CN104193093A - Sewage autotrophic nitrogen removal treatment method and device - Google Patents
Sewage autotrophic nitrogen removal treatment method and device Download PDFInfo
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- CN104193093A CN104193093A CN201410429260.0A CN201410429260A CN104193093A CN 104193093 A CN104193093 A CN 104193093A CN 201410429260 A CN201410429260 A CN 201410429260A CN 104193093 A CN104193093 A CN 104193093A
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Abstract
The invention discloses a sewage autotrophic nitrogen removal treatment method and device. The sewage is introduced into a pre-denitration reactor to remove dissolved oxygen; a part of the effluent is introduced into a shortcut nitrification reactor to convert NH4<+>-N into NO2<->-N; the other part of the effluent and the effluent from the shortcut nitrification reactor are simultaneously introduced into an anaerobic ammonia oxidation reactor to carry out anaerobic ammonia oxidation to remove nitrogen; a part of the effluent from the anaerobic ammonia oxidation reactor is discharged outside and the other part of the effluent from the anaerobic ammonia oxidation reactor flows back to the pre-denitration reactor to further remove nitrogen. According to the method and device disclosed by the invention, by combining the shortcut nitrification reactor and the anaerobic ammonia oxidation reactor, the urban sewage is treated, an efficient, low-consumption, low-cost and stable sewage treatment device for treating low-ammonia-nitrogen sewage is provided and the quality of the effluent is far superior to the requirements of national standard level A.
Description
Technical field
The present invention relates to a kind of sewage autotrophic denitrification treatment process and device.
Background technology
Along with the continuous expansion of economic fast development, Urbanization Construction, the aggravation of water environment pollution situation, quality of water environment worsens the orthobiosis that has a strong impact on people.Along with the raising day by day of urban drainage pipe network fraction of coverage, sewage collecting rate, improve effluent of municipal sewage plant water quality and become current urgent problem.Traditional omnidistance biological nitration/denitrification still be take as main for the removal of nitrogen in sewage in existing municipal sewage plant, has the shortcomings such as efficiency is low, energy and material consumption is high, surplus sludge volume is large; And along with the raising of people's living standard, in sewage, the ratio of C/N is more and more low, in sewage, can utilize carbon source to be difficult to meet the demand of biological denitrificaion, for obtaining satisfied outlet effect, must depend on additional carbon, the corresponding cost of sewage disposal that greatly improved.At present, along with going deep into nitrogen transformation approach understanding, it is theoretical that investigators have proposed some new biological denitrificaions, as short-cut nitrification and denitrification, Anammox etc., compare traditional biological denitrogenation, short distance nitration only needs ammonia nitrogen to be oxidizing to nitrite state, has saved demand to oxygen, has reduced energy consumption; And Anammox is autotrophic microorganism denitrification process, to compare with traditional biological denitrification process, it only needs the part ammonia nitrogen in sewage to be oxidizing to nitrite nitrogen, then take respectively ammonia nitrogen and nitrite nitrogen to complete the removal (NH of nitrogen as electron donor and acceptor
4 ++ 1.32NO
2 -→ 1.02N
2+ 0.26NO
3 -), this technology have do not need additional organic carbon source, sludge yield few, do not need aeration, save working cost, do not need the advantages such as acid-base neutralisation agent, non-secondary pollution.Therefore, at the beginning of short distance nitration-anaerobic ammoxidation technology self-discovery, just enjoy favor, along with the demand of sewage treatment area to efficient low-consume technique, this technology more and more receives people's concern.
The current main technique method that realizes short distance nitration-anaerobic ammoxidation denitrogenation has: CN103172175A discloses method and the device of a kind of synchronous short distance nitration and biological membrane type Anammox, and the method is by arranging synchronous short distance nitration and biological membrane type Anammox, reactor, settling tank; Sewage enters synchronous short distance nitration and biological membrane type anaerobic ammonia oxidation reactor, first adds short distance nitration mud in reactor, and controls temperature of reactor at 30～34 ℃, dissolved oxygen 0.9 ~ 1.4mg/L; When water outlet nitrite accumulation rate >70%, add Anammox sludge media, then reduce dissolved oxygen, making dissolved oxygen concentration is 0.5 ~ 0.8mg/L; Reactor water outlet enters settling tank, and water outlet after precipitation, realizes sewage water denitrification.The processing object ammonia nitrogen concentration of the method is 250 ~ 450mg/L, and in the method, nitrosifying realization is by the means of inoculation short distance nitration mud, then carries out Anammox again, and it processes rear water outlet ammonia nitrogen <50mg/L.
CN1927739A discloses a kind of short distance nitration-anaerobic ammoxidation sequencing batch biofilm denitrification operation mode and device, the growth that the restricted aeration mode that temperature by sewage in real-time control reaction vessel and high frequency aeration-anoxic replace suppresses NOB and denitrifying bacteria, has realized the quick startup of short distance nitration and Anammox; The method is mainly the symbiosis of setting up ammonia oxidizing bacteria and anaerobic ammonium oxidizing bacteria, by restricted aeration mode, realizes the removal of nitrogen in sewage.It is the high ammonia waste water of ammonia nitrogen concentration 215～498.5mg/L that this device is processed object, and after its processing, the ammonia nitrogen concentration in water outlet is 28mg/L, and the water outlet after processing still contains the ammonia nitrogen of higher concentration.
CN102557356A has announced a kind of half short distance nitration/Anammox municipal effluent denitrification dephosphorization technique and method, and it comprises former water tank, organic matter removal sbr reactor device, the first regulating tank, half short distance nitration sbr reactor device, the second regulating tank and the autotrophic denitrification UASB reactor of order series connection.For removing the organism in sewage, the method is specially provided with organic matter removal sbr reactor device at the front end of technique; In addition, the method is by controlling NH in half short distance nitration reactor
4 +-N and NO
2 -the ratio of-N provides required matrix for anaerobic ammonia oxidizing bacteria, for automatic control level, has relatively high expectations.
By above existing processing method, can find: current employing short distance nitration/anaerobic ammonia oxidation process carries out sewage water denitrification and mainly concentrates on high ammonia-nitrogen wastewater, for the sanitary sewage shortage research of low ratio of carbon to ammonium; And operation control process relative complex, actually operating difficulty are larger, are unfavorable for carrying out smoothly of Anammox reaction; In addition, for the nitric nitrogen in anaerobic ammonium oxidation vessel water outlet, do not take the measure of further processing yet.
Therefore, be badly in need of the efficient autotrophic denitrification technique of city domestic sewage and the device of a set of suitable low ratio of carbon to ammonium of research and development, for the consumption reduction of urban sewage treatment process, reduce discharging new thinking is provided.
Summary of the invention
The predicament, the effluent quality that improves sewage treatment process, reduction sewage disposal energy consumption and the processing cost that for solving existing urban sewage treatment technology, face, proposed a kind of sewage autotrophic denitrification treatment process and device.
The object of the present invention is to provide a kind of sewage autotrophic denitrification treatment unit.
Another object of the present invention is to provide a kind of sewage autotrophic denitrification treatment process.
The technical solution used in the present invention is:
A sewage autotrophic denitrification treatment unit, comprises pre-Benitration reactor, short distance nitration reactor, equalizing tank, anaerobic ammonia oxidation reactor; Described pre-Benitration reactor, short distance nitration reactor, equalizing tank, anaerobic ammonia oxidation reactor connect successively by water inlet main line, between described pre-Benitration reactor and equalizing tank, be provided with and the water outlet of pre-Benitration reactor can be imported to the water inlet branch road of equalizing tank, between described anaerobic ammonia oxidation reactor and pre-Benitration reactor, being provided with can be by the return line of the extremely pre-Benitration reactor of the effluent recycling of anaerobic ammonia oxidation reactor.
Further, above-mentioned pre-Benitration reactor is provided with water inlet pipe, return line and the first blow-down pipe.
Further, above-mentioned short distance nitration reactor is provided with pH Meter, temperature controller, stirring facility, DO determinator, blower fan and gas meter, aeration facility and the second blow-down pipe.
Further, above-mentioned anaerobic ammonia oxidation reactor is provided with the 3rd blow-down pipe, return line and rising pipe.
A sewage autotrophic denitrification treatment process, comprises the following steps:
1) pre-denitration is processed: the sewage (sewage total amount is designated as Q) after pre-treatment is introduced to pre-Benitration reactor, simultaneously by anaerobic ammonia oxidation reactor part effluent recycling to this pre-Benitration reactor, the two mixes, denitrifying bacteria in pre-Benitration reactor utilizes intrinsic carbon source in sewage to carry out denitrification removal to the nitric nitrogen in phegma, also can remove the dissolved oxygen carrying in sewage simultaneously;
2) short distance nitration is processed: the water outlet in above-mentioned pre-Benitration reactor is divided into two parts, and (sewage quantity is designated as q to first part's water outlet
1) introduce in short distance nitration reactor, short distance nitration reactor adopts intermittent aeration operation scheme, aeration phase dissolved oxygen DO is that 0.8～1.2mg/L, hydraulic detention time HRT are that 8～14h, sewage temperature are 28 ± 2 ℃, and the ammonia control in sewage, at Nitrification Stage, is about to NH
4 +-N is converted into NO
2 --N;
3) Anammox is processed: by the second section water outlet in above-mentioned pre-Benitration reactor, (sewage quantity is designated as q
2) and short distance nitration reactor in water outlet introduce in anaerobic ammonia oxidation reactor simultaneously, make the NH in pre-Benitration reactor water outlet
4 +nO in-N and the water outlet of short distance nitration reactor
2 --N, under the effect of anaerobic ammonia oxidizing bacteria, is converted into nitrogen, realizes the removal of nitrogen;
4) draining: the water outlet after anaerobic ammonia oxidation reactor is processed is arranged outward; Meanwhile, can, according to the requirement of the fluctuation of influent quality and effluent quality, part effluent recycling to pre-Benitration reactor further be denitrogenated.
Further, above-mentioned steps 3) described in pre-Benitration reactor in second section water outlet (sewage quantity is designated as q
2) and short distance nitration reactor in water outlet first introduce equalizing tank and mix after, then introduce anaerobic ammonia oxidation reactor and carry out Anammox reaction.
Further, above-mentioned sewage quantity q
1be 0.5 ~ 0.7Q, sewage quantity q
2be 0.3 ~ 0.5Q.
Further, the handled sewage quality index of above-mentioned sewage autotrophic denitrification treatment process is: CODcr is 150 ~ 250mg/L, ammonia nitrogen NH
4 +-N is 20 ~ 30mg/L, and total nitrogen TN is 25 ~ 40mg/L, and pH is 7.0 ~ 7.6.
The invention has the beneficial effects as follows:
1) Treating Municipal Sewage is combined in the present invention with Anammox technology by short distance nitration, for low ammonia nitrogen waste water, processes a set of efficient, low consumption, sewage treatment process are cheaply provided.
2) sewage autotrophic denitrification treatment process of the present invention and device, mainly using the low ammonia nitrogen waste waters such as municipal effluent as processing object, by the coupling to pre-denitration, short distance nitration, Anammox technology, autotrophic denitrification technology is applied among city domestic sewage processes, when improving effluent quality, reduce processing cost.The method, by pre-denitration district is set, has been eliminated carbon and the disadvantageous effect of dissolved oxygen to ammonia oxidation bacteria and anaerobic ammonia oxidizing bacteria in sewage; And the sewage backflow by after Anammox reaction, when intrinsic carbon source is carried out heterotrophism denitrogenation in making full use of sewage, has further improved system denitrogenation and scrubbing usefulness; In addition, the inventive method is only carried out short distance nitration to part of contaminated water, realizes when controlling flexibly, and the pond that has reduced short distance nitration reactor holds, reduced construction investment and running cost.
3) the present invention set up a pre-Benitration reactor before short distance nitration-anaerobic ammoxidation, and by the extremely pre-Benitration reactor of the part effluent recycling of anaerobic ammonia oxidation reactor, on the one hand, the dissolved oxygen that sewage after pre-treatment can be carried and carbon source are fallen at this reactor internal consumption, eliminate it and directly enter short distance nitration reactor and the disadvantageous effect of anaerobic ammonia oxidation reactor to ammonia oxidation bacteria and anaerobic ammonia oxidizing bacteria; On the other hand, in sewage after Anammox reaction, still contain part nitric nitrogen, the present invention is by the extremely pre-Benitration reactor of the part effluent recycling of anaerobic ammonia oxidation reactor, can make full use of the carbon source containing in raw waste water at this and carry out heterotrophism denitrogenation, further improve the denitrification efficiency of system; In addition, in pre-Benitration reactor, can utilize raw waste water in intrinsic carbon source carry out denitrification denitrogenation, the carbon source in sewage is consumed herein, eliminated the disadvantageous effect of carbon element to back segment anaerobic ammonia oxidizing bacteria in sewage.
4) the sewage segmentation after pre-denitration is entered respectively to short distance nitration reactor and anaerobic ammonia oxidation reactor, only the part ammonia nitrogen in sewage is carried out to short distance nitration, can adjust flexibly according to influent quality and running condition the water inlet allocation proportion of the two, for anaerobic ammonia oxidizing bacteria provides reliable, stable response matrix, reduced the treatment scale of short distance nitration reactor simultaneously, the corresponding pond of having reduced holds and aeration rate, has reduced construction investment, operation energy consumption and ton cost of water treatment.
5) the invention provides a whole set of for the process unit of low ratio of carbon to ammonium city domestic sewage autotrophic denitrification, comprise and realize each controlling factor of operation and control parameter, when realizing municipal effluent autotrophic denitrification, improved water outlet quality, after this art breading, effluent quality is far superior to the requirement of < < integrated wastewater discharge standard (GB8978-1996) > > one-level A standard.
6) the present invention adopts whole-process automatic control module to operate, and controls and simply should go, and for through engineering approaches, application has good operability.
7) technique of the present invention can be used for the newly-built and improvement project of biological carbon and phosphorous removal sewage work, can reduce the ton cost of water treatment of municipal wastewater treatment plant and process energy consumption (processed in units energy consumption and cost are more than 10%), and improving effluent of municipal sewage plant water quality.
Accompanying drawing explanation
Fig. 1 is sewage autotrophic denitrification process flow diagram of the present invention;
Fig. 2 is sewage autotrophic denitrification device schematic diagram of the present invention;
Description of reference numerals: pre-Benitration reactor 1, water inlet pipe 11, blow-down pipe 12, short distance nitration reactor 2, pipeline 21, pH Meter 22, temperature controller 23, stirring facility 24, DO determinator 25, aeration facility 26, blower fan and gas meter 27, blow-down pipe 28, equalizing tank 3, pipeline 31, pipeline 32, anaerobic ammonia oxidation reactor 4, pipeline 41, blow-down pipe 42, rising pipe 43, return line 44.
Embodiment
Below in conjunction with specific embodiment, the present invention is further illustrated, but be not limited to this.
embodiment 1 sewage autotrophic denitrification treatment unit
As shown in Figure 2, provide in the present invention a kind of municipal effluent autotrophic denitrification treatment unit, it comprises pre-Benitration reactor 1, short distance nitration reactor 2, equalizing tank 3, anaerobic ammonia oxidation reactor 4; Described pre-Benitration reactor 1, short distance nitration reactor 2, equalizing tank 3, anaerobic ammonia oxidation reactor 4 connect successively by water inlet main line, between described pre-Benitration reactor 1 and equalizing tank 3, be provided with and the water outlet of pre-Benitration reactor 1 can be imported to the water inlet branch road of equalizing tank 3, between described anaerobic ammonia oxidation reactor 4 and pre-Benitration reactor 1, being provided with can be by the return line of the extremely pre-Benitration reactor 1 of the effluent recycling of anaerobic ammonia oxidation reactor 4.
In addition, described pre-Benitration reactor 1 is provided with water inlet pipe 11, return line 44 and the first blow-down pipe 12, described short distance nitration reactor 2 is provided with pH Meter 22, temperature controller 23, stirs facility 24, DO determinator 25, aeration facility 26, blower fan and gas meter 27 and the second blow-down pipe 28, and described anaerobic ammonia oxidation reactor 4 is provided with the 3rd blow-down pipe 42, rising pipe 43 and return line 44.
The present invention is by arranging pre-Benitration reactor 1, short distance nitration reactor 2, equalizing tank 3 and anaerobic ammonia oxidation reactor 4, during operation, pretreated municipal effluent is entered to pre-Benitration reactor 1 through water inlet pipe 11, utilize the heterotrophic denitrifying Bacteria in pre-Benitration reactor 1 to remove the dissolved oxygen carrying in sewage; A sewage part in pre-Benitration reactor 1 31 pumps into equalizing tank 3 by the road, and another part 21 pumps into short distance nitration reactor 2 and carries out short distance nitration reaction by the road, makes the NH in sewage
4 +-N is converted into NO
2 -n; Sewage in short distance nitration reactor 2 32 pumps into equalizing tank 3 by the road, the sewage that pipeline 31 and 32 pumps in equalizing tank 3 is mixed and is stored, 41 pump into anaerobic ammonia oxidation reactor 4 by the road again, a liquid part in anaerobic ammonia oxidation reactor 4 is discharged through rising pipe 43, another part is back to pre-Benitration reactor 1 through return line 44, removes the nitrate in backflow.
As the preferred embodiment of the present invention, below pre-Benitration reactor 1, be provided with the first blow-down pipe 12.
As the preferred embodiment of the present invention, in short distance nitration reactor 2, be provided with pH Meter 22, temperature controller 23 and DO determinator 25, detect respectively and control pH value, temperature and DO in short distance nitration reactor 2; In short distance nitration reactor 2, be also provided with the aeration facility 26 and the second blow-down pipe 28 that stir facility 24, blower fan and gas meter 27 and be arranged on bottom, wherein, aeration facility 26 is connected with blower fan and gas meter 27.
As the preferred embodiment of the present invention, below anaerobic ammonia oxidation reactor 4, be provided with the 3rd blow-down pipe 42.
2 one kinds of sewage autotrophic denitrification treatment processs of embodiment
The sanitary sewage of getting Guangzhou City Sewage Plant carries out autotrophic denitrification processing of the present invention, and before processing, main water-quality guideline is as follows: CODcr=120mg/L, NH
4 +-N=30mg/L, TN=32mg/L, pH=7.2.In conjunction with Fig. 1 (schematic diagram of sewage autotrophic denitrification process flow) and Fig. 2 (sewage autotrophic denitrification device schematic diagram), treating processes is carried out to following explanation.
1) pre-denitration is processed: during operation, municipal effluent is entered to pre-Benitration reactor 1(sewage disposal total amount by water inlet pipe 11 after the pre-treatment of removing slag and be designated as Q), anaerobic ammonia oxidation reactor 4 part water outlets are introduced in this pre-Benitration reactor 1 through return line 44 simultaneously, the two mixes, denitrifying bacteria in pre-Benitration reactor 1 utilizes intrinsic carbon source in sewage to carry out denitrification removal to the nitric nitrogen in phegma, also can remove the dissolved oxygen carrying in sewage simultaneously;
2) short distance nitration is processed: the water outlet in above-mentioned pre-Benitration reactor 1 is divided into two parts, and (sewage quantity is designated as q to first part's water outlet
1=0.6Q) 21 introduce in short distance nitration reactors 2 by the road, short distance nitration reactor 2 adopts SBR(sequencing batch active sludges) pond type, intermittent aeration operation scheme: instant water coming-in, aeration 2.0 h, stir 1.0h; Aeration and stirring alternate run 4 times, then standing 1.0h, water outlet; The present embodiment cycle of operation is 13h, and aeration phase dissolved oxygen is 1.0mg/L; This by the ammonia control in sewage at Nitrification Stage, be about to NH
4 +-N is converted into NO
2 --N;
Short distance nitration reactor 2 is above-mentioned in service, by stirring facility 24 and aeration facility 26, realize intermittent aeration, the DO monitoring in short distance nitration reactor 2 in real time by DO determinator 25 changes, by blower fan and gas meter 27, control aeration rate, by pH Meter 22 variation of monitoring pH value in real time; By temperature controller 23, monitoring in real time and control sewage temperature is 28 ± 2 ℃; By the second blow-down pipe 28, realize regular spoil disposal and the running maintenance of short distance nitration reactor 2.
3) Anammox is processed: due to the employing of short distance nitration reactor is SBR technique, water outlet at intermittence operational mode, for continuous water inlet being provided to follow-up anaerobic ammonia oxidation reactor 4, the water outlet of short distance nitration reactor 2 32 is introduced to equalizing tank 3 by the road, and by the second section water outlet of pre-Benitration reactor 1, (sewage quantity is designated as q simultaneously
2=0.4Q) 31 introduce equalizing tank 3 by the road, the two mixes and interim storage in equalizing tank, then introduces continuously in anaerobic ammonia oxidation reactor 4, makes the NH in pre-Benitration reactor 1 water outlet
4 +nO in-N and 2 water outlets of short distance nitration reactor
2-N, under the effect of anaerobic ammonia oxidizing bacteria, is converted into nitrogen, realizes the removal of nitrogen;
3 pairs of short distance nitration reactor 2 water outlets of equalizing tank and pre-Benitration reactor 1 water outlet mix, thereby provide more suitable growth matrix for the anaerobic ammonia oxidizing bacteria in follow-up anaerobic ammonia oxidation reactor 4.
Anaerobic ammonia oxidation reactor 4 adopts up-flow biological filter, and built-in particle diameter is the volcanic filling material of 2.0 ~ 5.5 mm, and depth of packing is 1.5 m, bottom arranges 10cm thickness gravel supporting layer, filtering velocity 1.0m/h, outside, filter tank is tied with heating and thermal insulation lucifuge film, and controlling filter tank internal temperature is 28 ± 2 ℃; On volcanic filling material, apposition growth has anaerobic ammonium oxidizing bacteria, makes into the NH in water
4 +-N and NO
2 --N is converted into N
2discharge system;
4) draining: because Anammox reaction can produce a small amount of nitrate, for further reducing the total TN concentration of water outlet, improving system denitrification efficiency, the part water outlet (quantity of reflux R=0.5Q) of anaerobic ammonia oxidation reactor is back to pre-Benitration reactor 1 through return line 44, and another part water outlet is through the outer row of rising pipe 43.
According to above-mentioned concrete implementation step, sewage autotrophic denitrification treatment system after the domestication of 3 months and cultivating, NH in 2 water outlets of SBR short distance nitration reactor
4 +-N, NO
2 --N, NO
3 -the mean concns of-N is respectively 0.85mg/L, 27.0mg/L, 3.5mg/L; NH in anaerobic ammonia oxidation reactor 4 water outlets
4 +-N, NO
2 --N, NO
3 -the mean concns of-N is 1.5mg/L, 0.15mg/L, 2.6mg/L, water outlet TN is lower than 5.0mg/L, and effluent quality is far superior to < < integrated wastewater discharge standard (GB8978-1996) > > one-level A standard-required.
Above-described embodiment is only specific embodiments of the invention, is not used for limiting practical range of the present invention; Be that all equalizations of doing according to content of the present invention change and modify, all by the claims in the present invention scope required for protection, contained.
Claims (8)
1. a sewage autotrophic denitrification treatment unit, is characterized in that: comprise pre-Benitration reactor, short distance nitration reactor, equalizing tank, anaerobic ammonia oxidation reactor; Described pre-Benitration reactor, short distance nitration reactor, equalizing tank, anaerobic ammonia oxidation reactor connect successively by water inlet main line, between described pre-Benitration reactor and equalizing tank, be provided with and the water outlet of pre-Benitration reactor can be imported to the water inlet branch road of equalizing tank, between described anaerobic ammonia oxidation reactor and pre-Benitration reactor, being provided with can be by the return line of the extremely pre-Benitration reactor of the effluent recycling of anaerobic ammonia oxidation reactor.
2. sewage autotrophic denitrification treatment unit according to claim 1, is characterized in that: described pre-Benitration reactor is provided with water inlet pipe, return line and the first blow-down pipe.
3. sewage autotrophic denitrification treatment unit according to claim 1, is characterized in that: described short distance nitration reactor is provided with pH Meter, temperature controller, stirring facility, DO determinator, blower fan and gas meter, aeration facility and the second blow-down pipe.
4. sewage autotrophic denitrification treatment unit according to claim 1, is characterized in that: described anaerobic ammonia oxidation reactor is provided with the 3rd blow-down pipe, return line and rising pipe.
5. a sewage autotrophic denitrification treatment process, is characterized in that: comprise the following steps:
1) pre-denitration is processed: the sewage (sewage total amount is designated as Q) after pre-treatment is introduced to pre-Benitration reactor, simultaneously by anaerobic ammonia oxidation reactor part effluent recycling to this pre-Benitration reactor, the two mixes, denitrifying bacteria in pre-Benitration reactor utilizes intrinsic carbon source in sewage to carry out denitrification removal to the nitric nitrogen in phegma, also can remove the dissolved oxygen carrying in sewage simultaneously;
2) short distance nitration is processed: the water outlet in above-mentioned pre-Benitration reactor is divided into two parts, and (sewage quantity is designated as q to first part's water outlet
1) introduce in short distance nitration reactor, short distance nitration reactor adopts intermittent aeration operation scheme, aeration phase dissolved oxygen DO is that 0.8～1.2mg/L, hydraulic detention time HRT are that 8～14h, sewage temperature are 28 ± 2 ℃, and the ammonia control in sewage, at Nitrification Stage, is about to NH
4 +-N is converted into NO
2 --N;
3) Anammox is processed: by the second section water outlet in above-mentioned pre-Benitration reactor, (sewage quantity is designated as q
2) and short distance nitration reactor in water outlet introduce in anaerobic ammonia oxidation reactor simultaneously, make the NH in pre-Benitration reactor water outlet
4 +nO in-N and the water outlet of short distance nitration reactor
2 --N, under the effect of anaerobic ammonia oxidizing bacteria, is converted into nitrogen, realizes the removal of nitrogen;
4) draining: the water outlet after anaerobic ammonia oxidation reactor is processed is arranged outward; Meanwhile, can, according to the requirement of the fluctuation of influent quality and effluent quality, part effluent recycling to pre-Benitration reactor further be denitrogenated.
6. a kind of sewage autotrophic denitrification treatment process according to claim 5, is characterized in that: (sewage quantity is designated as q to the second section water outlet in the pre-Benitration reactor described in step 3)
2) and short distance nitration reactor in water outlet first introduce equalizing tank and mix after, then introduce anaerobic ammonia oxidation reactor and carry out Anammox reaction.
7. according to a kind of sewage autotrophic denitrification treatment process described in claim 5 or 6, it is characterized in that: sewage quantity q
1be 0.5 ~ 0.7Q, sewage quantity q
2be 0.3 ~ 0.5Q.
8. a kind of sewage autotrophic denitrification treatment process according to claim 5, is characterized in that: handled sewage quality index is: CODcr is 150 ~ 250mg/L, ammonia nitrogen NH
4 +-N is 20 ~ 30mg/L, and total nitrogen TN is 25 ~ 40mg/L, and pH is 7.0 ~ 7.6.
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| CN105540841A (en) * | 2015-12-15 | 2016-05-04 | 华东师范大学 | Method and equipment for aerobic/anaerobic biofilter biological denitrogenation |
| CN105668794A (en) * | 2016-04-17 | 2016-06-15 | 北京工业大学 | A/O bio-membrane denitrifying device and method for treating low-C/N sewage |
| CN107487841A (en) * | 2017-09-18 | 2017-12-19 | 安徽华骐环保科技股份有限公司 | A kind of denitrification integrates coupling dephosphorization and the waste water treatment process of Anammox |
| CN107840444A (en) * | 2017-12-11 | 2018-03-27 | 中国恩菲工程技术有限公司 | A kind of processing unit of garbage leachate |
| CN107879471A (en) * | 2017-11-09 | 2018-04-06 | 北京建筑大学 | A kind of new Full Autotrophic Ammonium Removal Process and device |
| CN108439596A (en) * | 2018-04-08 | 2018-08-24 | 福建省环境科学研究院（福建省排污权储备和管理技术中心） | A kind of method of one-part form semi-hitrosation-Anammox-denitrification coupling technique processing town domestic sewage |
| CN108715481A (en) * | 2018-05-14 | 2018-10-30 | 太原理工大学 | A kind of ASBR-SBR-ASBR association responses device |
| CN109665662A (en) * | 2017-10-13 | 2019-04-23 | 温州大学 | A kind of heterotrophism short-cut nitrification technology and its system matching Anammox |
| CN110294575A (en) * | 2019-07-26 | 2019-10-01 | 中国恩菲工程技术有限公司 | The processing unit of garbage leachate |
| CN110745941A (en) * | 2019-09-27 | 2020-02-04 | 中车环境科技有限公司 | Deep denitrification method for sewage |
| CN112979099A (en) * | 2021-04-09 | 2021-06-18 | 山东大学 | Process and device for synchronously recovering carbon and phosphorus in sewage by coupling autotrophic nitrogen removal |
| CN115057534A (en) * | 2022-07-27 | 2022-09-16 | 中国市政工程华北设计研究总院有限公司 | Low-carbon sewage nitrogen and phosphorus removal system and process |
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| CN108715481B (en) * | 2018-05-14 | 2021-04-27 | 太原理工大学 | ASBR-SBR-ASBR combined reaction device |
| CN110294575A (en) * | 2019-07-26 | 2019-10-01 | 中国恩菲工程技术有限公司 | The processing unit of garbage leachate |
| CN110745941A (en) * | 2019-09-27 | 2020-02-04 | 中车环境科技有限公司 | Deep denitrification method for sewage |
| CN112979099A (en) * | 2021-04-09 | 2021-06-18 | 山东大学 | Process and device for synchronously recovering carbon and phosphorus in sewage by coupling autotrophic nitrogen removal |
| CN115057534A (en) * | 2022-07-27 | 2022-09-16 | 中国市政工程华北设计研究总院有限公司 | Low-carbon sewage nitrogen and phosphorus removal system and process |
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