CN102267783A - Dephosphorizing and denitrifying method and system for sewage - Google Patents
Dephosphorizing and denitrifying method and system for sewage Download PDFInfo
- Publication number
- CN102267783A CN102267783A CN 201110187171 CN201110187171A CN102267783A CN 102267783 A CN102267783 A CN 102267783A CN 201110187171 CN201110187171 CN 201110187171 CN 201110187171 A CN201110187171 A CN 201110187171A CN 102267783 A CN102267783 A CN 102267783A
- Authority
- CN
- China
- Prior art keywords
- biological
- sewage
- pond
- unit
- water
- 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.)
- Pending
Links
Images
Abstract
The invention discloses a dephosphorizing and denitrifying method and system for sewage, belonging to the field of treatment of sewage. The method comprises the following steps of: pretreatment: making sewage enter a pretreatment unit for pretreating, removing large-particle suspended solids from the sewage, adjusting the sewage from which the suspended solids are removed; biological dephosphorizing treatment: making the pretreated effluent enter a biological dephosphorizing unit for dephosphorizing and removing organic matters; and biological autotrophic denitrifying treatment: making the biologically dephosphorized effluent enter a biological autotrophic denitrifying unit, and removing nitrogen from the sewage under the action of the autotrophic metabolism of anaerobic ammonium oxidizing bacteria of the biological autotrophic denitrifying unit under oxygen-deficient and organic carbon source independent condition, wherein effluent produced after denitrification by using the biological autotrophic denitrifying unit is taken as recycled water for dephosphorizing and denitrifying. The method has the advantages of short process flow, good dephosphorizing and denitrifying effects and low cost.
Description
Technical field
The present invention relates to sewage treatment area, particularly relate to a kind of sewage dephosphorizing and denitrifying method and system.
Background technology
Universally recognized in the world comparatively economic sewage dephosphorization technology is anaerobic phosphorus release/aerobic suction phosphorus biological phosphate-eliminating technology.This technology can reach deep phosphorous removal and remove organic purpose simultaneously under the condition that does not increase investment of traditional activated sludge process sewage treatment facility and working cost, has advantages such as reactor volume is little, phosphor-removing effect is good.But the same with traditional activated sludge process, problems such as sludge bulking still take place easily, this can cause second pond sludge settling deleterious, water outlet SS concentration to increase, even the phenomenon of the dephosphorization system that can take place seriously to cause because of sludge loss collapse.
At present, the old road of developed country is still continued to use in the production of China's reuse water, promptly on the basis of sewage disposal secondary effluent, simple series connection advanced nitrogen (nitration denitrification) dephosphorization process, caused existing regeneration effluent to be handled existing that technical process is long, the unit collocation is unreasonable, problems such as investment and working cost height, make that the cost value of reuse water is higher, make reuse water compare the advantage economically that lost with tap water, this is the bottleneck of restriction sewage disposal and resource utilization.And in the biological dephosphorize denitrification system, dephosphorization bacterial and denitrifier exist contradiction and the competition that is difficult to be in harmonious proportion biologically at present, mainly show as to the different of sludge loading, mud demand in age with to the contention of carbon source.When phosphor-removing effect was good, denitrification effect was then relatively poor, and vice versa, and this just makes the dephosphorization denitrogenation system of simple series combination (as A
2O and extension process thereof) be difficult to obtain simultaneously satisfied dephosphorization and denitrification effect.Therefore, how to realize to the pollutant removal that sewage carries out efficient economy it being that regeneration effluent is handled and is badly in need of the subject matter that solves.
Summary of the invention
Based on above-mentioned existing in prior technology problem, embodiment of the present invention provides a kind of sewage dephosphorizing and denitrifying method and system, solve that technical process in the existing regeneration effluent treatment process technology is long, the unit collocation is unreasonable, problems such as investment and working cost height, when avoiding utilizing biological phosphate-eliminating and denitrogenation, conflicting and the competition of dephosphorization bacterial and denitrifier, be implemented in and guarantee that stable effluent quality reaches under the prerequisite of reclaimed water reuse standard, accomplishes to save energy and reduce the cost.
The objective of the invention is to be achieved through the following technical solutions:
Embodiment of the present invention provides a kind of sewage dephosphorizing and denitrifying method, and this method may further comprise the steps:
Pre-treatment: make sewage enter pretreatment unit and carry out pre-treatment, remove macrobead suspended solid in the sewage, and the sewage of removing suspended solid is regulated;
Biological phosphate-eliminating is handled: above-mentioned pretreated water outlet is entered carry out biological phosphate-eliminating in the biological phosphate-eliminating unit and remove organism;
Biological autotrophic denitrification is handled: make the water outlet after above-mentioned biological phosphate-eliminating is handled enter biological autotrophic denitrification unit, in anoxic and need not under the condition of organic carbon source, autotrophic metabolism by the unitary anaerobic ammonia oxidizing bacteria of biological autotrophic denitrification is removed the nitrogen in the sewage, and water outlet after the denitrogenation is finished as the reuse water of dephosphorization denitrogenation in biological autotrophic denitrification unit.
Embodiment of the present invention provides a kind of sewage water dephosphorization denitrification system, and this system comprises:
The pretreatment unit of Lian Jieing, biological phosphate-eliminating unit and biological autotrophic denitrification unit successively, wherein, pretreatment unit is provided with the inlet of introducing sewage, and biological autotrophic denitrification unit is provided with the reuse water outlet.
Technical scheme of the present invention is compared with existing sewage disposal regeneration and treatment technique method, and beneficial effect is: (1) has fundamentally solved inherent contradiction and competition between dephosphorization bacterial and the denitrifier.Activated sludge concentration height in the biological phosphate-eliminating treatment step can significantly improve the microbe population of disposing of sewage, thereby has significantly strengthened the biological treatment ability, and can save floor space and initial cost expense; Be difficult to a stable difficult problem that realizes to carry out the Anammox denitrification reaction in the ammonia-nitrogen sewage and solved in the biological autotrophic denitrification treatment step because of short distance nitration hangs down at normal temperature, shortened the hydraulic detention time of sewage water denitrification greatly, reactor volume and initial cost can be saved more than 50%, and the denitrogenation sludge yield can reduce more than 90%, and running maintenance is comparatively convenient; (2) used treatment facility construction cost is than traditional A
2The regeneration effluent system of the biochemical deep purifying of O and relevant series methods thereof saves more than 25%, and working cost is saved more than 20%, and the reuse water cost reduces more than 20%; (3) its technical process is succinct, and dephosphorization and denitrification effect is remarkable, and effluent quality is better than urban wastewater treatment firm comprehensive discharge new standard (GB18918-2002) one-level A water quality standard, satisfies the requirement that sewage treatment facility is carried mark transformation and recycling sewage generated by making; (4) treatment effect and economic performance have all reached the leading level in the world.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
The sewage dephosphorizing and denitrifying method schema that Fig. 1 provides for the embodiment of the invention;
The sewage water dephosphorization denitrification system schematic that Fig. 2 provides for the embodiment of the invention.
Embodiment
The invention will be further described below in conjunction with specific embodiment.
Embodiment
Below in conjunction with specific embodiment the technical scheme among the present invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on embodiments of the invention, those of ordinary skills belong to protection scope of the present invention not making the every other embodiment that is obtained under the creative work prerequisite.
Below the embodiment of the invention is described in further detail.
The embodiment of the invention provides a kind of sewage dephosphorizing and denitrifying method, with sanitary sewage is main process object, be a kind of the biological autotrophic denitrification of anaerobic-aerobic-film biological phosphate-eliminating unit and Anammox unit to be carried out Combinatorial Optimization, the biological autotrophic denitrification regeneration effluent of the anaerobic-aerobic film biological phosphate-eliminating that proposes+Anammox New Process for Treatment, as shown in Figure 1, this method may further comprise the steps:
Pre-treatment: make sewage enter pretreatment unit and carry out pre-treatment, remove macrobead suspended solid in the sewage, and the sewage of removing suspended solid is regulated;
The pretreatment unit that adopts in the above-mentioned pre-treatment step constitutes by connecting grid, settling pit, settling tank and equalizing tank successively, and the inlet of grid is introduced the inlet of sewage as pretreatment unit, the outlet of equalizing tank as pre-treatment after the outlet of sewage.
Biological phosphate-eliminating is handled: above-mentioned pretreated water outlet is entered carry out biological phosphate-eliminating in the biological phosphate-eliminating unit and remove organism; The unitary sludge concentration of biological phosphate-eliminating is about 5000～8000mg/L, and dissolved oxygen concentration is about 2～3mg/L, and hydraulic detention time is about 3～6 hours;
The biological phosphate-eliminating unit that adopts in the above-mentioned biological phosphate-eliminating treatment step is anaerobic-aerobic-membrane biological reaction pond, this anaerobic-aerobic-membrane biological reaction pond is formed by connecting by anaerobic pond and Aerobic Pond, be provided with the ultra-filtration membrane device in the Aerobic Pond, be provided with return-flow system between Aerobic Pond and the anaerobic pond, return-flow system constitutes by reflux pump is set on the return line.
During above-mentioned biological phosphate-eliminating was handled, sewage entered in the unitary anaerobic pond of biological phosphate-eliminating, and polyP bacteria absorbs organic substrates and discharges phosphorus under anaerobic state; Sewage is in the unitary Aerobic Pond of biological phosphate-eliminating, polyP bacteria absorbs a large amount of phosphoric acid salt in the sewage under good oxygen condition, phosphoric acid salt is enriched in the active sludge, and realize the removal of phosphor in sewage nutritive salt by the discharging excess sludge, simultaneously, the part mud in the unitary Aerobic Pond of biological phosphate-eliminating is back to anaerobic pond by return-flow system; In the ultra-filtration membrane device that is provided with in Aerobic Pond, the suction function by suction pump makes the muddy water in the Biological Phosphorus Removal System obtain high efficiency separation, produces the lower water outlet of SS concentration, and the nitrogen in the water outlet mainly exists with the form of ammonia nitrogen.
Biological autotrophic denitrification is handled: make the water outlet after above-mentioned biological phosphate-eliminating is handled enter biological autotrophic denitrification unit, in anoxic and need not under the condition of organic carbon source, autotrophic metabolism by the unitary anaerobic ammonia oxidizing bacteria of biological autotrophic denitrification is removed the nitrogen in the sewage, and water outlet after the denitrogenation is finished as the reuse water of dephosphorization denitrogenation in biological autotrophic denitrification unit.
The biological autotrophic denitrification unit that adopts in the above-mentioned biological autotrophic denitrification treatment step is the Anammox biological filter.The filtering velocity of Anammox biological filter (being biological autotrophic denitrification unit) is about 0.5～2m/h, the filtrate height is about 1.5～3m, backwashing period is about 3～6 months, add nitrite in the water inlet of Anammox biological filter, the mol ratio of ammonia nitrogen is about 1.3: 1 in adding nitrite nitrogen and intaking.
During above-mentioned biological autotrophic denitrification was handled, the unitary water outlet of biological phosphate-eliminating was introduced in the Anammox biological filter, with the NH in the sewage
4 +-N and NO
2-N is converted into nitrogen simultaneously, finishes water outlet behind the biological autotrophic denitrification.Wherein, Anammox biological filter in the biological autotrophic denitrification treatment step is made up of pond body, filtrate, water-distributing device and water-freeing arrangement, be shaped as square, rectangle or circle, water-distributing device be arranged on pond body filtrate above or below, water-freeing arrangement is arranged on Chi Tishang.Sewage through the even spreading of water-distributing device on filtrate, (or from top to bottom) filtrate of flowing through from top to bottom, under anoxia condition, anaerobic ammonia oxidizing bacteria is converted into nitrogen simultaneously with ammonia nitrogen in the sewage and nitrite nitrogen, thereby realize the biological autotrophic denitrification of sewage, sewage is further purified.The filtrate of Anammox biological filter can be inorganic materials such as sand, pottery, gac, can be organic materialss such as plastics, fiber, resin also, is shaped as granular, waved plate, honeycombed etc.Can select a kind of filtrate, can adopt with a kind of density and evenly arrange or employing different densities layout, also can be multiple filtrate layered arrangement.
The embodiment of the invention also provides a kind of sewage water dephosphorization denitrification system, can be used for sanitary sewage is handled, and removes phosphorus and nitrogen in the decontaminated water, and as shown in Figure 2, this system comprises:
The pretreatment unit of Lian Jieing, biological phosphate-eliminating unit and biological autotrophic denitrification unit successively, wherein, pretreatment unit is provided with the inlet of introducing sewage, and biological autotrophic denitrification unit is provided with the reuse water outlet.
The pretreatment unit of said system constitutes by connecting grid, settling pit, settling tank and equalizing tank successively, and the inlet of grid is introduced the inlet of sewage as pretreatment unit, the outlet of equalizing tank as pre-treatment after the outlet of sewage.
The biological phosphate-eliminating unit of said system is anaerobic-aerobic-membrane biological reaction pond, this anaerobic-aerobic-membrane biological reaction pond is formed by connecting by anaerobic pond and Aerobic Pond, be provided with the ultra-filtration membrane device in the Aerobic Pond, be provided with return-flow system between Aerobic Pond and the anaerobic pond, return-flow system constitutes by reflux pump is set on the return line.The anaerobic-aerobic of this structure-membrane biological reaction pond replaces second pond with the ultra-filtration membrane device, can realize the mud-water separation in the aerobic reaction pond, guarantees the effect of follow-up biological denitrogenation processing.
The biological autotrophic denitrification unit of said system adopts the Anammox biological filter, and the Anammox biological filter is made up of pond body, filtrate, water-distributing device and water-freeing arrangement; Wherein, the pond body is square, rectangle or circle; Filtrate is evenly arranged in the body of pond, and water-distributing device is arranged on filtrate top or filtrate below, and water-freeing arrangement is arranged on Chi Tishang.Filtrate can be inorganic materials such as sand, pottery, gac, also can be organic materialss such as plastics, fiber, resin, and that filtrate is shaped as is granular, waved plate, honeycombed etc.Can select a kind of filtrate, can adopt with a kind of density and evenly arrange or employing different densities layout, also can be multiple filtrate layered arrangement.
Below in conjunction with the detailed process of above-mentioned sewage water dephosphorization denitrification system, aforesaid method is described further sewage water dephosphorization denitrification:
Handled sewage quality is as follows: water temperature=15～25 ℃, COD=200～500mg/L, BOD
5=100～250mg/L, SS≤200mg/L, NH
4 +-N=35～75mg/L, NO
2 -N＜0.25mg/L, NO
3 -N＜1.5mg/L, TP=3.5～8.0mg/L, pH=7.0～8.5.
Concrete processing is as follows:
(1) pre-treatment: sewage is introduced in grid, settling pit and the settling tank of pretreatment unit, removed bigger granular solids suspended substance in the sewage, the settling tank water outlet enters equalizing tank and regulates;
(2) biological phosphate-eliminating is removed organism simultaneously: will introduce as in the biological phosphate-eliminating unit through pretreated sewage, ultra-filtration membrane device in the unitary anaerobic pond of biological phosphate-eliminating, Aerobic Pond and the Aerobic Pond forms a kind of anaerobic-aerobic-membrane biological reaction pond, most of organism of degrading biological phosphate-eliminating the time in anaerobic-aerobic-membrane biological reaction pond, the mass concentration that goes out water suspension is lower, and nitration reaction does not take place substantially, can be used as the unitary water inlet of biological autotrophic denitrification that follow-up biological autotrophic denitrification is handled; Also be provided with suction pump in anaerobic-aerobic-membrane biological reaction pond, by the suction function realization mud-water separation of suction pump;
(3) the biological autotrophic denitrification of Anammox: the water outlet in the step (2) is introduced as in the unitary Anammox of the biological autotrophic denitrification biological filter, and add certain nitrite, ammonia nitrogen in the sewage and nitrite nitrogen generate nitrogen by the anaerobic ammonia oxidizing bacteria metabolism and discharge under anoxia condition, thereby realize the degree of depth of nitrogen in the sewage is removed;
In the present embodiment step (3), the bio-carrier of volcanics biological ceramic particle as anaerobic ammonia oxidizing bacteria can be adopted in the Anammox biological filter, guaranteeing under the effluent quality prerequisite up to standard that the total nitrogen of Anammox biological filter is removed load can reach 0.5kgN/ (m
3D) more than.Because sewage is before entering the Anammox biological filter, having passed through the ultra-filtration membrane device filters, SS concentration in the sewage is lower, so the filtration cycle of Anammox biological filter is longer, this helps the enrichment and the propagation of anaerobic ammonia oxidizing bacteria, thereby makes the operation that can maintain a long-term stability of Anammox biological filter.
As follows through the effluent quality after the above-mentioned processing: water temperature=15～25 ℃; COD＜50mg/L, clearance is more than 90%; BOD
5＜10mg/L, clearance is more than 95%; SS＜10mg/L, clearance is more than 95%; NH
4 +-N＜5mg/L, clearance is more than 95%; TN≤15mg/L, clearance is more than 90%; TP≤0.5mg/L, clearance is more than 90%; PH=7.5～9.0.
The method of the embodiment of the invention is denitrogenated technology with existing sewage dephosphorization and is compared, and has fundamentally solved inherent contradiction and competition between dephosphorization bacterial and the denitrifier.Technology leading portion activated sludge concentration height can significantly improve the microbe population of disposing of sewage, thereby has significantly strengthened the biological treatment ability, can save floor space and initial cost expense.The technology back segment has solved because of short distance nitration hangs down at normal temperature and has been difficult to a stable difficult problem that realizes carrying out the Anammox denitrification reaction in the ammonia-nitrogen sewage, shortened the hydraulic detention time of sewage water denitrification greatly, reactor volume and initial cost can be saved more than 50%, and the denitrogenation sludge yield can reduce more than 90%, and running maintenance is comparatively convenient; And the equipment construction expense that realizes this method is than traditional A
2The regeneration effluent system of the biochemical deep purifying of O and relevant series methods thereof saves more than 25%, and working cost is saved more than 20%, and the reuse water cost reduces more than 20%; Method flow of the present invention is succinct, and dephosphorization and denitrification effect is remarkable, and effluent quality is better than urban wastewater treatment firm comprehensive discharge new standard (GB18918-2002) one-level A water quality standard, satisfies the requirement that sewage treatment facility is carried mark transformation and recycling sewage generated by making; And treatment effect and economic performance have all reached the leading level in the world.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (10)
1. a sewage dephosphorizing and denitrifying method is characterized in that, this method may further comprise the steps:
Pre-treatment: make sewage enter pretreatment unit and carry out pre-treatment, remove macrobead suspended solid in the sewage, and the sewage of removing suspended solid is regulated;
Biological phosphate-eliminating is handled: above-mentioned pretreated water outlet is entered carry out biological phosphate-eliminating in the biological phosphate-eliminating unit and remove organism;
Biological autotrophic denitrification is handled: make the water outlet after above-mentioned biological phosphate-eliminating is handled enter biological autotrophic denitrification unit, in anoxic and need not under the condition of organic carbon source, autotrophic metabolism by the unitary anaerobic ammonia oxidizing bacteria of biological autotrophic denitrification is removed the nitrogen in the sewage, and water outlet after the denitrogenation is finished as the reuse water of dephosphorization denitrogenation in biological autotrophic denitrification unit.
2. sewage dephosphorizing and denitrifying method according to claim 1, it is characterized in that, the pretreatment unit that adopts in the described pre-treatment step constitutes by connecting grid, settling pit, settling tank and equalizing tank successively, the inlet of grid is introduced the inlet of sewage as pretreatment unit, the outlet of equalizing tank as pre-treatment after the outlet of sewage.
3. sewage dephosphorizing and denitrifying method according to claim 1 is characterized in that, the biological phosphate-eliminating unit that adopts in the described biological phosphate-eliminating treatment step is anaerobic-aerobic-membrane biological reaction pond;
The biological autotrophic denitrification unit that adopts in the described biological autotrophic denitrification treatment step is the Anammox biological filter.
4. sewage dephosphorizing and denitrifying method according to claim 3, it is characterized in that, described anaerobic-aerobic-membrane biological reaction pond is formed by connecting by anaerobic pond and Aerobic Pond, be provided with the ultra-filtration membrane device in the Aerobic Pond, be provided with between Aerobic Pond and the anaerobic pond by the return-flow system that reflux pump constitutes is set on the return line;
Also be provided with the suction pump that suction realizes mud-water separation in the described Aerobic Pond.
5. sewage dephosphorizing and denitrifying method according to claim 1 is characterized in that,
In the described biological phosphate-eliminating treatment step, the unitary sludge concentration of biological phosphate-eliminating is 5000～8000mg/L, and dissolved oxygen concentration is 2～3mg/L, and hydraulic detention time is 3～6 hours;
In the described biological autotrophic denitrification treatment step, the unitary filtering velocity of biological autotrophic denitrification is 0.5～2m/h, and the filtrate height is 1.5～3m, and backwashing period is 3～6 months; Add nitrite in biological autotrophic denitrification unit, the mol ratio of ammonia nitrogen is 1.3: 1 in adding nitrite nitrogen and intaking.
6. a sewage water dephosphorization denitrification system is characterized in that, this system comprises:
The pretreatment unit of Lian Jieing, biological phosphate-eliminating unit and biological autotrophic denitrification unit successively, wherein, pretreatment unit is provided with the inlet of introducing sewage, and biological autotrophic denitrification unit is provided with the reuse water outlet.
7. sewage water dephosphorization denitrification according to claim 6 system, it is characterized in that, described pretreatment unit constitutes by connecting grid, settling pit, settling tank and equalizing tank successively, the inlet of grid is introduced the inlet of sewage as pretreatment unit, the outlet of equalizing tank as pre-treatment after the outlet of sewage.
8. sewage water dephosphorization denitrification according to claim 6 system is characterized in that described biological phosphate-eliminating unit is anaerobic-aerobic-membrane biological reaction pond;
Described biological autotrophic denitrification unit adopts the Anammox biological filter.
9. sewage water dephosphorization denitrification according to claim 8 system, it is characterized in that, described anaerobic-aerobic-membrane biological reaction pond is formed by connecting by anaerobic pond and Aerobic Pond, be provided with the ultra-filtration membrane device in the Aerobic Pond, be provided with between Aerobic Pond and the anaerobic pond by the return-flow system that reflux pump constitutes is set on the return line; Also be provided with the suction pump that suction realizes mud-water separation in the described Aerobic Pond;
Described Anammox biological filter is made up of pond body, filtrate, water-distributing device and water-freeing arrangement; Wherein, the pond body is square, rectangle or circle; Filtrate is evenly arranged in the body of pond, and water-distributing device is arranged on filtrate top or filtrate below, and water-freeing arrangement is arranged on Chi Tishang.
10. sewage water dephosphorization denitrification according to claim 9 system is characterized in that, described filtrate is arranged in the body of pond and is one or more layers, and that filtrate adopts is granular, in the waved plate, honeycombed any.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110187171 CN102267783A (en) | 2011-07-05 | 2011-07-05 | Dephosphorizing and denitrifying method and system for sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110187171 CN102267783A (en) | 2011-07-05 | 2011-07-05 | Dephosphorizing and denitrifying method and system for sewage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102267783A true CN102267783A (en) | 2011-12-07 |
Family
ID=45050267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110187171 Pending CN102267783A (en) | 2011-07-05 | 2011-07-05 | Dephosphorizing and denitrifying method and system for sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102267783A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110482792A (en) * | 2019-08-24 | 2019-11-22 | 杭州山屿源环保科技有限公司 | A kind of sewage water denitrification treatment process |
| CN111087075A (en) * | 2020-02-19 | 2020-05-01 | 青岛理工大学 | Aerobic granular sludge coupling one-stage anaerobic ammonia oxidation sewage treatment device and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101244883A (en) * | 2008-03-21 | 2008-08-20 | 北京工业大学 | High-efficiency low-consumption retexture method for urban sewage |
| CN101381156A (en) * | 2008-03-25 | 2009-03-11 | 北京桑德环境工程有限公司 | Sewage disposal system combining membrane bioreactor and phosphorus recovery and processing method |
-
2011
- 2011-07-05 CN CN 201110187171 patent/CN102267783A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101244883A (en) * | 2008-03-21 | 2008-08-20 | 北京工业大学 | High-efficiency low-consumption retexture method for urban sewage |
| CN101381156A (en) * | 2008-03-25 | 2009-03-11 | 北京桑德环境工程有限公司 | Sewage disposal system combining membrane bioreactor and phosphorus recovery and processing method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110482792A (en) * | 2019-08-24 | 2019-11-22 | 杭州山屿源环保科技有限公司 | A kind of sewage water denitrification treatment process |
| CN111087075A (en) * | 2020-02-19 | 2020-05-01 | 青岛理工大学 | Aerobic granular sludge coupling one-stage anaerobic ammonia oxidation sewage treatment device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101244883B (en) | High-efficiency low-consumption retexture method for urban sewage | |
| CN102583905B (en) | Sewage treatment method | |
| CN103819049B (en) | A kind of sewage water treatment method and system | |
| CN204058199U (en) | A kind of A2/O+ MBR combined sewage water regenerating unit | |
| CN102689986B (en) | Sewage treatment method capable of realizing advanced nitrogen removal through combined biofilm process | |
| CN109133531A (en) | A kind of process for town sewage treatment being applicable in quasi- IV class water quality standard | |
| CN102531298A (en) | Sewage treatment device and method for enhanced denitrification A/A/O (Anodic Aluminum Oxide) and deoxygenation BAF (Biological Aerated Filter) | |
| CN102190400A (en) | Method for applying integrated technology of combination of membrane biochemistry and nanofiltration membrane to high-density leachate advanced treatment and recycling | |
| CN101746931B (en) | Denitrification dephosphorization biological treatment and filtration integral sewage treatment system and method thereof | |
| CN103482820A (en) | AAO-biological contact oxidation strengthened nitrogen and phosphorus removal integrated device and method | |
| CN102603128A (en) | Method for advanced treatment and recycling of landfill leachate | |
| CN107055933B (en) | High-ammonia-nitrogen low-carbon/nitrogen-ratio domestic sewage treatment system and method | |
| CN101423314A (en) | High efficiency denitrification, phosphorus removal and phosphorus resource recovery composite for urban sewage | |
| CN104724825A (en) | Sewage treatment method | |
| CN201598224U (en) | Biological nitrogen and phosphorus removal treatment and filter integrated sewage treatment system | |
| CN209619125U (en) | Magnetic-coagulation clarification and denitrification filter pool combined type sewage treatment equipment | |
| CN102351366B (en) | Device and method for treating pharmaceutical waste water through synchronous biological denitrification and devulcanization and autotrophic biological denitrification | |
| CN108002646A (en) | A kind of system and method for landfill leachate zero-emission | |
| CN204727718U (en) | Sewage treatment systems | |
| CN105174642A (en) | Efficient biological denitrification method for sewage | |
| CN104803480A (en) | Multistage bioreactor and method for treating sewage with reactor | |
| CN204981504U (en) | Integration denitrogenation decarbonization bological aerated filter | |
| CN103435158A (en) | Method for reinforcing phosphorus removal and membrane pollution delaying of MBR | |
| CN101391833A (en) | Filter tank type membrane bioreactor | |
| CN100460341C (en) | Biological sewage-treating process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20111207 |