CN105859040A - Method and equipment for nitrogen and phosphorus removal of municipal wastewater - Google Patents
Method and equipment for nitrogen and phosphorus removal of municipal wastewater Download PDFInfo
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- CN105859040A CN105859040A CN201610327407.4A CN201610327407A CN105859040A CN 105859040 A CN105859040 A CN 105859040A CN 201610327407 A CN201610327407 A CN 201610327407A CN 105859040 A CN105859040 A CN 105859040A
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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
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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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
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
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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
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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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
- C02F3/302—Nitrification and denitrification treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
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Abstract
The invention discloses a device and equipment for nitrogen and phosphorus removal of municipal wastewater. Municipal wastewater is introduced to a denitrifying phosphorus removal reactor, according to the content of a nitrogen oxide in a reflux liquid which reflows to the denitrifying phosphorus removal reactor from an anaerobic ammonia oxidation reactor, anaerobic/anoxic nitrogen and phosphorus removal or anaerobic/aerobic phosphorus removal is carried out, then outlet water of the denitrifying phosphorus removal reactor is introduced to a middle sedimentation tank for separating mud and water, a part of sludge reflows to the denitrifying phosphorus removal reactor, and the remaining sludge is discharged; outlet water of the middle sedimentation tank is distributed through a shunt, a part of outlet water of the middle sedimentation tank enters a shortcut nitrification reactor to carry out shortcut nitrification, and the other part of outlet water of the middle sedimentation tank enters the anaerobic ammonia oxidation reactor to carry out autotrophic nitrogen removal; the water quality of outlet water of the anaerobic ammonia oxidation reactor is monitored in real time, and outlet water partly reflows to the shortcut nitrification reactor or the denitrifying phosphorus removal reactor to further remove nitrogen. The wastewater treatment device disclosed by the invention has high efficiency, low energy consumption, low cost and stable treatment effect, and the water quality of outlet water is far superior to requirements of the national first-grade A standard.
Description
Technical field
The present invention relates to a kind of municipal sewage denitrification and dephosphorization method and equipment, belong to urban sewage treatment technology field.
Background technology
Water resource, energy shortage and quality of water environment go from bad to worse, and have become as the bottleneck of socio-economic development, improve
Wastewater treatment rate and degree for the treatment of, the denitrogenation dephosphorizing usefulness of raising sewage treatment plant, the energy consumption of reduction sewage disposal have become to be worked as
It is engaged in anxious.In traditional sewage disposal technology, denitrification process and dephosphorization process are in response matrix (carbon source) and reaction compartment side
There is competition and contradiction in face, is difficult to obtain good N, P removal effect simultaneously, generally requires a large amount of external energies of consuming and just can obtain
Obtain relatively satisfactory effect.
In recent years, in order to solve tradition denitrogenation dephosphorizing process present in problem, as the most only in denitrogenation and dephosphorization microorganism
Vertical problem, microorganism sludge difference problem in age, the race problem of carbon source, have developed some novel denitrification dephosphorization techniques, for solving
Certainly the contradiction between denitrogenation and dephosphorization provides opportunity.Wherein, denitrification dephosphorization and Anammox denitrogenation technology enjoy domestic
The favor of outer scholar.Denitrification dephosphorization is with NOX-N is electron acceptor, can realize a carbon dual-purpose, reaches the synchronization removal of C/N/P
Effect；Anammox denitrogenation technology is with NH4 +-N and NO2 --N, respectively as electron donor and acceptor, completes under anoxic conditions
The removal of nitrogen, this process, without additional carbon, is neutralized without exogenously added alkali, takes off with tradition whole process biological nitration-denitrification
Nitrogen technology is compared, and Anammox technology can save the oxygen-supplying amount of 62.5% and the alkali consumption of 50%, it is not necessary to consumes organic carbon, and produces
Mud amount is only the 15% of traditional biological denitrification process.Therefore, Anammox technology is the most extensively favored from being found, both at home and abroad
Scholar has carried out substantial amounts of research to this novel biological dinitrification technology, and main process has:
The Chinese patent of Publication No. CN 102557356A provides a kind of half short distance nitration/Anammox municipal sewage and takes off
Nitrogen dephosphorization process and method, by being separated mud by sludge age, it is to avoid the Fast-propagation of heterotroph, it is to avoid to autotrophic denitrification
Flora produces impact, and nitrification uses half section of short distance nitration so that it is be more easy to stably maintaining shortcut, it is ensured that the nitrous of nitrification
Rate, provides safeguard for system denitrogenation stability, then by Anammox technology should in sanitary sewage advanced nitrogen process in,
Oxygen demand reduces by 60% than traditional denitrogenation mode, and without additional carbon, it is not necessary to nertralizer, it is achieved that the city of high-efficiency low energy consumption
Sewage disposal.
The Chinese patent of Publication No. CN 101580329A discloses a kind of municipal sewage anaerobism organics removal and autotrophy
The apparatus and method of biological denitrificaion, this device is provided with raw water box, anaerobic reactor, dephosphorizing reactor, medium sediment pool, half short distance nitration
Reactor, second pond, intermediate pool, anaerobic ammonia oxidation reactor；Anaerobic reactor is the anaerobic organism filter loading sponge filler
Pond；Dephosphorizing reactor the 1st compartment is anaerobic zone, and remaining 4 compartment is aerobic zone；Half short distance nitration reactor is provided with 1 and lacks
Oxygen district and 4 aerobic zones；Anaerobic ammonia oxidation reactor is provided with column reactant and water bath sleeve.The method utilizing this device: l) will
The activated sludge obtained from sewage treatment plant is added to dephosphorizing reactor and short distance nitration reactor；2) first municipal sewage pumps into
In anaerobic reactor；3) anaerobic reactor water outlet enters into dephosphorizing reactor；4) medium sediment pool is passed through in the water outlet of dephosphorizing reactor
Enter into half short distance nitration reactor.The present invention is applicable to municipal sewage treatment, structure improvement, and technique is advanced, and efficiency is high.
The Chinese patent of Publication No. CN 101531443A discloses a kind of coupling type sewage treatment process, dirty with city
Water is for processing object.This technique will be in the part effluent recycling of aerobic/anaerobic (A/O) to anaerobic reactor (EGSB), same
Time inoculation anaerobic grain sludge and aerobic activated sludge anaerobic reactor (EGSB) in realize Anammox, methanation with anti-
The coupling of nitration reaction, goes removal organic polluter and denitrogenation.The present invention solves existing A2There is carbon in/O technique denitrogenation and dephosphorization
The pH value unbalance that the contradiction of source contention and Anammox cause with anti-nitration reaction, process system strong shock resistance,
Can, hydraulic detention time high in rate of load condensate short under conditions of obtain the COD of stability and high efficiency and remove and Nitrogen/Phosphorus Removal.
Above-mentioned process all have employed the autotrophic denitrification technique of short distance nitration+Anammox, and default de-carbon dephosphorization
System, solves, with this, the contradiction that carbon source is competed by denitrogenation with dephosphorization.But above-mentioned process two problems of existence: 1) by anaerobism
Ammonia oxidation process is as end-o f-pipe-control reactor, according to the stoichiometric relationship of Anammox reaction, possibly together with one in water outlet
, there is certain security risk in quantitative nitrate；2) half short-cut nitrification technology is used, the NH of generation4 +-N and NO2 --N ratio
Instability, and then affect follow-up Anammox reaction process, cause occurring water outlet contains NH4 +-N or NO2 --N。
The present invention develops a kind of municipal sewage denitrification and dephosphorization method and equipment, and one is to use efficient accumulation NO2 --N's is short
Journey nitrator, introduces short distance nitration section and Anammox section multipoint water feeding mechanism, and it is anti-that reasonable distribution enters short distance nitration
Answer the water inlet ratio of device and anaerobic ammonia oxidation reactor, reach the autotrophic denitrification efficiency of efficient stable；Two is by anaerobism ammonia oxygen
Dissolve water and be back to the denitrification dephosphorizing reactor of leading portion, under the conditions of anaerobic/anoxic alternate run, utilize the NO of backflow3 -With
NO2 -As electron acceptor, denitrification process and dephosphorization process are integrated, reaches simultaneous phosphorus and nitrogen removal purpose.
Summary of the invention
It is an object of the invention to provide a kind of municipal sewage denitrification and dephosphorization method and equipment.
The technical solution used in the present invention is:
A kind of municipal sewage denitrification and dephosphorization equipment, including the denitrification dephosphorizing reactor being sequentially connected with by main line, medium sediment pool,
Current divider, short distance nitration reactor and anaerobic ammonia oxidation reactor；It is provided with between described denitrification dephosphorizing reactor and medium sediment pool
Mud in medium sediment pool can be imported the mud return line of denitrification dephosphorizing reactor；Described denitrification dephosphorizing reactor and anaerobism ammonia
The sewage backflow pipe that the water outlet of anaerobic ammonia oxidation reactor can be imported denitrification dephosphorizing reactor it is provided with between oxidation reactor；
The pipe that the water outlet of current divider can be imported anaerobic ammonia oxidation reactor it is provided with between described current divider and anaerobic ammonia oxidation reactor
Road；It is provided with between described short distance nitration reactor and anaerobic ammonia oxidation reactor and the water outlet of anaerobic ammonia oxidation reactor can be imported
The sewage backflow pipe of short distance nitration reactor；Described anaerobic ammonia oxidation reactor is provided with water quality on-line determination instrument and flow-control
Device, and described flow controller is connected with current divider.
Further, described denitrification dephosphorizing reactor is provided with water inlet pipe, mud return line, sewage backflow pipe, water outlet
Pipe, blow-down pipe, aeration facility and stirring facility.
Further, described denitrification dephosphorizing reactor is made up of anaerobic zone and aerobic area, water inlet pipe and mud return line
Being arranged on anaerobic zone, sewage backflow pipe, outlet pipe, blow-down pipe, aeration facility and stirring facility are arranged on aerobic area.
Further, described medium sediment pool is provided with water inlet pipe, outlet pipe and mud return line.
Further, described short distance nitration reactor be provided with water inlet pipe, outlet pipe, mud return line, sewage backflow pipe,
Blow-down pipe, temperature controller, DO analyzer and aeration facility.
Further, described anaerobic ammonia oxidation reactor is provided with water inlet pipe, outlet pipe, blow-down pipe, backwash tube, temperature
Controller.
A kind of municipal sewage denitrification and dephosphorization method, comprises the following steps:
1) denitrification dephosphorizing reactor: municipal sewage (sewage total amount is designated as Q) initially enters denitrification dephosphorizing reactor, Qi Zhongfu
Collection has substantial amounts of denitrifying phosphorus removing bacteria；The anaerobic zone of denitrification dephosphorizing reactor receives the returned sludge of medium sediment pool, anti-nitre simultaneously
The aerobic area changing dephosphorizing reactor receives the phegma of Anammox unit, when nitrogen in the phegma of anaerobic ammonia oxidation reactor
Oxide is more, meet denitrification dephosphorization needed for electron acceptor time, stop aerobic area aeration facility, simultaneously open stirring set
Executing, now denitrification dephosphorizing reactor runs under anaerobic/anoxic operating mode, and denitrifying phosphorus removing bacteria is with the nitrogen oxides in phegma
For electron acceptor, it is achieved remove while nitrogen, phosphorus；When in the phegma of anaerobic ammonia oxidation reactor, nitrogen oxides is less, not enough
During to meet the electron acceptor needed for dephosphorization, stopping stirring, open aeration, now this unit uses aerobic/anaerobic operating mode to run,
Realize the removal of phosphorus；
2) medium sediment pool: the water outlet of denitrification dephosphorizing reactor is introduced medium sediment pool and carries out mud-water separation, the partial sludge of medium sediment pool
(sludge quantity is designated as r) is back to the anaerobic zone of denitrification dephosphorizing reactor, arranges outside remaining mud；
3) current divider: the water outlet of medium sediment pool is introduced current divider, is classified as two parts, Part I water outlet in current divider
(sewage quantity is designated as q1) entering short distance nitration reactor, (sewage quantity is designated as q in Part II water outlet2) enter Anammox reaction
Device, by the water quality on-line determination instrument on anaerobic ammonia oxidation reactor in anaerobic ammonia oxidation reactor water outlet nitrogen form and
Content monitors in real time, and result is exported to flow controller, and regulation enters short distance nitration reactor and Anammox
The sewage ratio of reactor；As NH in water outlet4 +When-N content is higher, it is lowered into the sewage quantity of anaerobic ammonia oxidation reactor；When
NO in water outlet2 -When-N content is higher, improve the sewage quantity entering anaerobic ammonia oxidation reactor；As NO in water outlet3 --N content is higher
Time, improve anaerobic ammonia oxidation reactor and be back to the sewage quantity of denitrification dephosphorizing reactor (sewage quantity is designated as R1)；
4) short distance nitration reactor: be enriched with substantial amounts of ammonia oxidizing bacteria (AOB) in short distance nitration reactor, introduces through current divider
Water inlet carry out high-efficiency short-range nitration at this, then will be enriched in NO2 -The water outlet of-N imports anaerobic ammonia oxidation reactor；
5) anaerobic ammonia oxidation reactor: this reactor uses carrier organism membrane reactor, and carrier is enriched with substantial amounts of anaerobism ammonia
Oxidizing bacteria；It will receive part water outlet and the water outlet of short distance nitration reactor of current divider, at anaerobic ammonia oxidizing bacteria simultaneously
Carry out autotrophy under effect to denitrogenate；A water outlet part for anaerobic ammonia oxidation reactor is back to denitrification dephosphorizing reactor (sewage quantity
It is designated as R1), a part is back to short distance nitration reactor, and (sewage quantity is designated as R2), arrange outside remainder.
Further, medium sediment pool is back to sludge quantity r=20%～50%Q of denitrification dephosphorizing reactor.
Further, the sewage quantity q of short distance nitration reactor is distributed into through current divider1=50%～70%Q.
Further, the sewage quantity q of anaerobic ammonia oxidation reactor is distributed into through current divider2=30%～50%Q.
Further, anaerobic ammonia oxidation reactor effluent recycling is to the sewage quantity R of denitrification dephosphorizing reactor1=50%～
100%Q。
Further, anaerobic ammonia oxidation reactor effluent recycling is to the sewage quantity R of short distance nitration reactor2=50%～100%
Q。
Further, the running temperature of whole system controls at 25～35 DEG C, and the DO of short distance nitration reactor controls 0.3
～1.0mg/L.
The invention has the beneficial effects as follows:
1) denitrification dephosphorizing reactor in the municipal sewage denitrification and dephosphorization equipment of the present invention is divided into anaerobic zone and aerobic area, can
Whether to meet the dephosphorization demand to electron acceptor according to nitrogen oxides in anaerobic ammonia oxidation reactor phegma, judge to use
Anoxic or aerobic condition, be possible not only to realize organic efficient utilization and ensure phosphor-removing effect, simultaneously can also be to detesting
Nitrogen oxides in anaerobic ammonium oxidation reactor water outlet carries out advanced treating；
2) the short distance nitration reactor of the municipal sewage denitrification and dephosphorization equipment of the present invention only needs to control reaction temperature and aeration rate comes
Reach the most sub-nitrogen accumulation, by the shunting of medium sediment pool supernatant, control to enter short distance nitration reactor and anaerobism ammonia
Sewage ratio in oxidation reactor, thus realize efficient autotrophic denitrification process, with existing half short distance nitration reactor phase
Ratio, short distance nitration reactor and the control condition of anaerobic ammonia oxidation reactor in the present invention are the easiest and stable；
3) nitrogen in anaerobic ammonia oxidation reactor water outlet can be formed and content by the municipal sewage denitrification and dephosphorization equipment of the present invention
Monitor in real time, control medium sediment pool supernatant according to the nitrogen content in water outlet and enter short distance nitration reactor and anaerobism ammonia oxygen
Change the ratio of reactor, and realize controlling flexibly of anaerobic ammonia oxidation reactor capacity of returns, thus obtain efficient pollutant and go
Except effect.
Accompanying drawing explanation
Fig. 1 is the municipal sewage denitrification dephosphorization technique flow chart of the present invention.
Fig. 2 is the structural representation of the municipal sewage denitrification and dephosphorization equipment of the present invention.
Accompanying drawing identifier declaration: 1, denitrification dephosphorizing reactor；11, water inlet pipe；12, aeration facility；13, stirring facility；14、
Gas flowmeter；15, blower fan；16, blow-down pipe；2, medium sediment pool；21, pipeline；22, mud return line；23, blow-down pipe；3, shunting
Device；31, pipeline；32, pipeline；33, pipeline；34, flow controller；35, water quality on-line determination instrument；4, short distance nitration reactor；
41, temperature controller；42, DO analyzer；43, gas flowmeter；44, blower fan；45, aeration facility；46, mud return line；47、
Blow-down pipe；5, anaerobic ammonia oxidation reactor；51, pipeline；52, backwash tube；53, temperature controller；54, blow-down pipe；55, water outlet
Pipe；56, sewage backflow pipe；57, sewage backflow pipe.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, the present invention is made further explanation and description.
Embodiment 1: municipal sewage denitrification and dephosphorization equipment
As in figure 2 it is shown, the municipal sewage denitrification and dephosphorization equipment of the present invention, including the denitrification dephosphorization being sequentially connected with by main line
Reactor 1, medium sediment pool 2, current divider 3, short distance nitration reactor 4 and anaerobic ammonia oxidation reactor 5；Described denitrification dephosphorization reacts
Device 1 is connected by pipeline 21 with medium sediment pool 2；Described medium sediment pool 2 is connected by pipeline 31 with current divider 3；Described current divider 3 is with short
Journey nitrator 4 is connected by pipeline 32；Described short distance nitration reactor 4 and anaerobic ammonia oxidation reactor 5 are by pipeline 51
Connect；Being provided with between described denitrification dephosphorizing reactor 1 and medium sediment pool 2 can be by anti-for mud importing denitrification dephosphorization in medium sediment pool 2
Answer the mud return line 22 of device 1；Being provided with between described denitrification dephosphorizing reactor 1 and anaerobic ammonia oxidation reactor 5 can be by anaerobism
The water outlet of ammonia oxidation reactor 5 imports the sewage backflow pipe 57 of denitrification dephosphorizing reactor 1；Described current divider 3 and anaerobism ammonia oxygen
Change and between reactor 5, be provided with the pipeline 33 that the water outlet of current divider 3 can be imported anaerobic ammonia oxidation reactor 5；Described short distance nitration
It is provided with between reactor 4 with anaerobic ammonia oxidation reactor 5 and the water outlet importing short distance nitration of anaerobic ammonia oxidation reactor 5 can be reacted
The sewage backflow pipe 56 of device 4；Described anaerobic ammonia oxidation reactor 5 is provided with water quality on-line determination instrument 35 and flow controller 34,
And flow controller 34 is connected with current divider 3.
Preferably, described denitrification dephosphorizing reactor 1 uses suspension growth activated sludge tank type, is divided into anaerobic zone in pond
With aerobic area, water inlet pipe 11 and mud return line 22 are arranged on anaerobic zone, sewage backflow pipe 57, aeration facility 12, stirring facility
13 and blow-down pipe 16 be arranged on aerobic area, aeration facility 12 is also associated with gas flowmeter 14 and blower fan 15.
Preferably, described medium sediment pool 2 is provided with mud return line 22, and mud return line 22 is provided with blow-down pipe 23.
Preferably, described short distance nitration reactor 4 uses suspension growth activated sludge tank type, embedding mud-water separation in the body of pond
District, is provided with temperature controller 41, DO analyzer 42, aeration arrange 45, mud return line 46 and blow-down pipe 47 in reactor, expose
Gas facility 45 is also associated with gas flowmeter 43 and blower fan 44.
Preferably, described anaerobic ammonia oxidation reactor 5 uses biofilm reactor, is provided with backwash tube 52, temperature control
Instrument 53 processed, blow-down pipe 54 and outlet pipe 55.
The municipal sewage denitrification and dephosphorization equipment of the present invention runs in the following manner: by pretreated municipal sewage through entering
Water pipe 11 imports denitrification dephosphorizing reactor 1, and denitrification dephosphorizing reactor 1 is made up of anaerobic zone and aerobic area, and anaerobic zone is passed through
Mud return line 22 receives the returned sludge in medium sediment pool 2, and aerobic area receives Anammox by sewage backflow pipe 57 and reacts
The phegma of device 5.When in the phegma of anaerobic ammonia oxidation reactor 5, nitrogen oxides is more, needed for denitrification dephosphorization being met
During electron acceptor, stop the aeration facility 12 of the aerobic area of denitrification dephosphorizing reactor 1, open stirring facility 13, the most anti-nitre
Change in dephosphorizing reactor 1 denitrifying phosphorus removing bacteria of enrichment with the nitrogen oxides in phegma as electron acceptor, now use anaerobism/
Anoxic operating mode is run, it is achieved remove while nitrogen, phosphorus；When in the phegma of anaerobic ammonia oxidation reactor 5, nitrogen oxides is less, no
When being sufficient for the electron acceptor needed for dephosphorization, close stirring facility 13, open aeration facility 12, now use aerobic/anaerobic
Operating mode is run, it is achieved the removal of phosphorus；Mixed liquor in denitrification dephosphorizing reactor 1 21 enters medium sediment pool 2, at medium sediment pool by the road
Carrying out mud-water separation in 2, wherein mud is partly refluxed to the anaerobic zone of denitrification dephosphorizing reactor 1 through mud return line 22, on
Clear liquid 31 enters current divider 3 by the road, shunts through current divider 3, and a part of sewage is entered short distance nitration reactor 4 by pipeline 32,
A part of sewage is entered anaerobic ammonia oxidation reactor 5 by pipeline 33；The assignment of traffic ratio of pipeline 32 and pipeline 33 is by flow control
The NH of the anaerobic ammonia oxidation reactor 5 that device 34 processed detects according to water quality on-line determination instrument 354 +-N content determines；32 enter by the road
The sewage entering short distance nitration reactor 4 carries out short distance nitration reaction at this, makes the NH in sewage4 +-N is converted into NO2 ˉ-N, short distance
Being provided with between aerobic zone and settling zone in nitrator 4 can be by the sludge reflux pipeline of settling zone sludge reflux to aerobic zone
46, the sewage in short distance nitration reactor 4 51 enters anaerobic ammonia oxidation reactor 5, in anaerobic ammonia oxidation reactor 5 by the road
By the road 51 and pipeline 33 enter sewage mixed and stored, in anaerobic ammonia oxidation reactor 5 enrichment anaerobism ammonia oxygen
Change under the effect of bacterium, the NH in water inlet4 +-N and NO2 ˉ-N is removed, and can produce a small amount of NO simultaneously3 ˉ-N, Anammox is anti-
The water outlet part answering device 5 is discharged through outlet pipe 55, and another part is back to denitrification dephosphorizing reactor through sewage backflow pipe 57
1, provide electron acceptor for denitrifying phosphorus removing bacteria, and remove the nitrate in phegma.
Embodiment 2: municipal sewage denitrification and dephosphorization method
Taking Guangzhou municipal wastewater treatment plant water inlet, main water quality index is as follows: COD:200～300mg/L, NH4 +-N:15～
30mg/L, TN:25～40mg/L, TP:2～4mg/L, SS:130～320mg/L, pH value 6.9～7.1.In conjunction with Fig. 1, (city is dirty
Denitrogenation of water dephosphorization process flow chart) and Fig. 2 (structural representation of municipal sewage denitrification and dephosphorization equipment) processing procedure is carried out as
Under explanation.
1) denitrification dephosphorization: municipal sewage (sewage total amount is designated as Q) is entered anti-nitre by water inlet pipe 11 after pretreatment of removing slag
Change dephosphorizing reactor 1, inoculate municipal wastewater treatment plant obtain the activated sludge with denitrogenation dephosphorizing function (SRT is that 6d, HRT are
5h), after inoculation, sludge concentration MLSS is 3000～4000mg/L, when nitrogen oxides in the phegma of anaerobic ammonia oxidation reactor 5
More, when meeting the electron acceptor needed for denitrification dephosphorization, stop the aeration facility of aerobic area, open stirring facility simultaneously, this
Time denitrification dephosphorizing reactor 1 run under anaerobic/anoxic operating mode, in denitrification dephosphorizing reactor 1 enrichment denitrification dephosphorization
Bacterium is using the nitrogen oxides in phegma as electron acceptor, it is achieved remove while nitrogen, phosphorus；When anaerobic ammonia oxidation reactor 5
In phegma, nitrogen oxides is less, when being insufficient for the electron acceptor needed for dephosphorization, stops stirring, opens aeration, now should
Unit uses aerobic/anaerobic operating mode to run, it is achieved the removal of phosphorus；
2) medium sediment pool: municipal sewage, after denitrification dephosphorizing reactor 1, eliminates most organic matter and phosphorus containg substances, portion
Nitrogen is divided also to be removed herein；Then, mixed liquor entrance medium sediment pool 2 carries out mud-water separation；The partial sludge of medium sediment pool 2 is (dirty
Mud amount is designated as r, r=20%～50%Q) it is back to the anaerobic zone of denitrification dephosphorizing reactor 1, arrange outside remaining mud；Supernatant presses one
Certainty ratio respectively enters short distance nitration reactor 4 and anaerobic ammonia oxidation reactor 5；
3) current divider: the water outlet of medium sediment pool 2 being introduced current divider 3, is classified as two parts in current divider 3, Part I goes out
(sewage quantity is designated as q to water1, q1=50%～70%Q) entering short distance nitration reactor, (sewage quantity is designated as q in Part II water outlet2, q2=
30%～50%Q) anaerobic ammonia oxidation reactor is entered, by the water quality on-line determination instrument on anaerobic ammonia oxidation reactor 5 to anaerobism
Nitrogen composition and content in ammonia oxidation reactor 5 water outlet monitor in real time, and export result to flow controller control
Sewage enters short distance nitration reactor 4 and the ratio of anaerobic ammonia oxidation reactor 5；As NH in water outlet4 +When-N content is higher, reduce
Enter the sewage quantity of anaerobic ammonia oxidation reactor 5, as NO in water outlet2 ˉWhen-N content is higher, improves and enter Anammox reaction
The sewage quantity of device 5；As NO in water outlet3 ˉWhen-N content is higher, improves anaerobic ammonia oxidation reactor 5 and be back to denitrification dephosphorization reaction
(sewage quantity is designated as R to the sewage quantity of device 11, R1=50%～100%Q)；
4) short distance nitration: short distance nitration reactor 4 uses and flows reaction unit continuously, puts into the nitrification dirt that municipal wastewater treatment plant obtains
Mud, after inoculation, sludge concentration MLSS was 3000～6000mg/L, by 10 days, the DO overexposure pretreatment consumption more than 1.5mg/L
Fall miscellaneous bacteria in mud, then control temperature be 30 DEG C, DO be 0.5mg/L, SRT be 8d, HRT be to realize short distance nitre under conditions of 4h
The Effec-tive Function changed；Short distance nitration unit is rich in NO2 ˉThe water outlet of-N enters anaerobism ammonia oxygen with another part supernatant of medium sediment pool
Change reactor 5；Short distance nitration reactor 4, in above-mentioned operation, realizes continuous aeration by aeration facility 45, by DO analyzer
42 monitor the DO change in short distance nitration reactor 4 in real time, control aeration rate, by temperature by blower fan 44 and gas flowmeter 43
Degree controller 41 monitors in real time and controls sewage temperature is 30 DEG C；Realize short distance nitration reactor 4 by mud return line 46 to sink
Shallow lake district mixes with the mud of aeration zone；Regular spoil disposal and the operation maintenance of short distance nitration reactor 4 is realized by blow-down pipe 47；
5) Anammox: anaerobic ammonia oxidation reactor 5 uses biofilm reactor, is provided with volcanic rock filtrate, and filling rate is
50%, upward flow operational mode, filtering velocity is 1.8m/h, and to control its reaction temperature be 25～35 DEG C；In this unit, enrichment detests
NH under the effect of anaerobic ammonium oxidation bacterium, in water inlet4 +-N and NO2 ˉ-N is removed, and can produce a small amount of NO simultaneously3 ˉThe part of-N
Effluent recycling, to denitrification dephosphorizing reactor, provides electron acceptor for denitrifying phosphorus removing bacteria, the most also can be to residual in water outlet
Nitrogen oxides processes further, improves the overall denitrification efficiency of system.Additionally, the water part backflow of anaerobic ammonia oxidation reactor
To short distance nitration reactor, (sewage quantity is designated as R2, R2=50%～100%Q).
According to the step of above-mentioned detailed description of the invention, after the domestications of 3 months and cultivating, the effluent quality of this covering device
As follows: COD: < 25.0mg/L, NH4 +-N: < 1.0mg/L, TN: < 7.0mg/L, TP: < 0.5mg/L, effluent quality is far superior to " dirty
Water comprehensive discharge standard (GB8978-1996) " one-level A standard-required.Analysis method employed in test is all according to " water is with useless
Water monitoring analyze method (fourth edition) " in standard method.
SRT: sludge age；HRT: hydraulic detention time；MLSS: mixed genetic-neural network.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not by above-described embodiment
Limit, the change made under other any Spirit Essence without departing from the present invention and principle, modify, substitute, combine, simplify,
All should be the substitute mode of equivalence, within being included in protection scope of the present invention.
Claims (8)
1. a municipal sewage denitrification and dephosphorization equipment, it is characterised in that: include the denitrification dephosphorization being sequentially connected with by main line
Reactor, medium sediment pool, current divider, short distance nitration reactor and anaerobic ammonia oxidation reactor；Described denitrification dephosphorizing reactor with
The mud return line that mud in medium sediment pool can be imported denitrification dephosphorizing reactor it is provided with between medium sediment pool；Described denitrification dephosphorization
It is provided with between reactor with anaerobic ammonia oxidation reactor and the water outlet importing denitrification dephosphorization of anaerobic ammonia oxidation reactor can be reacted
The sewage backflow pipe of device；It is provided with between described current divider and anaerobic ammonia oxidation reactor and the water outlet of current divider can be imported anaerobism ammonia
The pipeline of oxidation reactor；Being provided with between described short distance nitration reactor and anaerobic ammonia oxidation reactor can be anti-by Anammox
The water outlet answering device imports the sewage backflow pipe of short distance nitration reactor；Described anaerobic ammonia oxidation reactor is provided with water quality and surveys online
Determine instrument and flow controller, and described flow controller is connected with current divider.
A kind of municipal sewage denitrification and dephosphorization equipment the most according to claim 1, it is characterised in that: described denitrification dephosphorization is anti-
Device is answered to be provided with water inlet pipe, mud return line, sewage backflow pipe, outlet pipe, blow-down pipe, aeration facility and stirring facility.
A kind of municipal sewage denitrification and dephosphorization equipment the most according to claim 2, it is characterised in that: described denitrification dephosphorization is anti-
Answering device to be made up of anaerobic zone and aerobic area, water inlet pipe and mud return line are arranged on anaerobic zone, sewage backflow pipe, outlet pipe, put
Blank pipe, aeration facility and stirring facility are arranged on aerobic area.
A kind of municipal sewage denitrification and dephosphorization equipment the most according to claim 1, it is characterised in that: described medium sediment pool is provided with
Water inlet pipe, outlet pipe and mud return line.
A kind of municipal sewage denitrification and dephosphorization equipment the most according to claim 1, it is characterised in that: described short distance nitration reacts
Device is provided with water inlet pipe, outlet pipe, mud return line, sewage backflow pipe, blow-down pipe, temperature controller, DO analyzer and aeration
Facility.
A kind of municipal sewage denitrification and dephosphorization equipment the most according to claim 1, it is characterised in that: described Anammox is anti-
Device is answered to be provided with water inlet pipe, outlet pipe, blow-down pipe, backwash tube, temperature controller.
7. a municipal sewage denitrification and dephosphorization method, it is characterised in that: comprise the following steps:
1) denitrification dephosphorizing reactor: municipal sewage initially enters denitrification dephosphorizing reactor, is wherein enriched with substantial amounts of anti-nitre
Change dephosphorization bacterial；The anaerobic zone of denitrification dephosphorizing reactor receives the returned sludge of medium sediment pool simultaneously, denitrification dephosphorizing reactor
Aerobic area receives the phegma of Anammox unit, when in the phegma of anaerobic ammonia oxidation reactor, nitrogen oxides is more, full
Foot denitrification dephosphorization needed for electron acceptor time, stop aerobic area aeration facility, simultaneously open stirring facility, now denitrification
Dephosphorizing reactor runs under anaerobic/anoxic operating mode, and denitrifying phosphorus removing bacteria is with the nitrogen oxides in phegma as electron acceptor, real
Remove while existing nitrogen, phosphorus；When in the phegma of anaerobic ammonia oxidation reactor, nitrogen oxides is less, needed for being insufficient for dephosphorization
Electron acceptor time, stop stirring, open aeration, now this unit use aerobic/anaerobic operating mode run, it is achieved the removal of phosphorus；
2) medium sediment pool: the water outlet of denitrification dephosphorizing reactor is introduced medium sediment pool and carries out mud-water separation, the partial sludge of medium sediment pool
It is back to the anaerobic zone of denitrification dephosphorizing reactor, arranges outside remaining mud；
3) current divider: the water outlet of medium sediment pool being introduced current divider, is classified as two parts in current divider, Part I water outlet is entered
Entering short distance nitration reactor, Part II water outlet enters anaerobic ammonia oxidation reactor, by the water on anaerobic ammonia oxidation reactor
Matter on-line determination instrument forms the nitrogen in anaerobic ammonia oxidation reactor water outlet and content monitors in real time, and result is exported
To flow controller, regulation enters short distance nitration reactor and the sewage ratio of anaerobic ammonia oxidation reactor；As NH in water outlet4 +-N
When content is higher, it is lowered into the sewage quantity of anaerobic ammonia oxidation reactor；As NO in water outlet2 -When-N content is higher, improves and enter
The sewage quantity of anaerobic ammonia oxidation reactor；As NO in water outlet3 -When-N content is higher, improves anaerobic ammonia oxidation reactor and be back to instead
The sewage quantity of nitrification and phosphorus removal reactor；
4) short distance nitration reactor: be enriched with substantial amounts of ammonia oxidizing bacteria in short distance nitration reactor, through entering that current divider introduces
Water carries out high-efficiency short-range nitration at this, then will be enriched in NO2 -The water outlet of-N imports anaerobic ammonia oxidation reactor；
5) anaerobic ammonia oxidation reactor: this reactor uses carrier organism membrane reactor, and carrier is enriched with substantial amounts of anaerobism ammonia
Oxidizing bacteria；It will receive part water outlet and the water outlet of short distance nitration reactor of current divider, at anaerobic ammonia oxidizing bacteria simultaneously
Carry out autotrophy under effect to denitrogenate；A water outlet part for anaerobic ammonia oxidation reactor is back to denitrification dephosphorizing reactor, a part
It is back to short distance nitration reactor, arranges outside remainder.
Municipal sewage denitrification and dephosphorization method the most according to claim 7, it is characterised in that: enter denitrification dephosphorizing reactor
Municipal sewage total amount be designated as Q, be back to sludge quantity r=20%～50%Q of denitrification dephosphorizing reactor through medium sediment pool；Through shunting
Device distributes into the sewage quantity q of short distance nitration reactor1=50%～70%Q；Anaerobic ammonia oxidation reactor is distributed into through current divider
Sewage quantity q2=30%～50%Q；Anaerobic ammonia oxidation reactor effluent recycling is to the sewage quantity R of denitrification dephosphorizing reactor1=50%
～100%Q；Anaerobic ammonia oxidation reactor effluent recycling is to the sewage quantity R of short distance nitration reactor2=50%～100%Q.
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| CN106219749A (en) * | 2016-09-23 | 2016-12-14 | 北京林业大学 | A kind of process in the HABR technical method of the nitrogenous organic wastewater of low concentration and equipment |
| CN108585189A (en) * | 2018-03-26 | 2018-09-28 | 北京工业大学 | The apparatus and method of segmentation water outlet denitrification dephosphorization-short distance nitration biological film coupling Anammox processing city domestic sewage |
| CN109592785A (en) * | 2018-12-28 | 2019-04-09 | 中国科学院生态环境研究中心 | Anaerobism membrane reactor-partial nitrification-Anammox combination unit and method |
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| CN108585189A (en) * | 2018-03-26 | 2018-09-28 | 北京工业大学 | The apparatus and method of segmentation water outlet denitrification dephosphorization-short distance nitration biological film coupling Anammox processing city domestic sewage |
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| CN110104903A (en) * | 2019-06-10 | 2019-08-09 | 南方创业（天津）科技发展有限公司 | A kind of integration short distance nitration Anammox equipment and its treatment process |
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| CN110436627A (en) * | 2019-08-12 | 2019-11-12 | 欧基（上海）环保科技有限公司 | A kind of Anammox denitrification dephosphorization system and method |
| CN110436627B (en) * | 2019-08-12 | 2022-06-24 | 欧基（上海）环保科技有限公司 | Anaerobic ammonia oxidation nitrogen and phosphorus removal system and method |
| CN110436620B (en) * | 2019-08-30 | 2024-06-11 | 杭州沁霖生态科技有限公司 | Synchronous denitrification wetland and treatment process thereof |
| CN110436620A (en) * | 2019-08-30 | 2019-11-12 | 杭州沁霖生态科技有限公司 | A kind of wetland and its treatment process of simultaneous denitrification |
| CN110950429A (en) * | 2019-11-07 | 2020-04-03 | 广州市华绿环保科技有限公司 | Anaerobic ammonia oxidation method and system for treating domestic sewage |
| CN112979099A (en) * | 2021-04-09 | 2021-06-18 | 山东大学 | Process and device for synchronously recovering carbon and phosphorus in sewage by coupling autotrophic nitrogen removal |
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