CN109354175A - For handling the efficient autotrophic denitrification system and operation method of high ammonia-nitrogen wastewater - Google Patents

For handling the efficient autotrophic denitrification system and operation method of high ammonia-nitrogen wastewater Download PDF

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CN109354175A
CN109354175A CN201811477781.8A CN201811477781A CN109354175A CN 109354175 A CN109354175 A CN 109354175A CN 201811477781 A CN201811477781 A CN 201811477781A CN 109354175 A CN109354175 A CN 109354175A
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reaction tank
pond
denitrification
sedimentation basin
outlet
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CN109354175B (en
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韩文杰
吴迪
周家中
管勇杰
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Qingdao Si Purun Water Treatment Limited-Liability Co
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Qingdao Si Purun Water Treatment Limited-Liability Co
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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
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1268—Membrane bioreactor systems
    • 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
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1205—Particular type of activated sludge processes
    • C02F3/121—Multistep 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
    • C02F3/302—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
    • C02F3/302—Nitrification and denitrification treatment
    • C02F3/307—Nitrification and denitrification treatment characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process
    • 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
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/22—O2
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Abstract

The invention discloses a kind of for handling the efficient autotrophic denitrification system and operation method of high ammonia-nitrogen wastewater, belongs to wastewater biological denitrificaion technical field.The problems such as big, inoculum concentration which solve land occupations needed for related system in the prior art is excessively, the starting time is long, denitrifying load is low, impact resistance is poor, system is influenced vulnerable to entering organic matter of water.The present invention combines pure film denitrification with mud film one-part form autotrophic denitrification, and denitrification pond is preposition, autotrophic denitrification postposition and effluent recycling；Three kinds of operational modes, respectively parallel running, bi serie A operation and bi serie B operational mode can be achieved in the present invention, control four reaction tank water discharging directions by communicating valve and realize reaction tank series and parallel or isolated operation；By be inoculated with, flow plus etc. means realize technique quick start；According to processing requirement, different process arrangement form is realized.The present invention have many advantages, such as land occupation less, inoculative proportion is small, starting is fast, denitrifying load is high, impact resistance is strong, good to entering organic matter of water tolerance.

Description

For handling the efficient autotrophic denitrification system and operation method of high ammonia-nitrogen wastewater
Technical field
The invention belongs to wastewater biological denitrificaion technical fields, and in particular to it is a kind of for handle high ammonia-nitrogen wastewater efficiently from Support denitrification system and operation method.
Background technique
Autotrophic denitrification technology is led as the novel denitrification process quickly grown in recent years by whole world wastewater biological denitrificaion The concern of domain researcher, the technique consume energy organic with 100% compared to the oxygen supply that traditional nitration denitrification can save 62.5% Carbon source adds, thus is considered as most economical effective wastewater biological denitrificaion mode.In one-part form autotrophic denitrification technique, pass through Limit oxygen makes nitrite oxidizing bacteria (AOB) and anaerobic ammonia oxidizing bacteria (AnAOB) be enriched in same reactor, micro- by two kinds of functions The synergistic effect of biology reaches efficient denitrification.However, AOB and AnAOB are autotrophic microbe, the generation cycle is longer, and growth is slow Slowly, cause actually to start overlong time in engineer application, in addition, the nitrogen removal rate on autotrophic denitrification technology theory is 89%, The project more demanding for water outlet total nitrogen is likely difficult to guarantee standard water discharge.
In order to further enhance nitrogen removal rate, denitrification coupling autotrophic denitrification technology gets more and more people's extensive concerning, main It wants process form to be divided into Prepositive denitrification and rear-mounted denitrification, for most of waste water, one can be more or less contained in water inlet Divide organic carbon source, when using postposition cooperative programs, organic matter initially enters the autotrophic denitrification stage, may cause shadow to it It rings, therefore has that researcher is preposition by the denitrification stage, effluent recycling is set, realize going for nitrate and organic matter in the first stage It removes, compared with rear-mounted denitrification, this associated form outlet water organic substance is easier to control, and can pass through autotrophic denitrification area aeration quantity Or the regulation of dissolved oxygen, most of organic matter is removed, while improving nitrogen removal rate, still, current most preposition anti-nitre Chemical industry skill need to carry out mud-water separation using granule sludge or anoxic sludge, water outlet, and longtime running easily leads to sludge yield mistake Greatly, frequent spoil disposal is needed, subsequent technique is had an impact in addition, sludge easily enters aftertreatment systems with water outlet, and is easy to happen Sludge bulking phenomenon, therefore, it is difficult to run steadily in the long term.And the front establishment method of biofilm compares activated sludge process work Skill microbiologic population is more abundant, and species diversity is more stable；It is larger and have good that particle is easily formed after biofilm detachment The wadding body of settling property, and there is preferable settling property, easily it is separated by solid-liquid separation；It is returned in addition, biofilm does not need sludge generally Stream, energy consumption is lower, it is easy to maintain and management and be not present sludge bulking problem.It is limited to pure embrane method denitrification process starting and steady Fixed to run required technical bottleneck, pure film denitrification still lacks large-scale engineering application so far.
Since two kinds of functional microorganisms AOB and AnAOB growth of autotrophic denitrification are very slow, the doubling time is longer, it is difficult to Higher biological concentration is maintained, and AnAOB is highly prone to the influence into restraining factors such as Organic substance in water and reduces activity, therefore works as The preceding research about one-part form autotrophic denitrification related process rests on laboratory level more；AOB is aerobic bacteria, and AnAOB is anaerobism Bacterium, excessively high dissolved oxygen can inhibit AnAOB, and too low dissolved oxygen not can guarantee ammonia nitrogen to Nitrite transformation, nitrite mistake The low AnAOB matrix that will lead to is insufficient, and growth is suppressed.In addition, current one-part form autotrophic denitrification process system mostly use it is outstanding The biological form membrane of floading condition granule sludge form or attached state, autotrophic nitrogen removal granule sludge are lower to the tolerance of dissolved oxygen (mostly 1mg/L or less), slightly higher dissolved oxygen is easy to generate inhibition to AnAOB, or even makes system crash.In addition, granule sludge Technique is difficult to realize the collaboration between the Nitrification of floc sludge and Anaerobic Ammonium Oxidation of Granular Sludge bacterium activity, while on sludge The floating anaerobic ammonia oxidizing bacteria that will cause falls off and system performance degradation.And biofilm system due in film matrix efficiency of transmission it is poor, Generally be difficult to reach very high denitrifying load, furthermore, due to AOB for adhere to carrier ecological niche occupy power and adhesive force compared with Difference, slightly higher hydraulic shear can peel off it from biomembrane, this is also that the autotrophic denitrification technique of biofilm is mostly used to exist greatly A reason for causing total nitrogen elimination capacity that can not stablize rising finally can be all limited by nitrosation effect after long-play, In view of both technique drawbacks, suitable autotrophic denitrification process form can be found and quick start and high load capacity stable operation are The technique becomes the key of engineer application.AOB and AnAOB are placed in by the autotrophic denitrification process system of MBBR combination activated sludge On activated sludge and MBBR filler, higher total nitrogen elimination capacity not only can achieve, but also there is certain impact resistance.
The research report of prior art related fields mainly has:
(Liu Yang, Chen Xiaohua, R.Lemaire. autotrophic denitrification ANITA Mox MBBR and IFAS run starting experience to Liu Yang etc. [J] China water supply and drainage, 2017 (22): 38-42.) develop the IFAS combined by suspended active sludge and fixed biofilm Technique, when IFAS process operation, required dissolved oxygen concentration was 0.2-0.5mg/L.Actual operating data shows that TN removes table Face load reaches as high as 2.2kgN/m3/d.But the technique intake C/N be only 0.17, for high C/N than water quality denitrification effect simultaneously No data is supported, in addition, the technique removes facility without nitrate nitrogen, the direct outlet of nitrate nitrogen is discharged, for being discharged more demanding engineering Project exploitativeness is poor.
(the high ammonia nitrogen sludge-digestion liquid of Yang Yandong, Huang Jing, Han Xiao space integral anaerobic ammonia oxidation process processing such as Yang Yandong Starting [J] China Environmental Science, 2015,35 (4): 1082-1087.) use novel fixed biofilm-activated sludge reaction The practical sludge-digestion liquid of device processing is gradually increased by inoculation short distance nitration sludge and Anammox biofilm packing into water Ammonia nitrogen concentration simultaneously controls dissolved oxygen concentration in 0.11~0.42mg/L, and system realizes short distance nitration-anaerobic ammoxidation in 65d The starting of reaction.Influent COD and ammonia nitrogen concentration are 921 and 1120.8mg/L, and COD, ammonia nitrogen and nitrogen removal rate are respectively 66.8%, 99.0% and 94.4%.This method only starts reactor using being discharged ammonia nitrogen concentration as standard, reactor HRT longer does not carry out reactor control for TN elimination capacity, its total nitrogen elimination capacity is only 0.27kgN/ after stable operation m3/ d, and digestive juice is gradually diluted as reactor using water distribution in its start-up course and is intake, process is relatively complicated, for reality Engineering project exploitativeness is poor.
(sludge-digestion liquid that Wang Gang is based on nitrosation/anaerobic ammonia oxidation/denitrification (SNAD) technology simultaneously is de- by Wang Gang etc. Nitrogen technical study [D] Dalian University of Technology, 2017.) using restarting SNAD after first starting series connection nitrosation-anaerobic ammoxidation Mode handle Practical Project sludge-digestion liquid, start-up course first debugs starting nitrosation process, obtains stable suitable anaerobism Other two pilot reactor that is inoculated with into anaerobic ammonium oxidation tank after the water outlet of ammoxidation process, then in batches (provides respectively Provenance sludge and biofilm filler) anaerobic ammonium oxidation sludge cultivated in advance and biofilm MBBR filler, to anaerobic ammonium oxidation tank culture After obtaining more anaerobic ammonium oxidation sludge, the sludge and filler of nitrosation pond sludge and anaerobic ammonium oxidation tank are mixed, two ponds are opened Dynamic SNAD integral type technique.The pond project SNAD media-filling rate 35%, entire start-up course are inoculated with to anaerobic ammonium oxidation tank altogether Anaerobic ammonium oxidation sludge (dry weight) 20kg calculates sludge concentration 200mg/L, biofilm filler 25m3, calculate filler rate of vaccination about 9%, self-starting is more than 340d to stable series connection nitrosation-anaerobic ammoxidation, that is, used time is obtained, when spending two months later again Between complete integral type SNAD starting, amount to starting time about 400d, nitrogen removal rate about 70%, the pond SNAD after starting successfully DO0.3-0.8mg/L.The starting method process is cumbersome, need two pilot reactors be constantly engineering project inoculation provenance sludge and Biofilm filler, with duration and nitrogen removal rate it is low, it is big for provenance biomass demand, it is difficult to realize long-term multiple big scale of constructions of project Amplification.
(Li Huibo, Wang Yinshuan, the starting and operation of the .ANITA Mox autotrophic denitrification MBBR reactor such as fourth Juan such as Li Huibo [J] China water supply and drainage, 2014,30 (5): 1-5.) using inocalation method starting CANON process anaerobic sludge digestive juice.It connects The gross area of kind filler is than 3% starting 50m3Reactor, by 120d operation (without short distance nitration start), stationary phase It is 0.7~1.1kgN/m that total nitrogen, which removes volumetric loading,3/ d, through calculating, TN removes surface loading in 1.29~2.05gN/m2/d。 Though the technology rate of vaccination is lower, the starting time is very fast, the NH of stationary phase system removal4 +The NO of-N and generation3 -The ratio between-N is 8%-15%, and chemistry determine have certain gap than (11%), and in general, system water inlet contains certain BOD5It will lead to denitrification The generation of phenomenon causes the ratio less than normal, and there are certain nitrite oxidizing bacteria (NOB) in system, then the ratio can be made inclined Greatly, it is notable that the presence of NOB will fight for nitrite matrix with AnAOB to be made AnAOB lack suitable matrix ratio and cause System crash；In addition, influent ammonium concentration used in the technology is higher and water is larger causes total nitrogen elimination capacity not low, but go out Water ammonia nitrogen concentration still reaches 150mg/L or so, can not manage and require close to higher height, in addition, the technique is without nitrate nitrogen processing step, Water outlet total nitrogen can not be solved, the project more demanding for water outlet total nitrogen needs other techniques to continue with.
CN108083581A discloses a kind of low energy consumption autotrophic denitrification municipal sewage system and method, uses series connection Anaerobism decarburization-autotrophic denitrification form is first inoculated with sewage treatment plant excess sludge starting anaerobism except carbon reactor, and the anaerobism being related to is de- Carbon reactor start-up course needs 60-90d, and the starting self-supported denitrification reactor process being related to later needs first whole pond inoculation 3000mg/L Anaerobic ammonium oxidation sludge carry out the starting of anaerobism early period, and artificial distribution meets anaerobic ammonia oxidizing bacteria matrix demand, the reactor Start-up course needs 90-120d, and entire technique starting needs 150-210d, and this method preposition anaerobism decarburization pond uses sludge system, long Easily there is sludge and enters back segment processing system in phase operation, impacts to entire technique, and be easy to happen sludge bulking, in addition, This method is excessive to anaerobic ammonia oxidizing bacteria strain demand, and inoculation difficulty is high and is difficult to realize the big scale of construction expansion of long-term multiple projects Increase, can artificial distribution's early period starts successful Anammox strain adapt to actual waste water that there are certain risks.
CN108585202A disclose in sequencing batch reactor realize part short distance nitration, sludge fermentation coupling denitrification with Anammox handles the technique of sanitary sewage, and the starting for the autotrophic denitrification that this method is related to: inoculation experiments room short distance nitration is detested The sponge filler of film is hung up properly in anaerobic ammonium oxidation integrated reactor, sludge concentration 2500mg/L is converted into, after mixing with blank filler Fixed that reactor is added, packing ratio 40% is intake as water distribution.This method is excessive similarly for provenance microbial biomass demand, it is difficult to Meet the starting of big scale of construction engineering project, and start-up course is that can not expect the micro- life of autotrophic denitrification function of culture with water running Can object use Practical Project water quality, and sponge filler is easy to wear in actual moving process, centainly thick to its biofilm formation Blocking influence mass transfer occurs for Du Shiyi or filler becomes heavy and hinders fluidisation.
CN106630143 discloses the integrated reactor and denitrogenation method of a kind of complete autotrophic denitrification of Prepositive denitrification, Nitrococcus, short-cut denitrification bacterium, anaerobism ammonia oxygen are cultivated in its reactor used setting aerobic zone, anoxic zone, anaerobic zone respectively To change bacterium, is flowed back by gas lift unit Assay mixture, the short-cut denitrification control reflux nitrate nitrogen used is changed into sub- nitrogen step, Higher for water quality requirement, influent COD is excessive or hydraulic detention time is too long can lead to whole denitrification to destroy reactor flat Weighing apparatus, although aerobic, anoxic, anaerobic zone is arranged in the device in same reactor, practical manipulation is complex, it is difficult to ensure that respectively The suitable condition of reaction zone, in addition, reflux ratio can not arbitrarily be controlled according to water quality by carrying out reflux using gas lift unit, practicability compared with Difference.
Summary of the invention
In order to solve above-mentioned technological deficiency existing in the prior art, it is useless for handling high ammonia nitrogen that the invention proposes one kind The efficient autotrophic denitrification system and operation method of water control four reaction tank water discharging directions by communicating valve to realize reaction Pond series, parallel or isolated operation, by be inoculated with, flow plus etc. means realize autotrophic denitrification technique quick start, pass through sludge Reflux extends autotrophic microbe sludge age, maintains efficient bacterium biomass more in reactor, can according to processing standard requirements Realize different technology arrangement forms, the present invention have required land occupation less, inoculative proportion is small, starting is fast, total nitrogen elimination capacity height, The advantages that impact resistance is strong, small by organic substance influence.
To achieve the goals above, the required technical problem overcome is:
Quick spoil disposal method how is utilized within the time limit of the used time is shorter while starting nitrosation and denitrification mud membrane process, and And in limited provenance, reduce inoculative proportion, by stream plus means, it is control stirring, dissolved oxygen, aeration, different Technology arrangement form etc. realizes autotrophic denitrification system quick start, and reaches higher TN elimination capacity, reduces reaction unit Occupied area；The unlatching such as communicating valve, inlet valve how is controlled, different technology arrangement forms is realized, to reach different places Reason standard, realization system are run steadily in the long term.
One of task of the invention is to provide a kind of for handling the efficient autotrophic denitrification system of high ammonia-nitrogen wastewater.
In order to solve the above technical problems, the invention adopts the following technical scheme:
It is a kind of for handling the efficient autotrophic denitrification system of high ammonia-nitrogen wastewater comprising centerwell, reaction tank main body, sludge Reflux unit, mixed liquor reflux unit, communication apparatus and aerator, the reaction tank main body are four reactions of two rows of two column Pond, respectively the first reaction tank, the second reaction tank, third reaction tank and the 4th reaction tank, wherein the first reaction tank and the 4th is instead Mono- row of Ying Chiwei and it is located at bottom, the first reaction tank and the second reaction tank are a column；
The centerwell is located at the center of four diagonal lines of reaction tank comprising denitrification pond, water distribution Well, wet well and sedimentation basin, four be concentric circles pond body, and is followed successively by denitrification pond from inside to outside, distribution well, wet well, sinks Shallow lake pond；
The water inlet in the denitrification pond is connected with water inlet manifold road, treatment sewage through the water inlet manifold road into Enter the bottom in the denitrification pond, the pond body top in the denitrification pond is provided with interception sieve；Described in treatment sewage warp The interception sieve on denitrification pond pond body top enters the distribution well, is connected between the distribution well and each reaction tank, and For intaking into each reaction tank, the water distribution bottom is provided with the first mud discharging mouth；The sedimentation basin is for collecting four The water outlet of a reaction tank, and it is discharged into wet well through the sedimentation basin top, the precipitating bottom of pond portion is provided with the second mud discharging mouth； The water outlet on the wet well top is connected with total outlet pipe road, and water outlet is discharged through the total outlet pipe road；Each anti- The water outlet of Ying Chi is provided with interception sieve；
First reaction tank and the second reaction tank, the second reaction tank and third reaction tank, third reaction tank and the 4th Pass through the first connecting line, the second connecting line, third connecting tube between reaction tank, the 4th reaction tank and the first reaction tank respectively Road and the connection of the 4th connecting line；
The communication apparatus includes communicating valve, and the communicating valve includes the first connection on the first connecting line Valve, the second communicating valve on the second connecting line, the third connecting valve on third connecting line and be located at the 4th connect Take over the 4th communicating valve of road；It is respectively arranged with close to first reaction tank of centerwell and the upper side of the 4th reaction tank First water inlet and the 4th water inlet are respectively set close to second reaction tank of centerwell and the side-lower of third reaction tank There are the second water inlet and third water inlet, passes through first water inlet, the second water inlet, third water inlet and the 4th water inlet It intakes respectively into the first reaction tank, the second reaction tank, third reaction tank and the 4th reaction tank；
Agitating device is provided with inside the denitrification pond and inside each reaction tank；
The precipitating bottom of pond portion is provided with the first mud return line, the second mud return line, third mud return line, Four mud return lines, first mud return line, the second mud return line, third mud return line, the 4th sludge reflux The other end of pipe each leads into first reaction tank, the second reaction tank, third reaction tank, the 4th reaction bottom of pond portion；It is described Sludge refluxing apparatus, including the first sludge reflux pump, the second sludge reflux pump, third sludge reflux pump, the 4th sludge reflux Pump, distribution well reflux pump, first sludge reflux pump, the second sludge reflux pump, third sludge reflux pump, the 4th sludge return Stream pump be located at precipitating bottom of pond portion and respectively with first mud return line, the second mud return line, third mud return line, The connection of 4th mud return line, the distribution well reflux pump is arranged on the mud return line of distribution well lower part connection, described The other end of mud return line be passed through the denitrification pond；
The sedimentation basin top connection is arranged in the mixed liquor reflux unit, including mixed liquor reflux pump On return pipe, the other end of the return pipe is passed through the denitrification pond；
The aerator is distributed in each reaction tank, and has been added in denitrification pond and each reaction tank outstanding Float carrier.
Advantageous effects brought by above-mentioned technical proposal are to be realized by above-mentioned communication apparatus to each reaction tank The control of water discharging direction.Three kinds of different control modes unlike the prior art can be achieved, it may be assumed that extremely by the first reaction tank of control The water discharging direction of 4th reaction tank realizes reaction tank series connection, side by side or isolated operation, and by using these three control modes, Land occupation needed for it is less, inoculative proportion is small and starting is fast, nitric efficiency is high, impact resistance good to entering organic matter of water tolerance By force.Specific advantageous effects are shown in specification specific embodiment.
As a preferred solution of the present invention, first water inlet, the second water inlet, third water inlet and the 4th Water inlet passes through the first inlet pipeline, the second inlet pipeline, third inlet pipeline and the 4th inlet pipeline respectively and matches with described Well connection, and it is provided with the first inlet valve on first inlet pipeline, the second inlet valve is set on the second inlet pipeline, Third inlet valve is set on third inlet pipeline, the 4th inlet valve is set on the 4th inlet pipeline；The interception sieve includes First, which intercepts sieve, the second interception sieve, third, intercepts sieve and the 4th interception sieve, and described first intercepts sieve, second Intercept sieve, third intercept sieve, the 4th interception sieve be located at the first reaction tank, the second reaction tank, third reaction tank and In 4th reaction tank.
As another preferred embodiment of the invention, the aerator in each reaction tank is by multiple groups boring aeration pipe It is formed with micropore aeration pipe.
Further, the first reaction tank, the second reaction tank, third reaction tank, the 4th reaction tank water outlet pass through respectively First outlet pipeline, the second outlet pipeline, third outlet pipeline and the 4th outlet pipeline are connect with the sedimentation basin, and One outlet pipeline, the second outlet pipeline, third outlet pipeline and the 4th outlet pipeline are correspondingly arranged on the first outlet valve, second go out Water valve, third outlet valve and the 4th outlet valve.
Further, the first outlet pipeline, the second outlet pipeline, third outlet pipeline, the 4th outlet pipeline pass through respectively First sludge buffer board, the second sludge buffer board, third sludge buffer board, the 4th sludge buffer board are connect with sedimentation basin, and the One sludge buffer board, the second sludge buffer board, third sludge buffer board, the 4th sludge buffer board are respectively positioned on sedimentation basin lower part.
Another task of the invention is to provide above-mentioned for handling the fortune of the efficient autotrophic denitrification system of high ammonia-nitrogen wastewater Row method comprising following three kinds of control models:
The first, parallel running mode:
First reaction tank, the second reaction tank, third reaction tank and the 4th reaction tank is coordination, each reaction Pond independently intakes, is independently discharged, and makes water outlet be pooled to sedimentation basin, sedimentation basin part effluent recycling by controlling related valve To denitrification pond, remaining water outlet is discharged through wet well by total outlet pipe road, opens first to fourth sludge time for being located at sedimentation basin Stream is pumped sludge reflux to each reaction tank；
The second, bi serie A operational mode:
First reaction tank, the second reaction tank are one group, and the third reaction tank and the 4th reaction tank are one group, Treatment sewage enters denitrification pond by the water inlet in denitrification pond, and the interception sieve through denitrification pond pond body top enters and matches Well continuously enters the first reaction tank, the 4th reaction tank by the first water inlet, the 4th water inlet respectively, related by control Valve makes the water in the first reaction tank enter the second reaction tank, so that the water in the 4th reaction tank enters third reaction tank, the Two reaction tanks and the water outlet of the 4th reaction tank are finally pooled to sedimentation basin, and sedimentation basin part effluent recycling to denitrification pond, remaining goes out Water is discharged through wet well by total outlet pipe road, opens first to fourth sludge reflux pump for being located at sedimentation basin for sludge reflux to each Reaction tank；
Third, bi serie B operational mode:
First reaction tank, the second reaction tank, third reaction tank are one group, first reaction tank, the 4th anti- Mono- group of Ying Chiwei, treatment sewage enters denitrification pond by the water inlet in denitrification pond, through blocking for denitrification pond pond body top It cuts sieve and enters distribution well, continuously enter the first reaction tank by the first water inlet, and make first by controlling related valve Water in reaction tank respectively enters the second reaction tank, the 4th reaction tank, and the water in the second reaction tank enters third reaction tank, third Reaction tank, the water outlet of the 4th reaction tank are pooled to sedimentation basin, and sedimentation basin part effluent recycling to denitrification pond, remaining water outlet is through being discharged Well is discharged by total outlet pipe road, opens first to fourth sludge reflux pump for being located at sedimentation basin for sludge reflux to each reaction tank.
Preferably, the parallel running mode specific steps are as follows: treatment sewage by denitrification pond water inlet into Enter denitrification pond, after the interception sieve on denitrification pond pond body top enters distribution well respectively by the first inlet valve, second into Water valve, third inlet valve, the 4th inlet valve and the first water inlet, the second water inlet, third water inlet and the 4th water inlet are continuous Into each reaction tank, water outlet intercepts sieve, the second interception sieve, third by first respectively and intercepts sieve and the 4th and intercept sieve Then net is pooled to sedimentation basin by respective outlet valve, sedimentation basin part effluent recycling to denitrification pond, remaining water outlet is through going out Well is discharged by total outlet pipe road, opens first to fourth sludge reflux pump for being located at sedimentation basin for sludge reflux to each reaction Pond maintains the suitable sludge concentration of each reaction tank.
Preferably, the bi serie A operational mode specific steps are as follows: treatment sewage passes through the water inlet in denitrification pond Into denitrification pond, through denitrification pond pond body top intercept after sieve enters distribution well respectively by the first inlet valve, the 4th into Water valve and the first water inlet, the 4th water inlet continuously enter the first reaction tank, the 4th reaction tank, and the water outlet of the first reaction tank passes through the One, which intercepts sieve, the first communicating valve, the second interception sieve, enters the second reaction tank, intercepts sieve through second, the second outlet valve converges Collect sedimentation basin, sedimentation basin part effluent recycling to denitrification pond, remaining water outlet is discharged through wet well by outlet pipeline；4th is anti- It answers pond water outlet to intercept sieve by the 4th interception sieve, third connecting valve, third and enters third reaction tank, the water outlet of third reaction tank It is pooled to sedimentation basin after intercepting sieve, third outlet valve by third, sedimentation basin part effluent recycling to denitrification pond, remaining goes out Water is discharged through wet well by total outlet pipe road, opens first to fourth sludge reflux pump for being located at sedimentation basin for sludge reflux to each Reaction tank；
Preferably, above-mentioned bi serie B operational mode specific steps are as follows: treatment sewage passes through the water inlet in denitrification pond Into denitrification pond, intercept after sieve enters distribution well through denitrification pond pond body top by the first inlet valve, the first water inlet The first reaction tank is continuously entered, the water outlet of the first reaction tank intercepts sieve, the first communicating valve, the second interception sieve by first and enters Second reaction tank, while the water outlet of the first reaction tank intercepts sieve, the 4th communicating valve, the 4th interception sieve by first and enters the 4th Reaction tank, the water outlet of the second reaction tank intercept sieve and enter third reaction tank by the second interception sieve, the second communicating valve, third, The water outlet of third reaction tank is pooled to sedimentation basin by third interception sieve, third outlet valve, and sedimentation basin part effluent recycling is to anti- Nitrification tank, remaining water outlet are discharged through wet well by total outlet pipe road, and the water outlet of the 4th reaction tank is gone out by the 4th interception sieve, the 4th Water valve is pooled to sedimentation basin, sedimentation basin part effluent recycling to denitrification pond, remaining water outlet is arranged through wet well by total outlet pipe road Out, first to fourth sludge reflux pump for being located at sedimentation basin is opened by sludge reflux to each reaction tank.
Compared with prior art, present invention offers following advantageous effects:
1) the starting time is short, most only needs can start success within 100 days fastly；
2) autotrophic denitrification inoculative proportion is small, and inoculative proportion is no more than 5%；
3) starting scale is big, is suitable for big scale of construction project scale and starts；
4) stable, meet engineering and requires；
5) operational mode is flexible, controls four reaction tank water discharging directions by communicating valve according to Effluent criteria and realizes reaction tank Between series connection, side by side or isolated operation realize stable operation；
6) load is high, and land occupation saves, and about 40% or more pool capacity, TN can be saved by reaching identical TN removal volumetric loading compared to pure embrane method Removal volumetric loading can reach 2.5kgN/m3/d；
7) denitrification pond uses pure form membrane, by regular water distribution bottom spoil disposal, the denitrification to fall off can be prevented biological Film enters autotrophic denitrification reaction tank, brings adverse effect to autotrophic denitrification functional microorganism.
8) operation control is simple, and autotrophic denitrification reaction tank combines MBBR technique and activated sludge process, is returned by sludge Stream maintain reaction tank in suitable sludge concentration, by two kinds of functional microorganisms AOB and AnAOB of autotrophic denitrification be placed in MBBR carry On body and sludge, efficient bacterium biomass is big, and processing load is high, and impact resistance is strong.
9) Prepositive denitrification, which is added, can reduce influent COD to the adverse effect of autotrophic denitrification functional microorganism, take off for autotrophy Nitrogen reaction tank is created a favorable environment, and can promote nitrogen removal rate to a certain extent, and denitrification pond can be reacted with autotrophic denitrification Pond supplements certain basicity, strengthens nitrification effect.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawing:
Fig. 1 is the plan view of efficient autotrophic denitrification system of the present invention for handling high ammonia-nitrogen wastewater；
Fig. 2 is the left view of efficient autotrophic denitrification system of the present invention for handling high ammonia-nitrogen wastewater；
In figure, 1, water inlet manifold road；2, denitrification pond；3, distribution well；4, wet well；5, sedimentation basin；6, total outlet pipe road； 7, reaction tank agitating device；8, denitrification pond agitating device；9, pond body top in denitrification pond intercepts sieve；10, muddy water buffer board； C1-C4, reaction tank (first the-the four reaction tank of reaction tank)；S1-S4, reaction tank intercept sieve, and (the first interception sieve-the four blocks Cut sieve)；I1-I4, inlet valve (first the-the four inlet valve of inlet valve)；E1-E4, outlet valve (the first outlet valve-the four water outlet Valve)；H1, distribution well reflux pump；H2, sedimentation basin mixed liquor reflux pump；M1-M4, communicating valve (the first communicating valve-the four connection Valve)；B1-B4, reaction tank sludge reflux pump (first the-the four sludge reflux pump of sludge reflux pump).
Specific embodiment
The invention proposes a kind of for handling the efficient autotrophic denitrification system and operation method of high ammonia-nitrogen wastewater, in order to make Advantages of the present invention, technical solution are clearer, clear, elaborate combined with specific embodiments below to the present invention.
Firstly, being explained as follows to relevant technical terms involved in the present invention:
1) suspending carrier, specific gravity are filled out in 0.93-0.97, voidage > 90%, also referred to as floating stuffing, abbreviation carrier Material；
2) effective ratio area: since carrier outer surface phase mutual friction microorganism is difficult to adhere to, effective ratio area It is often referred to internal surface area, i.e. effective surface area possessed by the carrier of unit volume.Effective ratio area=effective surface area ÷ Volume, unit m2/m3；
3) specific gravity: the density ratio that support density and room temperature are lauched；
4) voidage: between carrier and carrier and the volume of carrier intermediate gaps and carrier stack the ratio between volume；
5) fluidize: filler flows with water flow sufficiently connect with water quality pollutant in a liquid under the active force for being aerated or stirring The state of touching, suspending carrier do not generate accumulation, can flow freely in pond with water flow；
6) filling rate: suspending carrier filling rate, the i.e. ratio of the volume of suspending carrier and filling region pool capacity, suspending carrier Volume be natural packing under total volume；Such as 100m3Suspending carrier, filling to 400m3Pool capacity, filling rate 25%；
7) surface loading: the pollutant quality that unit packing specific area removes daily, gN/m2/d；
8) ammoxidation surface loading: unit packing specific area aoxidizes the quality of ammonia nitrogen daily；, gN/m2/d；If intaking ammonia Nitrogen 400mg/L is discharged ammonia nitrogen 200mg/L, flow of inlet water 5m3/ d, biomembrane area 1000m2, then ammoxidation surface loading be (500-200) × 5/1000=1.5gN/m2/d；
9) TN removes surface loading: the total nitrogen quality that unit filler effective ratio area removes daily, gN/m2/d；If into Water TN500mg/L is discharged TN 100mg/L, flow of inlet water 10m3/ d, biomembrane area 2000m2, then it is negative to remove surface by TN Lotus is (500-100) × 10/2000=2gN/m2/d；
10) ammoxidation volumetric loading: unit volume reaction tank aoxidizes the quality of ammonia nitrogen, kgN/m daily3/d；If intaking ammonia Nitrogen 400mg/L is discharged ammonia nitrogen 200mg/L, flow of inlet water 50m3/ d reacts pool volume 10m3, then ammoxidation surface loading be (500-200) × 50/1000/10=1.5kgN/m3/d；
11) TN removes volumetric loading: the total nitrogen quality that unit volume reaction tank removes daily, kgN/m3/d；If water inlet TN500mg/L is discharged TN 100mg/L, flow of inlet water 100m3/ d reacts pool volume 20m3, then TN remove surface loading be (500-100) × 100/1000/20=2kgN/m3/d；
12) autotrophic denitrification: the technique is the general designation of nitrosation and Anammox (ANAMMOX), to reach denitrogenation Purpose；Under aerobic condition, ammonia oxidation bacteria (AOB) is by ammonia nitrogen partial oxidation at nitrous acid, the nitrous acid and some residual of generation Ammonia nitrogen anaerobic ammonia oxidizing bacteria (AnAOB) effect issue anaerobic ammonium oxidation of beginning to detest (ANAMMOX) reaction generate nitrogen；
13) CANON technique realizes autotrophic denitrification in single-reactor；In CANON, AOB and AnAOB are same Reactor coexists；AOB is located at the outer layer of carrier, makees electron acceptor with oxygen, is sub- nitrogen by ammonium oxidation；AnAOB is located at carrier Internal layer, using sub- nitrogen as electron acceptor with remaining ammonia nitrogen cotransformation as nitrogen；
14) CANON suspending carrier: the suspending carrier of i.e. existing CANON effect, AOB and AnAOB divide in a manner of biomembrane Layer exists；
15) nitrosation: microorganism is by ammonia nitrogen (NH4 +) it is oxidized to nitrite nitrogen (NO2 -), without being further oxidized to Nitrate nitrogen (NO3 -) process, i.e., enriching ammonia oxidation bacteria (AOB) in system, and eliminate nitrite oxidizing bacteria (NOB)；
16) MBBR: moving bed biofilm reactor MBBR (Moving Bed Biofilm Reactor) this method passes through A certain number of suspending carriers are added into reactor, biomass and biological species in reactor are improved, to improve reaction The treatment effeciency of device；
17) aeration intensity: the aeration quantity of unit area, unit m3/m2/ h, including micro-pore aeration and boring aeration two / and；If micro-pore aeration amount is 10m3/ h, boring aeration amount are 5m3/ h, the floor space of reactor are 5m2, aeration intensity is (10+5)/5=3m3/m2/h；
18) ratio that the water that biological section is continued with accounts for total Water, % reflux ratio: are back to；
19) total ammonia oxidation rate: the total amount of ammonia that water inlet aoxidizes after multi-stage aerobic reaction tank accounts for ammonia nitrogen amount in total water inlet Ratio, %；If influent ammonia nitrogen 400mg/L, ammonia nitrogen 100mg/L is discharged after two-stage aerobic reaction tank, then total ammonia oxidation rate For (400-100)/400=75%；For single-stage reactor, generally directly it is referred to as ammonia oxidation rate；For multistage reactor, ammonia Oxygenation efficiency refers to ammonium oxidation situation at different levels, if the multistage whole performance of analysis, uses total ammonia oxidation rate；
20) TN removal rate: the removal amount of total nitrogen accounts for the ratio into water total nitrogen；
21) ordinary activated sludge: i.e. sewage plant biochemistry pool activated sludge is inoculated with the mainly preliminary acquisition AOB bacterium of the sludge Kind, accelerate biofilm；
22) C/N: carbon-nitrogen ratio of intaking, BOD in fingering water5With the ratio of kjeldahl nitrogen (organic nitrogen+ammonia nitrogen)；
23) it pre-processes: if the excessive unsuitable autotrophic denitrification related process processing of water inlet C/N, needs to carry out pretreatment reduction Content of organics, until meeting autotrophic denitrification water quality requirement；
24) agitator power: the i.e. power number of unit basin's effective volume, W/m3；Activated sludge process is usually 3-5W/m3；MBBR In, power of agitator is related to filling rate, and filling rate is higher, and power of agitator is bigger.
Following first reaction tanks, the second reaction tank, third reaction tank, the 4th reaction tank abbreviation C1, C2, C3, C4, first into Water valve, the second inlet valve, third inlet valve, the 4th inlet valve abbreviation I1, I2, I3, I4, the first communicating valve, the second communicating valve, Tee joint valve, the 4th communicating valve abbreviation M1, M2, M3, M4, the first outlet valve, the second outlet valve, third outlet valve, the 4th water outlet Valve abbreviation E1, E2, E3, E4, first intercept sieve, second intercept sieve, third intercepts sieve, the 4th intercept sieve abbreviation S1, S2, S3, S4, the first sludge reflux pump, the second sludge reflux pump, third sludge reflux pump, the 4th sludge reflux pump abbreviation B1, B2、B3、B4。
The present invention, it is a kind of for handling the efficient autotrophic denitrification system of high ammonia-nitrogen wastewater, referring to figs. 1 and 2, including It is water inlet manifold road 1, denitrification pond 2, distribution well 3, reaction tank main body C1-C4, wet well 4, sedimentation basin 5, total outlet pipe road 6, anti- Answer pond agitating device 7, denitrification pond agitating device 8, communication apparatus, distribution well sludge reflux pump H1, the reflux of sedimentation basin mixed liquor Pump H2, reaction tank main body is two rows of two column, four reaction tanks, respectively the first reaction tank, the second reaction tank, third reaction tank and 4th reaction tank, wherein the first reaction tank and the 4th reaction tank are a row and are located at bottom, the first reaction tank and the second reaction tank It for a column, is equivalent to the first reaction tank and is located at lower left, be respectively then the second reaction tank, third reaction according to clockwise direction Pond and the 4th reaction tank, technique center be concentric circles centerwell, set gradually from inside to outside denitrification pond, distribution well, wet well, Sedimentation basin.
The upper side (close to wet well end) of first reaction tank and the 4th reaction tank is respectively arranged with the first water inlet and the Four water inlets are intake thereto by I1 and I4, the side-lower of the second reaction tank and third reaction tank be respectively arranged with second into The mouth of a river and third water inlet, are intake thereto by I2 and I3, the first water outlet, the second water outlet, third water outlet and the 4th Water outlet is respectively arranged with the first interception sieve S1, the second interception sieve S2, third and intercepts sieve S3 and the 4th and intercept sieve S4, it is diagonally disposed that the first interception sieve, the second interception sieve, third, which intercept sieve and the 4th interception sieve,；Above-mentioned One water inlet, the second water inlet, third water inlet and the 4th water inlet pass through respectively the first inlet pipeline, the second inlet pipeline, Third inlet pipeline and the 4th inlet pipeline are connect with above-mentioned distribution well, and are provided with first on above-mentioned first inlet pipeline The second inlet valve I2 is arranged on the second inlet pipeline by inlet valve I1, is arranged third inlet valve I3 on third inlet pipeline, the 4th into 4th inlet valve I4 is set in water lines；Denitrification pond is provided with water inlet manifold road 1, denitrification pond and intercepts sieve 9, denitrification pond Agitating device 8 is intake by water inlet manifold road 1；Treatment sewage enters the bottom in denitrification pond through water inlet manifold road, is discharged through institute The interception sieve 9 for stating denitrification pond top enters distribution well 3.First reaction tank, the second reaction tank, third reaction tank, the 4th are instead The water outlet of Ying Chi passes through the first outlet pipeline, the second outlet pipeline, third outlet pipeline and the 4th outlet pipeline respectively and sinks Shallow lake pond 5 connects, and is correspondingly arranged in the first outlet pipeline, the second outlet pipeline, third outlet pipeline and the 4th outlet pipeline First outlet valve E1, the second outlet valve E2, third outlet valve E3 and the 4th outlet valve E4.Four muddy water are arranged in sedimentation basin to buffer Plate 10 is connect with the first outlet pipeline, the second outlet pipeline, third outlet pipeline, the 4th outlet pipeline respectively；
Four reaction tanks of piping connection are arranged in distribution well, set inlet valve I1, I2, I3, I4 on pipeline；Pipeline is arranged in sedimentation basin Four reaction tanks are connected, four reaction tank water outlets are collected by inlet pipeline and outlet valve E1, E2, E3, E4, are arranged through pond body top Enter wet well 4, wet well is collected sedimentation basin water outlet and is discharged through pond body top total outlet pipe road 6, is arranged in the bottom of distribution well There is the first mud discharging mouth for spoil disposal, the bottom of sedimentation basin is provided with the second mud discharging mouth for spoil disposal；
An agitating device is respectively provided in each reaction tank, the specific structure and the method for operation of agitating device are used for reference existing Technology can be realized, as frequency conversion blender can be selected in agitating device.
Reflux pump is arranged on sedimentation basin top in above-mentioned sedimentation basin mixed liquor reflux pump, return pipe is passed through denitrification pond；
Reflux pump is arranged in water outlet bottom in above-mentioned wet well sludge reflux pump, return pipe is passed through denitrification pond；
Above-mentioned communicating valve is connected that is, between reactor by communicating valve, including the first communicating valve, the second communicating valve, the Tee joint valve, the 4th communicating valve；Wherein, connecting line of first communicating valve between the first reaction tank and the second reaction tank On, for the second communicating valve on the connecting line between the second reaction tank and third reaction tank, it is anti-that third connecting valve is located at third On connecting line between Ying Chi and the 4th reaction tank, the 4th communicating valve is between the one or four reaction tank and the first reaction tank On connecting line；
Above-mentioned reaction tank sludge reflux pump, including the first sludge reflux pump B1, the second sludge reflux pump B2, third sludge Reflux pump B3, the 4th sludge reflux pump B4, are arranged at precipitating bottom of pond portion, and return pipe each leads into the first reaction tank, second instead Ying Chi, third reaction tank, the 4th reaction bottom of pond portion；
Aerator is distributed in each reaction tank, is made of multiple groups boring aeration pipe and micropore aerating pipe, and in anti-nitre Change in pond and each reaction tank and has added suspending carrier.
The second, main explanation is done to operational process of the invention below with reference to above system.
Operational process has following 3 kinds of control models:
1) parallel running mode: treatment sewage pass through denitrification pond 2, by denitrification pond pond body top intercept sieve 9 into Enter distribution well 3, continuously enters each reaction tank C1- by inlet valve I1-I4, first to fourth interception sieve S1-S4 by distribution well C4, water outlet by interception sieve S1-S4, outlet valve E1-E4 to sedimentation basin 5, enter wet well 4 through sedimentation basin top respectively, by The total outlet pipe road 6 on wet well top is discharged；Four ponds are parallel relationship, independent operating, the final precipitating for being aggregated into center of water outlet Pond 5 is discharged after wet well 4 by the total outlet pipe road 6 on wet well top, is controlled in the process by valve；Valve is not described equal It is in off state；
2) bi serie A operational mode: treatment sewage passes through denitrification pond 2, intercepts sieve 9 by denitrification pond pond body top Into distribution well 3, passes through inlet valve I1, I4 respectively by distribution well and continuously enter reaction tank C1, C4；C1 water outlet is intercepted by first Sieve S1, communicating valve M1, the second interception sieve S2 enter reaction tank C2, C2 water outlet by second intercept sieve S2, outlet valve E2, Sedimentation basin 5 is discharged after wet well 4 by the total outlet pipe road 6 on wet well top；C4 water outlet intercepts sieve S4 by the 4th, connects Port valve M3, third intercept sieve S3 and enter reaction tank C3, and C3 water outlet intercepts sieve S3, outlet valve E3, sedimentation basin 5 by third, It is discharged out after wet well 4 by the total outlet pipe road 6 on wet well top；Bi serie mode A, i.e., two groups in parallel, every group of two lattice point It does not connect, i.e. C1-C2, C4-C3, water outlet is finally aggregated into sedimentation basin 5, the wet well 4 at center, by total water outlet on wet well top Pipeline 6 is discharged；
3) bi serie B operational mode: treatment sewage passes through denitrification pond 2, intercepts sieve 9 by denitrification pond pond body top Into distribution well 3, passes through inlet valve I1 respectively by distribution well, intercept sieve S1, continuously enter reaction tank C1；C1 water outlet passes through the One intercept sieve S1, the 4th intercept sieve S4, communicating valve M1, communicating valve M4, into reaction tank C2, C4；C2 water outlet passes through second It intercepts sieve S2, communicating valve M2, third interception sieve S3 and enters C3, C3 water outlet intercepts sieve S3 by third, outlet valve E3, sinks Shallow lake pond 5 is discharged after wet well 4 by the total outlet pipe road 6 on wet well top；C4 water outlet intercepts sieve S4, water outlet by the 4th Valve E4, sedimentation basin 5 enter wet well 4 through sedimentation basin top, are discharged by the total outlet pipe road 6 on wet well top；Bi serie B mould Formula, i.e., two groups in parallel: one group of three lattice series connection, and one group of two lattice series connection, i.e. C1-C2-C3, C1-C4, water outlet are finally aggregated into center Sedimentation basin 5 is discharged after wet well 4 by the total outlet pipe road 6 on wet well top.
Why different operational modes is set, the main function need for considering to meet different reactor, different operation phase It asks.
Third, starting method of the present invention, comprising the following steps:
1) starting prepares, and suspending carrier, filling rate 20%-67% are added in each reaction tank and denitrification pond；Instead Ying Chi and denitrification pond are inoculated with ordinary activated sludge, and sludge concentration is 3-5g/L after inoculation；
2) nitrosation and denitrification starting, using parallel running mode, carrying out practically mode are as follows: first reaction Pond, the second reaction tank, third reaction tank and the 4th reaction tank are coordinations, and each reaction tank is independently intake, is independently discharged, and Water outlet is made to collect sedimentation basin by controlling related valve, sedimentation basin part effluent recycling to denitrification pond, remaining water outlet is through going out Well is discharged by total outlet pipe road；Distribution well sludge reflux pump is opened by sludge reflux to denitrification pond, the daily short time opens It precipitates bottom of pond portion second row mud mouth and water distribution bottom first row mud mouth carries out spoil disposal, be lost sludge gradually, daily sludge is dense Degree, which reduces, is no more than 10%, up to sludge concentration is about 1.0g/L in sludge concentration < 0.5g/L in denitrification pond, reaction tank；Control Reaction tank DO processed is in 1.5-3.0mg/L, aeration intensity > 4m3/m2/ h, operation is until denitrification pond BOD5Removal rate > 50%, and it is each Reaction tank ammoxidation volumetric loading > 1.0kgN/m3/ d, into next step；
3) autotrophic denitrification pretrigger, using bi serie A operational mode, continuum micromeehanics make to obtain by controlling related valve Water collects sedimentation basin, sedimentation basin part effluent recycling to denitrification pond, remaining water outlet is discharged through wet well by total outlet pipe road； C4, C3 control DO in 1.5-3mg/L, aeration intensity > 4.0m3/m2The total ammonia oxidation rate > 60% of/h, C4, C3；Control is stirred in C1, C2 Revolving speed 30-45r/min is mixed, controls DO in 1-1.5mg/L, aeration intensity > 3m3/m2/h；Operation is until the total ammonia oxidation rate > of C1, C2 60%, reaction tank C1 ammoxidation volumetric loading > 0.4kgN/m3/ d, into next step；
4) autotrophic denitrification inoculation starting, using bi serie A operational mode, continuum micromeehanics are made by controlling related valve Water outlet collects sedimentation basin, sedimentation basin part effluent recycling to denitrification pond, remaining water outlet is discharged through wet well by total outlet pipe road； CANON suspending carrier, rate of vaccination 3-5%, continuum micromeehanics are inoculated with to the first reaction tank；C4, C3 control DO in 1.5-3.0mg/ L, aeration intensity > 5.0m3/m2/ h, C4 and the total ammonia oxidation rate > 60% of C3；C1 control control agitating device revolving speed 15-30r/min, DO is controlled in 0.5-1.0mg/L, aeration intensity > 2m3/m2/h；C2 controls agitating device revolving speed 15-30r/min, and control DO exists 1.0-1.5mg/L, aeration intensity > 3m3/m2/h；Operation is until the TN of the first reaction tank removes volumetric loading > 1.0kgN/m3/ d into Enter in next step；
5) autotrophic denitrification stream adds starting, using bi serie B operational mode, continuum micromeehanics；Made by controlling related valve Water outlet collects sedimentation basin, sedimentation basin part effluent recycling to denitrification pond, remaining water outlet is discharged through wet well by outlet pipeline；C1 Agitating device revolving speed 15-30r/min is controlled, controls DO in 1.0-2.0mg/L, aeration intensity > 4.0m3/m2/h；C2, C4 control are stirred Device rotary speed 30-45r/min is mixed, controls DO in 0.5-1.0mg/L, aeration intensity > 2m3/m2/h；C3 controls agitating device revolving speed 30-45r/min controls DO in 1.0-2.0mg/L, aeration intensity > 3m3/m2/ h opens each reaction tank reflux pump for sedimentation basin dirt Mud is back to each reaction tank；Operation is until the TN of C2, C4 remove volumetric loading > 1.5kgN/m3/ d, into next step；
6) autotrophic denitrification expands starting, using bi serie A operational mode, by C4 and C3 with the difference 50% in C1 and C2 Floating stuffing displacement, each reaction tank control agitating device revolving speed 15-30r/min, and control DO is aerated in 1.0-2.0mg/L Intensity > 4m3/m2/h；Water outlet is made to collect sedimentation basin, sedimentation basin part effluent recycling to denitrification by controlling related valve Pond, remaining water outlet are discharged through wet well by total outlet pipe road；Operation is until the TN of each reaction tank removes volumetric loading > 2.0kgN/ m3/ d, into next step；
7) autotrophic denitrification stable operation, continuum micromeehanics；Continuum micromeehanics；When TN removal rate requires < 80%, using simultaneously through transport Row mode, each reaction tank control agitating device revolving speed 30-45r/min, control DO in 2.0-4.0mg/L, aeration intensity > 5m3/ m2/ h makes water outlet collect sedimentation basin, sedimentation basin part effluent recycling to denitrification pond, remaining water outlet by controlling related valve It is discharged through wet well by total outlet pipe road；Maintaining each reaction tank sludge concentration is about 3.0g/L；Each reaction tank water outlet ammonia nitrogen is in 60- The TN of 100mg/L, each reaction tank remove volumetric loading > 2.0kgN/m3/ d, denitrification pond BOD5Removal rate > 50%；When TN is removed When rate requires >=80%, using bi serie A operational mode, C2 or C3 are discharged ammonia nitrogen and control stirring in 30-50mg/L, C1 and C4 Device rotary speed 30-45r/min controls DO in 2.0-4.0mg/L, aeration intensity > 5m3/m2/ h, TN removal rate > 50%, reaction tank C2 and reaction tank C3 controls agitating device revolving speed 15-30r/min, controls DO in 1.0-2.0mg/L, aeration intensity > 3m3/m2/ H makes water outlet collect sedimentation basin, sedimentation basin part effluent recycling to denitrification pond, remaining water outlet warp by controlling related valve Wet well is discharged by total outlet pipe road.
In above-mentioned steps, when intake C/N < 1 when, the control of wet well reflux ratio is in 150%-200%, as 1≤C/N of intaking < 1.5, the control of wet well reflux ratio in 200%-250%, when intake 1.5≤C/N < 2 when, wet well reflux ratio, which controls, to exist 250-300%；It is 30-50r/min that denitrification pond, which controls speed of agitator,；And in step 3) -7) each reaction tank sludge of process unlatching Clarifier sludge is back to each reaction tank by reflux pump B1-B4, or is opened precipitating bottom of pond portion second row mud mouth and carried out spoil disposal, is maintained Sludge concentration is about 1.50g/L in reaction tank；It is dense that the first mud discharging mouth by opening water distribution bottom controls denitrification pond sludge Spend < 0.5g/L；And add in start-up course in autotrophic denitrification stream, when the first reaction tank is intake to the second, the 4th reaction tank respectively Flow of inlet water ratio is preferably controlled 2/3,1/3；The agitator power of each reaction tank and denitrification pond agitating device is 15- 50W/m3Type selecting.
4th, it remarks additionally:
1) why one-part form autotrophic denitrification is realized in the form of MBBR combination activated sludge, essentially consist in using two sections Formula technique, control is complicated, needs to control nitrosation water outlet proportion, meets the requirement of ANAMMOX technique；Using granule sludge mode, AnAOB is not easy to be enriched with, and activated sludge process is easy to be lost, it is difficult to starting or granulating；Using the pure film mode of MBBR, denitrifying load Transmission by matrix in biomembrane is related, such as biofilm density, thickness, temperature, substrate concentration, in addition, since AOB is to MBBR The ecological niche of filler occupy power and adhesive ability is weak compared with AnAOB, be easy to fall off from filler, thus long-term running MBBR from Feeding denitrogenation may finally cause system nitrosation effect limited due to the loss of AOB, final to influence total nitrogen removal effect.For Autotrophic denitrification microorganism, attached state and suspended state show entirely different property feature, can not be by the correlation of activated sludge process The characteristics of method is directly used in biofilm, needs for autotrophic denitrification, tri- activated sludge, MBBR technique, specific aim control. For improvement matrix transmission rate, AOB and AnAOB is split, the efficiency of denitrogenation is improved, it is excellent in conjunction with both MBBR and activated sludge process Point, using the process form of MBBR combination activated sludge；
2) each stage DO control requires different, and main cause provides aerobic or detests by control DO for autotrophic denitrification biomembrane Oxygen environment guarantees AOB and AnAOB living environment, and with the thickness change and maturing course of biomembrane, adjusts DO level, full Sufficient biomembrane layering requires；Biomembrane is more mature, and biofilm thickness is opposite to be increased, stronger for the tolerance of DO, needs more High DO is horizontal；Meanwhile the opposite increase of biofilm thickness, it is also desirable to which higher shearing controls biofilm thickness, prevents biomembrane It is blocked up；Therefore DO and aeration intensity two indices is required to be controlled simultaneously；The autotrophic denitrification technique of MBBR form, due to having belonged to Full biofilm system, with traditional activated sludge process in control method, feature very different；For activated sludge process, autotrophic denitrification The general DO of technique is no more than 1mg/L；
3) each stage running mode is different, main to consider vaccination ways and the method for operation, biofilm detachment, although belonging to old Change process falls off naturally, but still has more active bacteria, can be inoculated with for subsequent reactor, accelerates start-up course, therefore uses a variety of Operational mode is gradually inoculated with, and in autotrophic denitrification inoculation start-up course, the first reaction tank is to the second, the 4th reaction tank feed water flow Amount ratio benefit is controlled 2/3,1/3；
4) when the control of autotrophic denitrification reaction tank speed of agitator is to be aerated deficiency, auxiliary suspending carrier fluidisation, and it is anti- It only shears too small biomembrane to thicken, or the excessive biofilm detachment of shearing；
5) scope of application, the present invention are suitble to high ammonia nitrogen, C/N < 2, and hot waste water is especially suitable for anaerobic sludge and digests supernatant The processing of liquid, landfill leachate etc.；
6) be directed to different water inlet C/N, need to be arranged different reflux ratios, main cause be with the increase of water inlet C/N, Influence of the COD to autotrophic denitrification system in water inlet can be eliminated with intensified anti-nitrated process by raising reflux ratio, while improve denitrogenation effect Rate.
For known to industry professional, when intake C/N >=2 when, increase pretreatment and meet the requirements.
When inlet water temperature is not at 25-35 DEG C, to increase heat-exchange system known to industry professional.
For known to industry professional, above-mentioned suspending carrier, i.e., specific gravity is more smaller than water before biofilm, usually 0.93- 0.97, specific gravity and water are close after biofilm, realize suspension effect, generally high density polyethylene (HDPE) material etc..
Installation is needed to prevent short stream device between connecting line known to industry professional, to come together in single reaction tank, Such as partition, training wall prevent from mixing into water uneven.
The present invention will be further described combined with specific embodiments below.
Embodiment 1:
The high-concentration ammonia nitrogenous wastewater generated using in certain bio-engineering corporation's production process is intake as system, water 3000m3/ d, pH mean value 7.9,32 DEG C of water temperature mean value, inlet COD concentration mean value 2500mg/L, BOD5Concentration mean value 1500mg/L, Ammonia nitrogen concentration mean value 800mg/L, sub- nitrogen nitrate nitrogen concentration mean value 2.0mg/L, basicity mean value is (with CaCO3Meter) 5000mg/L, reaction The total dischargeable capacity 800m of Chi3, denitrification pond dischargeable capacity 800m3, intake and enter four reaction tank C1-C4 through denitrification pond.
Starting prepares, and suspending carrier, carrier effective ratio area are added in each reaction tank and denitrification pond 800m2/m3, voidage 90% meets " water process high density polyethylene (HDPE) suspending carrier " (CJ/T461-2014) professional standard, Filling rate 50%；Reaction tank is inoculated with ordinary activated sludge, and sludge concentration is 5g/L in each reaction tank；
Nitrosation and denitrification starting, using parallel running mode, each reaction tank is independently intake, is independently discharged, and logical Crossing control related valve makes water outlet collect sedimentation basin, and sedimentation basin part effluent recycling to denitrification pond, remaining water outlet is through being discharged Well is discharged by total outlet pipe road；It opens each reaction tank sludge reflux pump (B1-B4) and clarifier sludge is back to each reaction tank；It opens Distribution well sludge reflux pump (H1) is opened by sludge reflux to denitrification pond；Reaction tank DO is controlled in 2.5mg/L, aeration intensity 5m3/ m2/ h to be discharged and collects sedimentation basin by unlatching outlet valve E1-E4, sedimentation basin part effluent recycling to denitrification pond, remaining Water outlet is discharged through wet well by total outlet pipe road, and the daily short time opens water distribution bottom first row mud mouth and sedimentation basin after operation The second mud discharging mouth of bottom carries out spoil disposal, is lost sludge gradually, and daily sludge concentration, which reduces, is no more than 10%, operation to 11d Reaction tank sludge concentration is down to 1.0g/L and denitrification pond sludge concentration is down to 0.5g/L.Operation to 17d system is discharged ammonia nitrogen Concentration mean value 392mg/L.System ammonia oxidation rate 51%, ammoxidation volumetric loading 1.5kgN/m3/ d, denitrification pond BOD5Removal rate 90%, into next step.
Autotrophic denitrification pretrigger, using bi serie A operational mode, continuum micromeehanics, reaction tank C1, reaction tank C2 control stirring Revolving speed 30r/min controls DO in 1.0mg/L, aeration intensity 3.0m3/m2/ h, reaction tank C4, reaction tank C3 control DO are in 3.0mg/ L, aeration intensity 4m3/m2/ h, C4 and the total ammonia oxidation rate > 70% of C3；Water outlet is made to collect precipitating by opening outlet valve E2, E3 Pond, sedimentation basin part effluent recycling to denitrification pond, remaining water outlet are discharged through wet well by outlet pipeline；Run 10d after, C1 and The total ammonia oxidation rate 61% of C2, C1 ammoxidation surface loading are 0.5kgN/m3/ d, denitrification pond BOD5Removal rate 90%, entrance is next Step；
Autotrophic denitrification inoculation starting is inoculated with CANON suspending carrier, inoculation to reaction tank C1 using bi serie A operational mode Rate is 4%, continuum micromeehanics；Agitating device revolving speed 30r/min, DO are in 0.8mg/L, aeration intensity 2m for reaction tank C1 control control3/ m2/h；Reaction tank C2 controls agitating device revolving speed 30r/min, DO in 1.0mg/L, aeration intensity 3m3/m2/h；It is reaction tank C4, anti- Answer pond C3 control DO in 3.0mg/L, aeration intensity 4m3/m2/ h, C4 and the total ammonia oxidation rate > 77% of C3；By controlling related valve So that water outlet collects sedimentation basin, sedimentation basin part effluent recycling to denitrification pond, remaining water outlet is through wet well by total outlet pipe road Discharge；24d is run until the TN of reaction tank C1 removes volumetric loading 1.5kgN/m3/ d, denitrification pond BOD5Removal rate 90%, into Enter in next step；
Autotrophic denitrification stream adds starting, and using two-in-series B operational mode, the first reaction tank controls agitating device revolving speed 30r/ Min, DO are in 1.5mg/L, aeration intensity 4m3/m2/h；Second reaction tank, the 4th reaction tank control agitating device revolving speed 35r/min, DO is in 0.8mg/L, aeration intensity 2m3/m2/h；Third reaction tank controls agitating device revolving speed 45r/min, DO in 1.2mg/L, exposes Gas intensity 4m3/m2/ h makes water outlet collect sedimentation basin, sedimentation basin part effluent recycling to denitrification by controlling related valve Pond, remaining water outlet have the discharge of total outlet pipe road through wet well；The TN for running 19d to the second reaction tank, the 4th reaction tank, which is removed, to be held Product load 2.0kgN/m3/ d, denitrification pond BOD5Removal rate 80%, into next step；
Autotrophic denitrification expands starting, using bi serie A operational mode, continuum micromeehanics；By in C4 and C3 reaction tank with C1 and The floating stuffing of difference 50% in C2 reaction tank is replaced, and each reaction tank controls agitating device revolving speed 30r/min, and DO exists 1.0mg/L, aeration intensity 4m3/m2/h；Water outlet is made to collect sedimentation basin, sedimentation basin part effluent recycling by controlling related valve To denitrification pond, remaining water outlet is discharged through wet well by total outlet pipe road；15d is run until the TN removal surface of each reaction tank is negative Lotus 2.3kgN/m3/ d, into next step；
Autotrophic denitrification system stable operation, using bi serie A operational mode, C2 or C3 are discharged ammonia nitrogen 30-50mg/L, C1 and C4 controls agitating device revolving speed 45r/min, DO in 2.0mg/L, aeration intensity > 5m3/m2/ h, TN removal rate > 50%, reaction tank C2 and reaction tank C3 controls agitating device revolving speed 30r/min, DO in 1.5mg/L, aeration intensity > 4m3/m2/ h, by controlling phase Closing valve makes water outlet collect sedimentation basin, and sedimentation basin part effluent recycling to denitrification pond, remaining water outlet is through wet well by always going out Water lines discharge；Each reaction tank TN removes volumetric loading 2.6kgN/m3/ d, denitrification pond BOD5Removal rate > 70%；
In above-mentioned steps, clarifier sludge reflux ratio is controlled always 300% out, and denitrification pond controls speed of agitator 45r/ Min, and open reaction tank sludge reflux pump B1-B4 during autotrophic denitrification pretrigger to autotrophic denitrification system stable operation and return Sludge is flowed, or opens precipitating bottom of pond portion second row mud mouth and carries out spoil disposal, maintaining sludge concentration in reaction tank is about 1.50g/L, is led to Cross the first mud discharging mouth control denitrification pond sludge concentration < 0.5g/L for opening water distribution bottom；Final stable operation stage is entire System nitrogen removal rate reaches 92%, and wherein the nitrogen removal rate of denitrification pond contribution is 24%.
Embodiment 2:
Test sludge-digestion liquid is the dehydration filtrate after the sludge digestion of certain sewage treatment plant, which uses Mesophilic anaerobic digestion process sludge is 10% into mud solid content.Water 2000m3/ d, pH value 7.8-7.9, water temperature mean value 30 DEG C, inlet COD concentration mean value 810mg/L, BOD5Concentration mean value is 620mg/L, average ammonia nitrogen concentration 560mg/L, and reaction tank is total Dischargeable capacity 400m3, four reaction tanks are equally divided into, each reaction tank dischargeable capacity is 100m3, denitrification pond effective volume 100m3, intake and respectively enter four reaction tank C1-C4 behind denitrification pond.
Starting prepares, and suspending carrier, carrier effective ratio area are added in each reaction tank and denitrification pond 800m2/m3, voidage 90% meets " water process high density polyethylene (HDPE) suspending carrier " (CJ/T461-2014) professional standard, Filling rate 50%；Reaction tank is inoculated with ordinary activated sludge, and sludge concentration is 5.0g/L in each reaction tank；
Nitrosation and denitrification starting, using parallel running mode, each reaction tank is independently intake, is independently discharged, and logical Crossing control related valve makes water outlet collect sedimentation basin, and sedimentation basin part effluent recycling to denitrification pond, remaining water outlet is through being discharged Well is discharged by total outlet pipe road；It opens each reaction tank sludge reflux pump (B1-B4) and clarifier sludge is back to each reaction tank；It opens Distribution well sludge reflux pump (H1) is opened by sludge reflux to denitrification pond；Reaction tank DO is controlled in 1.5mg/L, aeration intensity 4m3/ m2/ h to be discharged and collects sedimentation basin by unlatching outlet valve E1-E4, sedimentation basin part effluent recycling to denitrification pond, remaining Water outlet is discharged through wet well by total outlet pipe road, and the daily short time opens water distribution bottom first row mud mouth and sedimentation basin after operation The second mud discharging mouth of bottom carries out spoil disposal, is lost sludge gradually, and daily sludge concentration, which reduces, is no more than 10%, operation to 10d Reaction tank sludge concentration is down to 1.0g/L and denitrification pond sludge concentration is down to 0.5g/L.Operation to 19d system is discharged ammonia nitrogen Concentration mean value 260mg/L.System ammonia oxidation rate 53%, each reaction tank ammoxidation volumetric loading 1.87kgN/m3/ d, denitrification pond BOD5Removal rate 90%, into next step.
Autotrophic denitrification pretrigger, using bi serie A operational mode, continuum micromeehanics, reaction tank C4, reaction tank C3 control DO exist 2.5mg/L, aeration intensity 4m3/m2/h；Speed of agitator 30r/min is controlled in reaction tank C1, reaction tank C2, DO is in 1mg/L for control, Aeration intensity 3m3/m2/ h makes water outlet collect sedimentation basin by opening outlet valve E2, E3, and sedimentation basin part effluent recycling is to anti- Nitrification tank, remaining water outlet are discharged through wet well by outlet pipeline；After running 9d, C4 and C3 total ammonia oxidation rate > 79%, C1 and C2 Total ammonia oxidation rate 61%, C1 ammoxidation surface loading are 0.45kgN/m3/ d, denitrification pond BOD5Removal rate 90%, entrance is next Step；
Autotrophic denitrification inoculation starting is inoculated with CANON suspending carrier, inoculation to reaction tank C1 using bi serie A operational mode Rate is 5%, continuum micromeehanics；Agitating device revolving speed 30r/min, DO are in 0.7mg/L, aeration intensity 2m for reaction tank C1 control control3/ m2/h；Reaction tank C2 controls agitating device revolving speed 30r/min, DO in 1.0mg/L, aeration intensity 3m3/m2/h；Reaction tank C4, C3 DO is controlled in 2.5mg/L, aeration intensity 4m3/m2/h；Water outlet is made to collect sedimentation basin, sedimentation basin part by controlling related valve Effluent recycling to denitrification pond, remaining water outlet is discharged through wet well by total outlet pipe road；24d is run until the total ammoxidation of C4 and C3 The TN of rate > 77%, reaction tank C1 remove volumetric loading 1.1kgN/m3/ d, denitrification pond BOD5Removal rate 90%, entrance is next Step；
Autotrophic denitrification stream adds starting, and using two-in-series B operational mode, C1 controls agitating device revolving speed 30r/min, and DO exists 1.5mg/L, aeration intensity 4m3/m2/h；C2, C4 control agitating device revolving speed 35r/min, DO in 0.8mg/L, aeration intensity 2m3/ m2/h；Third reaction tank controls agitating device revolving speed 45r/min, DO in 1.2mg/L, aeration intensity 4m3/m2/ h, by controlling phase Closing valve makes water outlet collect sedimentation basin, sedimentation basin part effluent recycling to denitrification pond, remaining water outlet has always to go out through wet well Water lines discharge；The TN for running 20d to the second reaction tank, the 4th reaction tank removes volumetric loading 1.9kgN/m3/ d, denitrification pond BOD5Removal rate 90%, into next step；
Autotrophic denitrification expands starting, using bi serie A operational mode, continuum micromeehanics；By in C4 and C3 reaction tank with C1 and The floating stuffing of difference 50% in C2 reaction tank is replaced, and each reaction tank controls agitating device revolving speed 30r/min, and DO exists 1.0mg/L, aeration intensity 4m3/m2/h；Water outlet is made to collect sedimentation basin, sedimentation basin part effluent recycling by controlling related valve To denitrification pond, remaining water outlet is discharged through wet well by total outlet pipe road；15d is run until the TN removal surface of each reaction tank is negative Lotus 2.0kgN/m3/ d, into next step；
Autotrophic denitrification system stable operation, using parallel running mode, each reaction tank controls agitating device revolving speed 45r/ Min, DO are in 2.0mg/L, aeration intensity 5m3/m2/ h makes water outlet collect sedimentation basin, sedimentation basin part by controlling related valve Effluent recycling to denitrification pond, remaining water outlet is discharged through wet well by total outlet pipe road, maintains denitrification pond sludge concentration < 0.5g/L；Each reaction tank water outlet ammonia nitrogen is in 60-100mg/L, and the TN removal volumetric loading of each reaction tank is up to 2.26kgN/m3/ d, Denitrification pond BOD5 removal rate > 75%；
In above-mentioned steps, clarifier sludge reflux ratio is controlled always 200%, and denitrification pond controls speed of agitator 45r/ Min, and open reaction tank sludge reflux pump B1-B4 during autotrophic denitrification pretrigger to autotrophic denitrification system stable operation and return Sludge is flowed, or opens precipitating bottom of pond portion second row mud mouth and carries out spoil disposal, maintaining sludge concentration in reaction tank is about 1.50g/L, is led to Cross the first mud discharging mouth control denitrification pond sludge concentration < 0.5g/L for opening water distribution bottom；Final stable operation stage is entire System nitrogen removal rate reaches 85%, and wherein the nitrogen removal rate of denitrification pond contribution is 18%.
The present invention controls four reaction tank water discharging directions by communicating valve and realizes reaction tank series connection, arranged side by side or isolated operation； By be inoculated with, flow plus etc. means realize autotrophic denitrification technique quick start；According to processing standard requirements, different technique is realized Arrangement form.
It uses for reference the prior art and can be realized in the part that do not addressed in the present invention.
It should be noted that any equivalent way that those skilled in the art are made under the introduction of this specification, or Obvious variant should all be within the scope of the present invention.

Claims (9)

1. a kind of for handling the efficient autotrophic denitrification system of high ammonia-nitrogen wastewater comprising centerwell, reaction tank main body, sludge return Flow device, mixed liquor reflux unit, communication apparatus and aerator, it is characterised in that:
The reaction tank main body is four reaction tanks of two rows of two column, respectively the first reaction tank, the second reaction tank, third reaction Pond and the 4th reaction tank, wherein the first reaction tank and the 4th reaction tank for a row and are located at bottom, and the first reaction tank and second is instead Ying Chiwei mono- is arranged；
The centerwell is located at the center of four diagonal lines of reaction tank comprising denitrification pond, goes out distribution well Well and sedimentation basin, four be concentric circles pond body, and is followed successively by denitrification pond, distribution well, wet well, sedimentation basin from inside to outside；
The water inlet in the denitrification pond is connected with water inlet manifold road, and treatment sewage enters institute through the water inlet manifold road The bottom in denitrification pond is stated, the pond body top in the denitrification pond is provided with interception sieve；Treatment sewage is through the anti-nitre The interception sieve for changing pond pond body top enters the distribution well, is connected between the distribution well and each reaction tank, and be used for It intakes into each reaction tank, the water distribution bottom is provided with the first mud discharging mouth；The sedimentation basin is anti-for collecting four The water outlet of Ying Chi, and it is discharged into wet well through the sedimentation basin top, the precipitating bottom of pond portion is provided with the second mud discharging mouth；It is described The water outlet on wet well top be connected with total outlet pipe road, water outlet is discharged through the total outlet pipe road；In each reaction tank Water outlet be provided with interception sieve；
First reaction tank and the second reaction tank, the second reaction tank and third reaction tank, third reaction tank and the 4th reaction Between pond, the 4th reaction tank and the first reaction tank respectively by the first connecting line, the second connecting line, third connecting line and The connection of 4th connecting line；
The communication apparatus includes communicating valve, the communicating valve include the first communicating valve on the first connecting line, The second communicating valve on the second connecting line, the third connecting valve on third connecting line and be located at the 4th connecting tube 4th communicating valve of road；First is respectively arranged with close to first reaction tank of centerwell and the upper side of the 4th reaction tank Water inlet and the 4th water inlet are respectively arranged with the close to second reaction tank of centerwell and the side-lower of third reaction tank Two water inlets and third water inlet are distinguished by first water inlet, the second water inlet, third water inlet and the 4th water inlet It intakes into the first reaction tank, the second reaction tank, third reaction tank and the 4th reaction tank；
Agitating device is provided with inside the denitrification pond and inside each reaction tank；
The precipitating bottom of pond portion is provided with the first mud return line, the second mud return line, third mud return line, the 4th dirt Mud return pipe, first mud return line, the second mud return line, third mud return line, the 4th mud return line The other end each leads into first reaction tank, the second reaction tank, third reaction tank, the 4th reaction bottom of pond portion；The dirt Mud reflux unit, including the first sludge reflux pump, the second sludge reflux pump, third sludge reflux pump, the 4th sludge reflux pump and Distribution well reflux pump, first sludge reflux pump, the second sludge reflux pump, third sludge reflux pump, the 4th sludge reflux Pump be located at precipitating bottom of pond portion and respectively with first mud return line, the second mud return line, third mud return line, the The connection of four mud return lines, the distribution well reflux pump is arranged on the mud return line of distribution well lower part connection, described The other end of mud return line is passed through the denitrification pond；
The reflux of the sedimentation basin top connection is arranged in the mixed liquor reflux unit, including mixed liquor reflux pump Guan Shang, the other end of the return pipe are passed through the denitrification pond；
The aerator is distributed in each reaction tank, and has been added suspension in denitrification pond and each reaction tank and carried Body.
2. according to claim 1 a kind of for handling the efficient autotrophic denitrification system of high ammonia-nitrogen wastewater, it is characterised in that: First water inlet, the second water inlet, third water inlet and the 4th water inlet pass through respectively the first inlet pipeline, second into Water lines, third inlet pipeline and the 4th inlet pipeline are connect with the distribution well, and are set on first inlet pipeline It is equipped with the first inlet valve, the second inlet valve is set on the second inlet pipeline, setting third inlet valve on third inlet pipeline, the 4th 4th inlet valve is set on inlet pipeline；The interception sieve includes the first interception sieve, the second interception sieve, third interception Sieve and the 4th interception sieve, described first, which intercepts sieve, the second interception sieve, third, intercepts sieve, the 4th interception sieve It is located in the first reaction tank, the second reaction tank, third reaction tank and the 4th reaction tank.
3. according to claim 1 a kind of for handling the efficient autotrophic denitrification system of high ammonia-nitrogen wastewater, it is characterised in that: Aerator in each reaction tank is made of multiple groups boring aeration pipe and micropore aeration pipe.
4. according to claim 2 a kind of for handling the efficient autotrophic denitrification system of high ammonia-nitrogen wastewater, it is characterised in that: First reaction tank, the second reaction tank, third reaction tank, the 4th reaction tank water outlet pass through the first outlet pipeline, second respectively Outlet pipeline, third outlet pipeline and the 4th outlet pipeline are connect with the sedimentation basin, and are gone out in the first outlet pipeline, second Water lines, third outlet pipeline and the 4th outlet pipeline be correspondingly arranged on the first outlet valve, the second outlet valve, third outlet valve and 4th outlet valve.
5. according to claim 4 a kind of for handling the efficient autotrophic denitrification system of high ammonia-nitrogen wastewater, it is characterised in that: First outlet pipeline, the second outlet pipeline, third outlet pipeline, the 4th outlet pipeline pass through the first sludge buffer board, respectively Two sludge buffer boards, third sludge buffer board, the 4th sludge buffer board are connect with sedimentation basin, and the first sludge buffer board, second Sludge buffer board, third sludge buffer board, the 4th sludge buffer board are respectively positioned on sedimentation basin lower part.
6. it is according to claim 4 a kind of for handling the operation method of the efficient autotrophic denitrification system of high ammonia-nitrogen wastewater, It is characterized in that, it includes following three kinds of control models:
The first, parallel running mode:
First reaction tank, the second reaction tank, third reaction tank and the 4th reaction tank is coordination, and each reaction tank is only Vertical water inlet, independent water outlet, and to be discharged by controlling related valve and be pooled to sedimentation basin, sedimentation basin part effluent recycling is to anti- Nitrification tank, remaining water outlet are discharged through wet well by total outlet pipe road, open first to fourth sludge reflux pump for being located at sedimentation basin By sludge reflux to each reaction tank；
The second, bi serie A operational mode:
First reaction tank, the second reaction tank are one group, and the third reaction tank and the 4th reaction tank are one group, wait locate Reason sewage enters denitrification pond by the water inlet in denitrification pond, and the interception sieve through denitrification pond pond body top enters water distribution Well continuously enters the first reaction tank, the 4th reaction tank by the first water inlet, the 4th water inlet respectively, by controlling related valves Door makes water in the first reaction tank enter the second reaction tank, so that the water in the 4th reaction tank enters third reaction tank, second Reaction tank and the water outlet of the 4th reaction tank are finally pooled to sedimentation basin, sedimentation basin part effluent recycling to denitrification pond, remaining water outlet It is discharged through wet well by total outlet pipe road, opens and be located at first to fourth sludge reflux pump of sedimentation basin for sludge reflux to each anti- Ying Chi；
Third, bi serie B operational mode:
First reaction tank, the second reaction tank, third reaction tank are one group, first reaction tank, the 4th reaction tank It is one group, treatment sewage enters denitrification pond by the water inlet in denitrification pond, the interception sieve through denitrification pond pond body top Net enters distribution well, continuously enters the first reaction tank by the first water inlet, and make the first reaction by controlling related valve Water in pond respectively enters the second reaction tank, the 4th reaction tank, and the water in the second reaction tank enters third reaction tank, third reaction Pond, the water outlet of the 4th reaction tank are pooled to sedimentation basin, sedimentation basin part effluent recycling to denitrification pond, remaining water outlet through wet well by The discharge of total outlet pipe road opens first to fourth sludge reflux pump for being located at sedimentation basin for sludge reflux to each reaction tank.
7. it is according to claim 6 a kind of for handling the operation method of the efficient autotrophic denitrification system of high ammonia-nitrogen wastewater, It is characterized in that, the parallel running mode specific steps are as follows: treatment sewage enters anti-by the water inlet in denitrification pond Nitrification tank, after the interception sieve on denitrification pond pond body top enters distribution well respectively by the first inlet valve, the second inlet valve, Third inlet valve, the 4th inlet valve and the first water inlet, the second water inlet, third water inlet and the 4th water inlet continuously enter respectively Reaction tank, water outlet intercept sieve, the second interception sieve, third by first respectively and intercept sieve and the 4th and intercept sieve, then Be pooled to sedimentation basin by respective outlet valve, sedimentation basin part effluent recycling to denitrification pond, remaining water outlet through wet well by The discharge of total outlet pipe road opens first to fourth sludge reflux pump for being located at sedimentation basin for sludge reflux to each reaction tank.
8. it is according to claim 6 a kind of for handling the operation method of the efficient autotrophic denitrification system of high ammonia-nitrogen wastewater, It is characterized in that, the bi serie A operational mode specific steps are as follows: treatment sewage enters by the water inlet in denitrification pond Denitrification pond intercepts after sieve enters distribution well through denitrification pond pond body top respectively by the first inlet valve, the 4th inlet valve And first water inlet, the 4th water inlet continuously enter the first reaction tank, the 4th reaction tank, the water outlet of the first reaction tank is blocked by first It cuts sieve, the first communicating valve, the second interception sieve and enters the second reaction tank, be pooled to through the second interception sieve, the second outlet valve Sedimentation basin, sedimentation basin part effluent recycling to denitrification pond, remaining water outlet are discharged through wet well by outlet pipeline；4th reaction tank Water outlet intercepts sieve by the 4th interception sieve, third connecting valve, third and enters third reaction tank, and the water outlet of third reaction tank passes through Third is pooled to sedimentation basin, sedimentation basin part effluent recycling to denitrification pond, remaining water outlet warp after intercepting sieve, third outlet valve Wet well is discharged by total outlet pipe road, opens first to fourth sludge reflux pump for being located at sedimentation basin for sludge reflux to each reaction Pond.
9. it is according to claim 6 a kind of for handling the operation method of the efficient autotrophic denitrification system of high ammonia-nitrogen wastewater, It is characterized in that, the bi serie B operational mode specific steps are as follows: treatment sewage enters by the water inlet in denitrification pond Denitrification pond intercepts continuous by the first inlet valve, the first water inlet after sieve enters distribution well through denitrification pond pond body top Into the first reaction tank, the water outlet of the first reaction tank intercepts sieve, the first communicating valve, the second interception sieve by first and enters second Reaction tank, while the water outlet of the first reaction tank intercepts sieve, the 4th communicating valve, the 4th interception sieve by first and enters the 4th reaction Pond, the water outlet of the second reaction tank intercept sieve and enter third reaction tank, third by the second interception sieve, the second communicating valve, third Reaction tank water outlet intercepts sieve by third, third outlet valve is pooled to sedimentation basin, sedimentation basin part effluent recycling to denitrification Pond, remaining water outlet are discharged through wet well by total outlet pipe road, and the water outlet of the 4th reaction tank intercepts sieve, the 4th outlet valve by the 4th It is pooled to sedimentation basin, sedimentation basin part effluent recycling to denitrification pond, remaining water outlet is discharged by total outlet pipe road through wet well, is opened First to fourth sludge reflux pump positioned at sedimentation basin is opened by sludge reflux to each reaction tank.
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EP3255016A1 (en) * 2016-06-10 2017-12-13 FCC Aqualia, S.A. Method for starting up and controlling a biological process for ammonium removal at low ammonium concentrations and low temperature through the use of a two stage autotrophic nitrogen removal process

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Inventor after: Zhou Jiazhong

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Inventor after: Guan Yongjie

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