CN201538728U - Improved A2N denitrifying dephosphatation and deep denitrification device - Google Patents
Improved A2N denitrifying dephosphatation and deep denitrification device Download PDFInfo
- Publication number
- CN201538728U CN201538728U CN2009201074312U CN200920107431U CN201538728U CN 201538728 U CN201538728 U CN 201538728U CN 2009201074312 U CN2009201074312 U CN 2009201074312U CN 200920107431 U CN200920107431 U CN 200920107431U CN 201538728 U CN201538728 U CN 201538728U
- Authority
- CN
- China
- Prior art keywords
- pond
- tank
- links
- phosphorus
- combined type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model relates to an improved A2N denitrifying dephosphatation and deep denitrification device which belongs to the field of wastewater treatment. The device is provided with a compound aerobic tank between an anoxic tank and a final sedimentation tank, the compound aerobic tank can realize the synchronous aerobic phosphorus uptake and the biofilm nitrification, a cubic sponge filler is filled, and the adding ratio of the filler accounts for 20%-30% of the effective volume of a reactor; and the compound aerobic tank is provided with a gas pump, a gas flowmeter and an aeration tube. The device does not add any reaction area, adopts the compound aerobic tank taking the suspended sponge filler as a carrier of nitrifying bacteria for replacing a post-aeration reaction tank, controls the aeration rate, the temperature and other parameters for realizing the nitrification of ammonia nitrogen and the synchronous nitrification and denitrification. The device can ensure the realization of stable and high-efficient removal of nitrogen and phosphorus in outlet water quality without increasing the process flow and the running energy consumption.
Description
Technical field
The utility model relates to denitrification dephosphorization and deep denitrogenation device, is applicable to the advanced treatment of the city domestic sewage of nitrogenous, phosphorus, belongs to activated sludge process sewage denitrification and dephosphorization technical field.
Background technology
Denitrification dephosphorization denitrification is the biological sewage treatment new technology of quite being paid close attention in recent years, based on the double sludge denitrification dephosphorization and denitrification process of this theory exploitation, have great importance for the municipal effluent denitrogenation dephosphorizing even depth processing that improves the especially low C/N ratio of municipal effluent.
The two mud technologies of traditional double sludge denitrification dephosphorization denitrogenation also claim A
2N double sludge denitrification dephosphorization and denitrification process is provided with anaerobic pond, intermediate sedimentation pond, microbial film nitrification tank, anoxic pond, aeration tank, back and settling tank in turn.Two mud pipelines are arranged: be respectively by anaerobic pond to anoxic pond surmount the mud pipeline and by the return sludge line of final tank to anaerobic pond.Sewage at first enters anaerobic pond, and denitrifying phosphorus removing bacteria absorbs voltaile fatty acid in sewage at this in the active sludge, and stores in vivo with the form of PHA (poly-hydroxy fatty acid), discharges a large amount of phosphoric acid salt phosphorus simultaneously.The mud mixture of the anaerobic pond intermediate sedimentation pond of flowing through subsequently, mud, water sharp separation.Be rich in ammonia nitrogen and phosphatic supernatant liquor flows to the aerobic biologic membrane nitrification tank, there are two functions in the aerobic nitrification pond: the one, and the ammonia nitrogen in the sewage is by nitrated one-tenth nitrate nitrogen; The 2nd, organism remaining in the sewage is oxidized.The nitrification liquid that is rich in phosphoric acid salt phosphorus and nitric nitrogen of aerobic biologic membrane nitrification tank flows into anoxic pond.Sedimentary mud in the intermediate sedimentation pond has surmounted the aerobic biologic membrane nitrification tank and has directly entered anoxic pond.In anoxic pond, the DPB (denitrifying phosphorus removing bacteria) that surmounts in the mud is an electron donor with intravital PHA, with the nitric nitrogen in the nitrification liquid as electron acceptor(EA), the phosphoric acid salt phosphorus that excess absorbs in the water is stored in the poly-phosphorus of formation in the cell, simultaneously nitrate-nitrogen reduction is become nitrogen, thereby finish denitrification denitrogenation and the effect of excessive suction phosphorus.The mixed solution of anoxic pond enters the aeration tank, back, the main effect of back aeration tank is to absorb remaining phosphorus: in the anoxic pond, if polyP bacteria is incomplete to the absorption of phosphorus as first electron acceptor(EA) with nitric nitrogen, in rearmounted aeration tank, polyP bacteria absorbs surplus phosphorus fully as second electron acceptor(EA) with oxygen, simultaneously, the intravital PHA of polyP bacteria can access oxidation completely, thereby realizes the regeneration of self.Mixed solution in the back aeration tank enters final tank, carries out mud-water separation at settling tank, and supernatant liquor is as final treating water discharging, and precipitating sludge is back to anaerobic pond, discharges excess sludge simultaneously.A
2The N denitrifying phosphorus removal technique is two sludge systems, and the so-called pair of sludge system is that nitrifier is independent of polyP bacteria and separately exists in the fixed-film biological reactor.
A
2The two more conventional sewage treatment process of mud technology of N denitrification dephosphorization, possessed following superiority: the COD consumption is few.The consumption of the synthetic PHB of DPB when COD farthest is used for anaerobism and puts phosphorus, this part PHA is used for denitrification simultaneously and inhales the phosphorus effect by the denitrification phosphorus-collecting bacterium in anaerobic environment, by " carbon is dual-purpose ", the denitrogenation and the dephosphorization of system have been realized, so this system is fit to the lower sewage disposal of C/N; Inhale phosphorus and do to finish as electron acceptor(EA), can save oxygen-supplying amount, so the power consumption that drops into is few in order to nitric nitrogen; Technology is two sludge systems, nitrifier becomes microbial film set growth, this has created a stable living environment not only for the slower nitrifier of growth velocity, increased nitrifier biomass in the system, improved nitrated rate, also can reduce hydraulic detention time and reactor volume, nitration reaction no longer is the restrictive factor of technology operation; On the other hand, the denitrifying phosphorus removing bacteria suspension growth is in another system, both separation have solved the competition contradiction of polyP bacteria and nitrifier in the traditional technology, they can be grown in best separately environment, this is more conducive to the stable of dephosphorization, denitrification system and operation efficiently, and controllability also is greatly improved; The DPB sludge yield decreases, and reduces the sludge treatment expense.
But ammonia nitrogen concentration is too high in this technology final tank water outlet, is the bottleneck that this technology needs to be resolved hurrily.Owing to surmount and carry a certain amount of ammonia nitrogen in the mud secretly, but after anoxic pond, do not have again to be provided with and be specifically designed to the nitrated nitrification tank of ammonia nitrogen, therefore ammonia nitrogen is not effectively removed except being used for microorganism self growth, causes inevitably occurring in the settling tank water outlet situation that ammonia nitrogen exceeds standard.
The utility model content
The purpose of this utility model is exactly at traditional A
2The drawback of N denitrification dephosphorization denitrification technology provides a kind of and can realize denitrification dephosphorization, three mud device and methods of advanced nitrogen simultaneously as electron acceptor(EA) with nitric nitrogen.Utilize this apparatus and method, at original A
2In the N technology, do not add under the situation of any reaction zone, adopt suspension sponge filler to substitute aerated reaction pond, back as the combined biological film-activated sludge reaction pond of the carrier of nitrifier, parameters such as control aeration rate and temperature realize the nitrated and synchronous nitration and denitrification of ammonia nitrogen.This utility model does not increase technical process and operation energy consumption, has solved the fatal problem of traditional technology, has guaranteed to realize in the effluent quality stable, the removal efficiently of nitrogen, phosphorus.
The purpose of this utility model solves by the following technical programs: a kind of improvement A
2N denitrification dephosphorization and deep denitrogenation device are provided with anaerobic pond, intermediate sedimentation pond, microbial film nitrification tank, anoxic pond and final tank in turn, and anaerobic pond links to each other with intermediate sedimentation pond pipe core by rising pipe; The intermediate sedimentation pond links to each other with anoxic pond with the surmount mud pipeline of intermediate sedimentation pond to anoxic pond by sludge reflux pump; The intermediate sedimentation pond links to each other with microbial film nitrification tank head end by rising pipe; The microbial film nitrification tank links to each other with anoxic pond by rising pipe; Final tank links to each other with anaerobic pond with the returned sluge pipeline of final tank to anaerobic pond by sludge reflux pump;
It is characterized in that:
The combined type Aerobic Pond is set between anoxic pond and final tank, and this combined type Aerobic Pond realizes that synchronous aerobic suction phosphorus and microbial film are nitrated, fills cubes sponge filler, and the filler dosing ratio is 20%～30% of a reactor useful volume; This combined type Aerobic Pond is provided with air pump, gas meter and aeration tube; Anoxic pond links to each other with the combined type nitrification tank by rising pipe; The combined type nitrification tank links to each other with the final tank pipe core by rising pipe.
Utilize the A of described a kind of improvement
2The method that N denitrification dephosphorization and deep denitrogenation device are disposed of sewage is characterized in that, comprises the steps:
1) start-up system, carbon fiber filler and sponge cubes filler are joined microbial film nitrification tank and combined type Aerobic Pond respectively, filling ratio is respectively 20%～30% of useful volume, add active sludge with nitrifier, carry out biomembranous cultivation and domestication, after the successful biofilm nitrifying sludge is discharged; Denitrification dephosphorization mud is dosed anaerobic pond and anoxic pond, and sludge concentration is at 3000～4000mg/L;
2) raw waste water passes through sump pump, final tank bottom mud by sludge pump and return line, be pumped into anaerobic pond bottom water-in respectively, the recurrence rate of returned sluge is 40%～60% of a flooding velocity volume, under the effect of whipping appts, microorganism and sewage thorough mixing in the returned sluge, the NO in the returned sluge
X--N utilizes that organism carries out denitrification in the sewage, and denitrifying phosphorus removing bacteria utilizes in the sewage organism to carry out anaerobism to put phosphorus, and the hydraulic detention time of anaerobic pond is 3h, and anaerobic pond goes out water mixed liquid and links to each other with intermediate sedimentation pond pipe core;
3) mixed solution leaves standstill in the intermediate sedimentation pond and carries out mud-water separation, and bottom settlings mud links to each other with anoxic pond by surmounting the mud pipeline, and surmounting mud is 30～60% of flooding velocity volume, and supernatant liquor enters the microbial film nitrification tank by rising pipe;
4) the microbial film nitrification tank has been filled carbon fiber filler, and packing ratio is 20～30%, carries out oxygenation by air pump and aeration tube, by the microbial film on the filler with the NH in the supernatant liquor
4 +-N is oxidized to NO
x --N realizes the nitrated of ammonia nitrogen;
5) water outlet in the microbial film links to each other with the anoxic pond feed-water end, and anoxic pond is by whipping appts, make water outlet that the microbial film nitrification tank is rich in nitric nitrogen and phosphoric acid salt phosphorus with surmount the mud thorough mixing, carry out anoxic and inhale phosphorus, simultaneously NO
x --N is converted into N
2
6) go out water mixed liquid in the anoxic pond and enter combined type Aerobic Pond feed-water end, the combined type Aerobic Pond is filled cubes sponge filler, packing ratio 20～30%, air pump carries out aeration aerating by aeration tube to the combined type Aerobic Pond, microbial film on the filler is used for remaining ammonia nitrogen and partial organic substances in the oxidation mixed solution, remaining phosphorus in the active sludge carries out aerobic suction phosphorus simultaneously, make the sponge filler in nitrification tank, keep good fluidized state and the dissolved oxygen concentration of controlling in the nitrification tank by adjusting aeration rate, realize the abundant nitrated and synchronous nitration and denitrification of ammonia nitrogen in the mixed solution;
7) the combined type Aerobic Pond goes out water mixed liquid and links to each other with the final tank pipe core, in final tank, carry out mud-water separation, precipitating sludge is back to anaerobic pond by sludge reflux pump and return line, and supernatant liquor is discharged from rising pipe, by bottom sludge valve discharging excess sludge.
The combined type Aerobic Pond is the simultaneous reactor of active sludge and microbial film, require to realize being separated of microorganism in the body of same pond, be about to nitrifier and be bonded on the microbial film, do not participate in the circulation of mud, and the polyP bacteria suspension growth is in active sludge, and circulates in system.Therefore filler selection is the key that present method becomes the merits and demerits operation, the type of filler and decoration form should satisfy following condition: the material that (a) is easy to biofilm development: the filler of input must have that biology is easy to adhere to and the abundant material character of propagation, prevents that biofilm detachment from causing biomass to reduce and to influence ammonia nitrogen nitrated; Simultaneously can not cause biological bulk deposition yet, prevent that the active sludge of denitrification phosphorus-collecting bacterium is fewer and feweri, and microbial film situation more and more; (b) packing ratio.: the packing ratio of control filler is moderate, very little nitrifier be difficult to play a role, too many can cause mud to hold back.To sum up, the utility model adopts the cubes sea filler that suspends to make biomembranous carrier, and the cubes filler is the cubes of 10～12mm, and packing ratio is 20～30% of a useful volume.By the effect of aerating apparatus, filler is suspended state, in the mutual striking process, makes microbial film clocklike come off between the filler, has effectively prevented the utilization ratio of holding back and improved oxygen of mud.
The utility model device is compared with existing conventional apparatus, has the following advantages:
1) characteristics of the present utility model are exactly with traditional A
2Back aeration tank in the N process unit replaces with the combined type Aerobic Pond, utilizes microbial film oxidation residue ammonia nitrogen on the suspension sponge filler, efficiently solves the problem that the water outlet ammonia nitrogen exceeds standard in the traditional technology;
2) simultaneously, in the combined type Aerobic Pond, phosphoric residue hydrochlorate phosphorus carries out aerobic suction phosphorus in the active sludge, and the intravital PHA of DPB obtains complete oxidation, and what be beneficial to the anaerobism section fully puts phosphorus;
3) owing to can effectively remove ammonia nitrogen after the anoxic pond, just can be according to influent quality, as controlled variable, keep the middle nitric nitrogen of denitrification dephosphorization of anoxic pond and the balance of phosphoric acid salt phosphorus ratio with the flow that surmounts mud, feasible reaction can be carried out fully completely, guarantees the steady running of system;
4) effectively alleviate the invalid phosphorus of releasing of final tank.Device after the improvement has a certain amount of nitric nitrogen in the water outlet of combined type Aerobic Pond, forms anaerobic environment in settling tank, has effectively suppressed the invalid release of phosphorus;
5) various microorganisms can play a role by stability and high efficiency.Three cover sludge systems have been related in the improved device, the biofilm system that adheres to of the nitrifier in the microbial film nitrification tank wherein, be rich in the Sludge System of denitrifying phosphorus removing bacteria and the fluidized biomembrane system that the Nitromonas in the combined type Aerobic Pond adheres to, this makes various microorganisms can give full play to effect separately in stable adapt circumstance in optimum ambient growth separately;
6) Gai Liang A
2N denitrification dephosphorization and deep denitrogenation device itself have been inherited traditional A
2The characteristic of the dephosphorization aspect of N is promptly made electron acceptor(EA) with nitric nitrogen, carries out denitrifying phosphorus uptake, realizes " carbon is dual-purpose ", has solved denitrification and the dephosphorization race problem former to carbon, the advanced treatment of the denitrogenation dephosphorizing of the municipal effluent of suitable low C/N ratio.
Description of drawings
Fig. 1 is the A of improvement
2N denitrification dephosphorization and deep denitrogenation process device.
Among the figure: 1-raw water box, 2-anaerobic pond, 3-intermediate sedimentation pond, 4-microbial film nitrification tank, 5-anoxic pond, 6-combined type Aerobic Pond, 7-final tank, 8-rising pipe, 9-excess sludge discharge pipe, 10-cubes sponge filler, 11-surmounts the mud pipeline, 12-returned sluge pipeline, 13-air pump
Embodiment
Improvement A
2The concrete operating procedure of N denitrification dephosphorization and deep denitrogenation process device is:
1. anaerobic phosphorus release.Raw waste water enters anaerobic pond 2 by sump pump, under the effect of agitator, be back to anaerobic pond by returned sluge pipeline 12 and be rich in the active sludge thorough mixing of polyP bacteria with final tank 7, the organism that denitrifying phosphorus removing bacteria fully absorbs in the sewage is stored in vivo with the form of PHA, emit phosphoric acid salt phosphorus simultaneously, a spot of nitrate carries out denitrification in the returned sluge, sludge concentration remains on 3000～4000mg/L, hydraulic detention time 3h;
2. anaerobic pond 2 goes out water mixed liquid and enters intermediate sedimentation pond 3 and carry out mud-water separation, and wherein precipitating sludge enters anoxic pond by surmounting mud pipeline 11, and supernatant liquor enters microbial film nitrification tank 4 from outlet pipeline;
3. ammonia nitrogen is nitrated.Be rich in the phosphoric acid salt phosphorus that discharges in undressed ammonia nitrogen of former water and the anaerobic pond in the supernatant liquor in intermediate sedimentation pond, by air pump 13 aeration effects, microbial film in the microbial film nitrification tank is oxidized to nitric nitrogen with ammonia nitrogen, hydraulic detention time is 6.5h, temperature is 15～30 ℃ of room temperatures, and aeration rate is controlled at 0.8～1m
3/ h;
4. denitrifying phosphorus uptake.4 water outlets of microbial film nitrification tank enter anoxic pond 5, under the agitator effect with surmount mud and mix, denitrifying phosphorus removing bacteria in the returned sluge, utilizing nitric nitrogen in 4 water outlets of microbial film nitrification tank as electron acceptor(EA), carry out anoxic and inhale phosphorus, is nitrogen with nitrate-nitrogen reduction simultaneously, finish the denitrifying phosphorus uptake process, surmounting the mud recurrence rate is 30～50% of flooding velocity volume, keeps that sludge concentration is 3000～4000mg/L in the anoxic pond, and hydraulic detention time is 5h;
5. remain ammonia nitrogen oxidation and aerobic suction phosphorus.Anoxic pond 5 goes out water mixed liquid and enters combined type Aerobic Pond 6, the combined type Aerobic Pond is to be composited by active sludge and two sludge systems of microbial film, the one, be rich in the Sludge System of polyP bacteria, another is the biofilm system of assembling Nitromonas that is bonded to filler.Under the effect of aeration, polyP bacteria as electron acceptor(EA), carries out aerobic suction phosphorus with oxygen in the active sludge; Biofilm system will surmount a small amount of ammonia nitrogen of carrying secretly in the mud and carry out oxidation, be oxidized to nitric nitrogen and a small amount of nitrite nitrogen.Hydraulic detention time is 1.2h, and aeration rate is controlled at 0.2～0.6m
3/ h, temperature is a room temperature;
6. draining and mud reflux.Mixed solution enters final tank by final tank 7 pipe cores and carries out mud-water separation in the combined type Aerobic Pond 6, supernatant liquor is from rising pipe 8 dischargings, precipitating sludge is the spissated mud that is rich in polyP bacteria, be back to anaerobic pond 2 by return line 12, simultaneously from excess sludge discharge tube drainage excess sludge.
Embodiment:
With the real life sewage of certain university dependents' district discharging as experimental subjects, pH=6.5～7.8, COD=260～350mg/L, NH
4 +-N=39.6～58.5mg/L, PO
4 3+-P=4.5～6.3mg/L, this sewage are typical municipal effluents.Every day sampling analysis once, the analytical procedure that adopts in the test all is standard methods of State Environmental Protection Administration issue.Pilot system is made up of anaerobic pond 2, intermediate sedimentation pond 3, microbial film nitrification tank 4, anoxic pond 5, combined type Aerobic Pond 6 and final tank 7 as shown in FIG., is cylindrical reactor, and flooding velocity is 2L/h.Tradition A
2The ammonia nitrogen mean concns is 9.58mg/L in the N technology final outflow water, and total average nitrogen concentration is 14.74mg/L, and improvement A
2N technology final outflow water, ammonia nitrogen mean concns are 2.12mg/L, and total average nitrogen concentration is 10.30mg/L, and effluent quality reaches more than the one-level category-A standard in State Standard of the People's Republic of China's urban wastewater treatment firm pollutant emission standard.
Claims (1)
1. improve A for one kind
2N denitrification dephosphorization and deep denitrogenation device are provided with anaerobic pond, intermediate sedimentation pond, microbial film nitrification tank, anoxic pond and final tank in turn, and anaerobic pond links to each other with intermediate sedimentation pond pipe core by rising pipe; The intermediate sedimentation pond links to each other with anoxic pond with the surmount mud pipeline of intermediate sedimentation pond to anoxic pond by sludge reflux pump; The intermediate sedimentation pond links to each other with microbial film nitrification tank head end by rising pipe; The microbial film nitrification tank links to each other with anoxic pond by rising pipe; Final tank links to each other with anaerobic pond with the returned sluge pipeline of final tank to anaerobic pond by sludge reflux pump;
It is characterized in that:
The combined type Aerobic Pond is set between anoxic pond and final tank, and this combined type Aerobic Pond realizes that synchronous aerobic suction phosphorus and microbial film are nitrated, fills cubes sponge filler, and the filler dosing ratio is 20%～30% of a reactor useful volume; This combined type Aerobic Pond is provided with air pump, gas meter and aeration tube; Anoxic pond links to each other with the combined type nitrification tank by rising pipe; The combined type nitrification tank links to each other with the final tank pipe core by rising pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201074312U CN201538728U (en) | 2009-04-17 | 2009-04-17 | Improved A2N denitrifying dephosphatation and deep denitrification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201074312U CN201538728U (en) | 2009-04-17 | 2009-04-17 | Improved A2N denitrifying dephosphatation and deep denitrification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201538728U true CN201538728U (en) | 2010-08-04 |
Family
ID=42590180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201074312U Expired - Lifetime CN201538728U (en) | 2009-04-17 | 2009-04-17 | Improved A2N denitrifying dephosphatation and deep denitrification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201538728U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103739163A (en) * | 2013-12-30 | 2014-04-23 | 北京工业大学 | Device and method for improving A2NSBR denitrifying phosphorus removal technology |
| CN104585121A (en) * | 2014-12-19 | 2015-05-06 | 湖北省自动化研究所股份有限公司 | Ecological fish tank for driving water circulation and removing total nitrogen through aeration and method for breeding edible fish with ecological fish tank |
| CN105174643A (en) * | 2015-10-11 | 2015-12-23 | 北京工业大学 | Device and method for continuous flow nitrosation-denitrification nitrogen and phosphorus removal of low-C/P sewage |
-
2009
- 2009-04-17 CN CN2009201074312U patent/CN201538728U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103739163A (en) * | 2013-12-30 | 2014-04-23 | 北京工业大学 | Device and method for improving A2NSBR denitrifying phosphorus removal technology |
| CN104585121A (en) * | 2014-12-19 | 2015-05-06 | 湖北省自动化研究所股份有限公司 | Ecological fish tank for driving water circulation and removing total nitrogen through aeration and method for breeding edible fish with ecological fish tank |
| CN104585121B (en) * | 2014-12-19 | 2017-02-22 | 湖北省自动化研究所股份有限公司 | Ecological fish tank for driving water circulation and removing total nitrogen through aeration and method for breeding edible fish with ecological fish tank |
| CN105174643A (en) * | 2015-10-11 | 2015-12-23 | 北京工业大学 | Device and method for continuous flow nitrosation-denitrification nitrogen and phosphorus removal of low-C/P sewage |
| CN105174643B (en) * | 2015-10-11 | 2017-11-03 | 北京工业大学 | A kind of nitrosation denitrification nitrogen and phosphorus removal device and method of the low C/P sewage of continuous stream |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101538104B (en) | Improved A2N denitrifying dephosphatation and deep denitrification device and method | |
| CN103588352B (en) | Two-stage backflow simultaneous nitrogen and phosphorus removal device and technology for denitrification phosphorus removal, shortcut nitrification and anaerobic ammonia oxidation of municipal sewage | |
| CN105540846B (en) | The application method of low carbon source urban sewage improvement UCT autotrophic denitrification dephosphorization apparatus | |
| CN201756490U (en) | Continuous-flow sewage low-oxygen short-range denitrification treatment device | |
| CN103787498B (en) | Rapid starting method of low-temperature low C/N sewage improvement A2/O process | |
| CN103121754B (en) | A kind of denitrification dephosphorization technique | |
| CN110436704B (en) | Urban sewage treatment upgrading and reforming process based on anaerobic ammonia oxidation | |
| CN102964035B (en) | Device for autotrophic nitrogen removal of composite biological membrane and operation method | |
| CN107032489A (en) | Realize the method that the short distance Anammoxs of continuous stream AOA half couple endogenous denitrification | |
| CN103482820B (en) | AAO-biological contact oxidation strengthened nitrogen and phosphorus removal integrated device and method | |
| CN108862582A (en) | One kind being based on part Anammox biomembrane A2The method of the bis- sludge system denitrogenation dephosphorizings of/O-IFAS-MBR | |
| CN104445619B (en) | Waste water advanced denitrification dephosphorization technique and device | |
| CN104150716A (en) | Biology processing apparatus capable of processing sewage at low-temperature with low carbon-nitrogen-ratio in cold region and method for processing sewage at low-temperature with low carbon-nitrogen-ratio in cold region | |
| CN109264864A (en) | A kind of " main-auxiliary " activated sludge process coupling deodorization and intensified denitrification and dephosphorization | |
| CN114477420B (en) | Method and device for realizing deep denitrification of sewage by virtue of double coupling of continuous flow AOA (argon oxygen decarburization) short-cut nitrification and endogenous short-cut denitrification and anaerobic ammonia oxidation | |
| CN110104774A (en) | Continuous flow segmental influent, sludge and fermented sludge segment reflux part denitrification/Anammox Treating Municipal Sewage device | |
| CN105753155B (en) | A kind of optimization denitrogenation method of municipal sewage SNAD biomembrane process | |
| CN110002591A (en) | The apparatus and method of city domestic sewage short distance nitration coupling denitrification dephosphorization are realized under a kind of anoxic/aerobic alternation condition | |
| CN105198168B (en) | A2/O-MBR-biological contact oxidation pond dual-sludge high-efficiency denitrifying phosphorus removal device and method | |
| CN110980947B (en) | Denitrifying phosphorus removal sewage treatment device based on multistage anaerobism-MABR | |
| CN111646652A (en) | A high-efficient biological denitrification device for low carbon nitrogen ratio sewage | |
| CN110171904A (en) | Based on continuous flow AAO dephosphorization and part denitrogenation series hybrid fixed biofilm activated sludge autotrophic denitrification device and method | |
| CN205328793U (en) | Formula sewage treatment plant is used to MABR and MBR antithetical couplet | |
| CN110217887A (en) | A kind of the substep water inlet sequencing batch reactor and method of processing waste water of livestock poultry anaerobic digestion solution | |
| CN201538728U (en) | Improved A2N denitrifying dephosphatation and deep denitrification device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100804 |
|
| CX01 | Expiry of patent term |