rate of total nitrogen and covers a large amount of basicity for system, The operation steady in a long-term of holding system.O2 stage, the further denitrogenation of SFSBR guarantee the place up to standard of livestock and poultry cultivation anaerobic digestion solution Reason.Since water inlet contains higher the concentration of free ammonia, system is in nitrifying process stable nitrite accumulation easy to form, then leads to Crossing the boundary conditions such as ORP, pH, DO of control aerobic environment, (pH maintains 7.5~8.5, DO and is existed by spinner flowmeter control 1.0~1.5mg/L), it eluriates out nitrite oxidizing bacteria (NOB), enriching ammonia oxidation bacteria (AOB), nitrifying process control is existed NO2 -- N the stage prevents NO2 -- N is oxidized to NO3 -- N realizes short-cut nitrification and denitrification.Therefore, the electronic measurement balance is even Joint control biochemical processing can in low energy consumption, low-carbon-source consumption, without outside plus organic carbon source and basicity in the case where are realized The efficient removal of ammonia nitrogen in anaerobic digestion solution.
(2) biological phosphate-eliminating: its principle is to have anaerobic phosphorus release using PAOs in the system of anaerobic-aerobic alternate run And aerobic excess inhales the characteristic of phosphorus, reduces the concentration of mixed liquor phosphorus in aerobic section largely, eventually by discharge rich phosphorous sludge Achieve the purpose that the dephosphorization from sewage.Under anaerobic, cell cohesion phosphorus is hydrolyzed to orthophosphates by PAOs, and is therefrom obtained Energy, the degradable COD (such as VFA) in absorption system, with being melted into carbon energy storage object Poly-β-hydroxybutyric acid (PHB) intracellular or poly- Beta-hydroxy valeric acid (PHV) etc..Under aerobic condition, PAOs is using molecular oxygen as electron acceptor, oxidative metabolism stock intracellular PHB or PHV etc., and energy is generated, phosphate is excessively absorbed from system, energy is stored in the form of anakinetomer ATP, Middle a part is converted into poly- phosphorus again, stores in as energy intracellular, realizes high-performance bio dephosphorization purpose by the discharge of excess sludge.
Illustrated now by a specific embodiment application method of substep water inlet sequencing batch reactor of the invention with And the method and treatment effect of processing waste water of livestock poultry anaerobic digestion solution.
Embodiment 1
Handled livestock breeding wastewater stoste and anaerobic digestion solution water quality characteristic are as shown in table 1 in the present embodiment:
The water quality characteristic of table 1 livestock breeding wastewater stoste and anaerobic digestion solution
According to electronic measurement EQUILIBRIUM CALCULATION FOR PROCESS, livestock breeding wastewater stoste in table and the index of anaerobic digestion solution are taken in range It is worth substitution formula (1), (2) and (3), obtains:
(750·V0+700·V1) × 2.3=5000V2
[700·V2·(1-0.3)+700·V1+750·V0] × 4=8000V1+1500·V0
Solve V0、V1And V2It respectively may be about 0.8L, 0.4L and 0.4L, substituted into formula (4), SFSBR Systems Theory basicity is mended Charge is greater than consumption (calculated result respectively may be about 9681.3 and 8282.4mg).
Handled low ratio of carbon to ammonium livestock and poultry cultivation anaerobic digestion solution that specific step is as follows using above system:
(1) first step fill phase: 0.8L anaerobic digestion solution is pumped by starting water inlet metering pump 1 through water inlet 1 SFSBR reactor；Starting water inlet metering pump 24, is pumped into SFSBR reactor through water inlet 25 for 0.4L stoste；
(2) the anoxia stirring A1 stage: turn on agitator 21 carries out muddy water mixing, and denitrification mainly occurs in reactor and releases Phosphorus effect, anoxia stirring continue 4h.Denitrifying bacterium is remaining by a upper cycle of operation using organic carbon source abundant in water inlet NO2 -- N is reduced to N2, and generate part basicity；Intracellular poly- phosphorus is hydrolyzed to orthophosphates by PAOs, and therefrom obtains energy, Degradable COD in absorption system stores object with the energy intracellular is melted into；
(3) the aeration phase O1 stage: starting aeration pump 11 carries out blast aeration, control to reactor by aerator 10 Dissolved oxygen concentration is in 1.0~1.5mg/L in the O1 stage in reactor processed, and short distance nitration mainly occurs in reactor and inhales phosphorus work With aeration continues 8h.Waste water in reactor inner draft tube 18 flows up under the impetus of gas, the three-phase at top Pass through gas-water separation in separator 2, waste water and sludge enter the area reactor Jiang Liu, flows from top to bottom, constitute in inside reactor Interior circulation realizes efficient mass transfer.AOB is using molecular oxygen as electron acceptor, by the NH in water inlet4 +- N is oxidized to NO2 -- N, and Consumption system basicity；For PAOs using molecular oxygen as electron acceptor, the oxidative metabolism energy intracellular stores object, and generates energy, excessive Phosphate is absorbed from waste water in ground；
(4) second step fill phase: it is anti-through water inlet 25 to be pumped into SFSBR by starting water inlet metering pump 24 for 0.4L stoste Answer device；
(5) the anoxia stirring A2 stage: turn on agitator 21 carries out muddy water mixing, and the interior generation of reactor is with denitrification Main reaction process, anoxia stirring continue 8h.Heterotrophic denitrifying Bacteria and PAOs compete organic carbon source, and stage PAOs releases phosphorus effect It is weaker.The NO that denitrifying bacterium is accumulated the O1 stage using the organic carbon source in second step water inlet2 -- N is reduced to N2, and generate a large amount of Basicity；
(6) the aeration phase O2 stage: starting aeration pump 11 carries out blast aeration, control to reactor by aerator 10 Dissolved oxygen concentration is in 1.0~1.5mg/L in the O2 stage in reactor processed, occur to act on short distance nitration in reactor based on Reaction process is aerated and continues 3h；
(7) stand the stage: the muddy water mixed solution in reactor is separated in three phase separator 2 by gravitational settling, wherein Sludge slides into cone bottom 9, and supernatant is to be discharged；If sludge quantity is excessive in system, can be periodically discharged from mud discharging mouth 13 a small amount of remaining dirty Mud；
(8) bleeding stage: the supernatant after standing sedimentation separation is under the conditions of 30% displacement of volume ratio from water outlet 2 16 Discharge.
The effect for handling anaerobic digestion solution by above-mentioned biochemical processing is as shown in table 2:
2 SFSBR of table is to anaerobic digestion solution treatment effect
From table 2 it can be seen that after biochemical processing of the present invention processing, ammonia nitrogen, total phosphorus in anaerobic digestion solution And the removal effect of organic pollutant is obvious.
By different control parameter experimental studies, SFSBR intakes organic loading as 0.93~1.23kgCOD/ (m3D), Ammonia nitrogen loading is 0.17~0.20kg/ (m3D), sludge ammonia load is 0.05~0.07kg/ (kgVSSd), when hydraulic retention Between be 4d, 97%, 82% and 70% or more is respectively reached to the removal rate of ammonia nitrogen, total phosphorus and organic matter.Therefore, electronic measurement Balance coupling control biochemical processing can realize the processing up to standard of anaerobic digestion solution on the basis of carbon source, basicity self-balancing, The requirement of effluent quality satisfaction " livestock and poultry breeding industry pollutant emission standard " (GB/T18596-2001) emission limit.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention Range.

Claims (9)

  1. Sequencing batch reactor, including reactor body 1. a kind of substep for handling waste water of livestock poultry anaerobic digestion solution is intake, feature It is: further includes three phase separator and inner draft tube, the three phase separator and inner draft tube is separately positioned on reactor body It is interior, and the three phase separator is located at the top of inner draft tube；
    Further include a cone bottom, communicates and connect below the cone bottom and reactor body；It is additionally provided at the cone bottom center One aerator；The aerator is connected with external aeration pump；
    The side of the reactor body be equipped with stoste water inlet and anaerobic digestion solution water inlet, the other side along reactor body not With being provided with several water outlets at height；The side at the cone bottom is additionally provided with mud discharging mouth；
    It further include temperature controller and blender, the inside connection of the temperature controller and reactor body is for controlling in reactor body Temperature；The inside of the inner draft tube is arranged in the blender.
  2. The sequencing batch reactor 2. a kind of substep for handling waste water of livestock poultry according to claim 1 is intake, it is characterised in that: institute It states stoste water inlet and anaerobic digestion solution water inlet is respectively arranged with into water metering pump；The water outlet has 3, each water outlet It is provided with solenoid valve, the mud discharging mouth is also equipped with solenoid valve；Further include cyclelog, described program controller respectively with Water inlet metering pump, each solenoid valve and blender electrical connection.
  3. 3. a kind of method for handling waste water of livestock poultry anaerobic digestion solution, it is characterised in that: intake using substep described in claim 1 Sequencing batch reactor is realized, and carries out base to the denitrogenation dephosphorizing process on the substep water inlet sequencing batch reactor of anaerobic digestion solution In the electronic measurement balance coupling control of Chemical Measurement, in the livestock and poultry cultivation that anoxic phases addition matches with electron acceptor amount Waste water the amount of the stock solution solves the electron donor demand of denitrogenation dephosphorizing process, system carbon source and basicity self-balancing utilize on the basis of Realize the qualified discharge of low ratio of carbon to ammonium livestock and poultry cultivation anaerobic digestion solution.
  4. 4. a kind of method for handling waste water of livestock poultry anaerobic digestion solution according to claim 3, it is characterised in that: specifically include Following steps:
    1) first step fill phase: by V0The anaerobic digestion solution and V of volume1The livestock breeding wastewater stoste of volume is respectively through anaerobism Digestive juice water inlet and stoste water inlet enter reactor body；
    2) anoxia stirring A1: turn on agitator carries out muddy water mixing；Denitrification mainly occurs in the stage reactors and releases phosphorus work With；Heterotrophic denitrifying Bacteria is by the nitrite nitrogen (NO in reactor2 -- N) it is converted into N2；PolyP bacteria PAOs carries out releasing phosphorus effect, Cell cohesion phosphorus is hydrolyzed to orthophosphates；
    3) aeration phase O1: starting external aeration pump, carries out blast aeration to reactor body by aerator；In aerobic item Under part, Autotrophic nitrification bacterium carry out short distance nitration effect, by the first step intake in ammonia nitrogen (NH4 +- N) it is converted into nitrite nitrogen；It is poly- Phosphorus bacterium carries out inhaling phosphorus effect, and phosphate is excessively absorbed from sewage；
    4) second step fill phase: by V2The stoste of volume enters reactor body through stoste water inlet；
    5) anoxia stirring A2: turn on agitator carries out muddy water mixing, and the reaction based on denitrification occurs in reactor Journey, anoxia stirring continue 8h；Under the conditions of anoxia stirring, heterotrophic denitrifying Bacteria using second step intake in easily biological-degradable have Machine object is reduced to N as electron donor, by the aeration phase O1 nitrite nitrogen accumulated2, while realizing the removal to organic matter, and Basicity is covered for system；
    6) aeration phase O2: starting external aeration pump, carries out blast aeration, control reaction to reactor body by aerator Dissolved oxygen concentration is in 1.0~1.5mg/L in device, and the reaction process based on acting on short distance nitration, aeration occur in reactor Continue 3h；Under aerobic condition, Autotrophic nitrification bacterium carries out short distance nitration effect, further removes first step water inlet and the second stepping Ammonia nitrogen in water；
    7) stand the stage: the muddy water mixed solution in reactor is separated in three phase separator by gravitational settling, and wherein sludge is sliding Enter to bore bottom, be discharged from mud discharging mouth, supernatant is to be discharged；
    8) bleeding stage: the supernatant after standing sedimentation separation is discharged from water outlet.
  5. 5. a kind of method for handling waste water of livestock poultry anaerobic digestion solution according to claim 4, it is characterised in that: the electronics The conditional parameter V of metering balance coupling control realization system utilization of carbon source balance0、V1And V2Electronic measurement balance theory can be passed through It is calculated:
    (XN·V0+SN·V1) × 2.3=SBOD·V2
    [SN·V2·(1-x)+SN·V1+XN·V0] × 4=SCOD·V1+XCOD·V0
    In formula: V0、V1And V2Respectively represent anaerobic digestion solution water inlet volume, anoxic section A1 stoste volume and anoxic section A2 primary liquid Product；SN、SCODAnd SBODRespectively represent the NH of livestock breeding wastewater stoste4 +- N, COD and BOD5Concentration；XN、XCODRespectively represent livestock and poultry The NH of breeding wastewater anaerobic digestion solution4 +- N and COD concentration；X represents SFSBR System drainage volume ratio；V, which represents reactor, effectively to be held Product.
  6. 6. a kind of method for handling waste water of livestock poultry anaerobic digestion solution according to claim 4, it is characterised in that: the reaction Device realizes that the condition of system basicity self-balancing should disappearing not less than basicity for the supply of system basicity within a cycle of operation Consumption:
    [SN·V2·(1-x)+XN·V0+SN·V1]×3.57+XALK·V0+SALK·(V1+V2)≥[XN·V0+SN·(V1+V2)] ×7.14
    In formula: SALKAnd XALKRespectively represent the basicity value of livestock breeding wastewater stoste and anaerobic digestion solution, V0、V1And V2Generation respectively Table anaerobic digestion solution water inlet volume, anoxic section A1 stoste volume, anoxic section A2 stoste volume；SNRepresent livestock breeding wastewater stoste NH4 +- N concentration；XNRepresent the NH of livestock breeding wastewater anaerobic digestion solution4 +- N concentration；X represents SFSBR System drainage volume ratio.
  7. 7. a kind of method of processing waste water of livestock poultry anaerobic digestion solution, feature according to claim 4-6 any one exist In: the COD of step 1) the livestock and poultry cultivation anaerobic digestion solution is 1300~1700mg/L, and ammonia nitrogen is 700~800mg/L, total phosphorus For 45~55mg/L；The COD of step 1) and step 4) the livestock breeding wastewater stoste is 7000~9000mg/L, and ammonia nitrogen is 650~750mg/L, total phosphorus are 55~65mg/L.
  8. 8. a kind of method of processing waste water of livestock poultry anaerobic digestion solution, feature according to claim 4-6 any one exist In: for 24 hours, the step 1) flooding time is 5min, step 2) anoxia stirring to one cycle of operation duration of the SFSBR reactor A1 is 4h；Step 3) aeration phase O1 is 8h, step 5) anoxia stirring (A2) 8h；Step 6) aeration phase O2 is 3h, step 7) Standing with step 8) is 20min, draining 5min, leave unused 30min；Reactor displacement of volume ratio is 30%, and hydraulic detention time is 4d。
  9. 9. a kind of method of processing waste water of livestock poultry anaerobic digestion solution, feature according to claim 4-6 any one exist In: Dissolved Oxygen concentration Control of the reactor in aeration phase O1, aeration phase O2 is maintained in 1.0~1.5mg/L, pH 7.5~8.5；The reactor mixed liquor sludge concentration MLSS maintains 4000~5000mg/L, and sludge retention time control exists 20~25d；The reaction temperature of the SFSBR reactor is controlled at 25~35 DEG C.
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