CN104724825A - Sewage treatment method - Google Patents
Sewage treatment method Download PDFInfo
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- CN104724825A CN104724825A CN201510116621.0A CN201510116621A CN104724825A CN 104724825 A CN104724825 A CN 104724825A CN 201510116621 A CN201510116621 A CN 201510116621A CN 104724825 A CN104724825 A CN 104724825A
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- Prior art keywords
- pond
- anoxic
- sewage
- anaerobic
- anoxic pond
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
Abstract
The invention relates to a sewage treatment method which comprises the following steps: a water inlet pipeline respectively injects sewage into a pre-anoxic tank, an anaerobic tank and an anoxic tank or respectively injects the sewage into an anaerobic tank and an anoxic tank or only injects the sewage into the anaerobic tank; the pre-anoxic tank performs anoxic denitrification reaction on return sludge and sewage; the anaerobic tank performs anaerobic phosphorus release by biochemical dephosphorization; the anoxic tank performs denitrification; the aerobiotic tank performs organic matter degradation, organic nitrogen/ammonia nitrogen nitrification and phosphorus absorption; the post-anoxic tank simultaneously performs nitrification and denitrification; a sequencing batch sloping plate settling tank performs sludge-water separation treatment and return sludge concentration; and the return sludge returns to the pre-anoxic tank. The sewage treatment method has a comprehensive and flexible reaction system, and can flexibly and universally adapt to various water quality and treatment requirements.
Description
Technical field
The present invention relates to a kind of sewage water treatment method, particularly relate to a kind of method for the treatment of city waste water.
Background technology
Sewage disposal technology can be divided into physical processing techniques, physical chemistry treatment technology, biochemistry treatment technology and chemical treatment method in general, wherein conventional with the biochemistry treatment technology of sewage.Biochemical processing also has a variety of, mainly classifies according to the different situations of microbial growth condition and offering oxygen way.Biological treatment will reach denitrogenation dephosphorizing object just in the space of reactor or must create anaerobism, anoxic, the region such as aerobic the time, to realize multi-form anaerobic-aerobic dephosphorization, aerobic-anaerobic denitrogenation, required hydraulic detention time is longer, some technique reaches more than 12 hours, and capital cost and working cost are all higher.Generally use biological denitrification phosphorous removal technique in the world at present, conventional has: conventional anaerobic/anoxic/aerobic process (A/A/O technique).Several chief cities sewage treatment process is as follows:
(1) A/A/O and improved technology thereof
Along with constantly increasing the weight of of body eutrophication, the nitrogen phosphorus emission standard of effluent of municipal sewage plant is more and more higher, the denitrification dephosphorization technique be most widely used at present is A/A/O and improved technology thereof, this technique forms primarily of anaerobic pond, anoxic pond, Aerobic Pond and second pond, better to organic pollution materials and suspended solids removal effect, but there are following shortcomings: 1. the removal effect of nitrogen and phosphorus is unstable; 2. the change of the influent quality water yield is larger on operating performance impact; 3. design hydraulic detention time longer, working cost is higher.
(2) SBR and modification technique thereof
SBR and modification technique thereof are in time series, realize anaerobism, anoxic and aerobic thus reach denitrogenation dephosphorizing function, reaction and precipitation process concentrate in a pond body and complete, there are process structures few, take up an area little, the features such as flexible operation, but it also has some shortcomings: and 1. SBR and modification technique thereof all use water decanter, by water decanter water outlet quantitative limitation, single pond process water yield can not be very large, therefore this technique is not suitable for large-scale wastewater treatment plant; 2. reactor volume utilization ratio is low, and head loss is large; 3. system device utilization ratio is low, controls complicated; 4. affect by the reaction times, anaerobism, anoxic and aerobic reaction conditions can not be ensured completely; 5. water outlet is discontinuous, subsequent disposal difficulty.
(3) UNITANK technique
UNITANK technique is in fact very similar with three working position technique, although can save second pond and sludge recirculation system, they exist 1. unobvious independently anaerobism, anoxic zones, thus affect Nitrogen/Phosphorus Removal; 2. in reaction tank, sludge concentration is uneven, and in the later stage of reaction time, influent side sludge concentration is low, and precipitation side sludge concentration is high, and 3. UNITANK processing unit platform tricks is many, and plant factor is low, controls complicated; 4. effluent weir is fixed, and initial stage aquifer yield is difficult to determine, and needs reflow treatment.
Summary of the invention
The object of the invention is the defect for prior art, a kind of sewage water treatment method is provided, the biochemical municipal sewage treatment of the integral type that generally can adapt to various water quality and processing requirements that can be flexible and changeable.
For achieving the above object, the invention provides a kind of sewage water treatment method, described method comprises:
Sewage is injected pre-anoxic pond, anaerobic pond and anoxic pond or injects anaerobic pond, anoxic pond respectively or only inject anaerobic pond by inlet channel respectively;
Described pre-anoxic pond carries out the anoxic denitrification reaction of returned sluge and sewage;
Described anaerobic pond carries out the anaerobic phosphorus release of biochemical dephosphorization;
Described anoxic pond carries out denitrification denitrogenation;
Aerobic Pond carries out the absorption of organic matter degradation, organonitrogen and Ammonia Nitrification, phosphorus;
Rear anoxic pond carries out simultaneous nitrification-denitrification process;
Sequence batch (inclined-plate clarifying basin, carry out the concentrated of mud-water separation process and returned sluge, described returned sluge is back to described pre-anoxic pond.
Further, described Aerobic Pond is conducted by first water hole on top and described rear anoxic pond.
Further, described rear anoxic pond is conducted by the second water hole of bottom and described sequence batch (inclined-plate clarifying basin.
Further, the described method mixed solution also comprised in described Aerobic Pond passed through wall plug-flow pump reflux to anoxic pond.
Further, described water inlet respectively injects pre-anoxic pond, anaerobic pond, anoxic pond by 0 ~ 10%, 80 ~ 50%, 20 ~ 40% (this allocation proportion can adjust flexibly according to water quality) by described inlet channel by described water inlet.
The advantage of sewage water treatment method of the present invention is the comprehensive of reactive system and handiness, the various water quality of generally adaptation that can be flexible and changeable and processing requirements.
Accompanying drawing explanation
The schematic diagram of the Sewage treatment systems that Fig. 1 uses for sewage water treatment method of the present invention;
Fig. 2 is the 1-1 sectional view of Fig. 1;
Fig. 3 is the 2-2 sectional view of Fig. 1;
Fig. 4 is the schema of sewage water treatment method of the present invention.
Embodiment
Below by accompanying drawing and example, technical scheme of the present invention is described in further detail.
The schematic diagram of the Sewage treatment systems that Fig. 1 uses for sewage water treatment method of the present invention, Fig. 2 is the 1-1 sectional view of Fig. 1, and Fig. 3 is the 2-2 sectional view of Fig. 1.As shown in the figure, Sewage treatment systems comprises pre-anoxic pond 1, anaerobic pond 2, anoxic pond 3, Aerobic Pond 4, rear anoxic pond 5, sequence batch (inclined-plate clarifying basin 6.
Further, be conducted by partition wall water hole between pre-anoxic pond 1, anaerobic pond 2, anoxic pond 3, Aerobic Pond 4, rear anoxic pond 5, sequence batch (inclined-plate clarifying basin 6.
Pre-anoxic pond 1 is connected with inlet channel 7, and the anoxic denitrification for returned sluge and sewage reacts.Anaerobic pond 2 is connected with inlet channel 7, and is conducted with pre-anoxic pond 1, for carrying out anaerobic phosphorus release during biochemical dephosphorization.Anoxic pond 3 is connected with inlet channel 7, and is conducted, for denitrification denitrogenation with anaerobic pond 2.Aerobic Pond 4 and anoxic pond 3 are conducted, for the absorption of organic matter degradation, organonitrogen and Ammonia Nitrification, phosphorus.Rear anoxic pond 5 is conducted, for simultaneous nitrification-denitrification process with Aerobic Pond 4.Sequence batch (inclined-plate clarifying basin 6 and rear anoxic pond 5 are conducted, concentrated for mud-water separation process and returned sluge 8, and returned sluge 8 is back to pre-anoxic pond.
Fig. 4 is the schema of sewage water treatment method of the present invention, and as shown in the figure, the present invention specifically comprises the steps:
Step 101, sewage is injected pre-anoxic pond, anaerobic pond and anoxic pond or injects anaerobic pond, anoxic pond respectively or only inject anaerobic pond by inlet channel respectively;
Step 102, pre-anoxic pond carries out the anoxic denitrification reaction of returned sluge and sewage;
Pre-anoxic pond is used for the anoxic denitrification of returned sluge, and denitrifying carbon source mainly from mud component, or is added by urban sewage;
Step 103, anaerobic pond carries out the anaerobic phosphorus release of biochemical dephosphorization;
Anaerobic pond is used for carrying out anaerobic phosphorus release when the biochemical dephosphorization of system;
Step 104, anoxic pond carries out denitrification denitrogenation;
Anoxic pond is used for the denitrification denitrogenation of system;
Step 105, Aerobic Pond carries out the absorption of organic matter degradation, organonitrogen and Ammonia Nitrification, phosphorus;
Aerobic Pond is used for the aerobic reaction process such as absorption of system organic matter degradation, organonitrogen and Ammonia Nitrification, phosphorus;
Step 106, rear anoxic pond carries out simultaneous nitrification-denitrification process;
Rear anoxic pond adopts simultaneous nitrification-denitrification technique;
Step 107, sequence batch (inclined-plate clarifying basin, carry out the concentrated of mud-water separation process and returned sluge, returned sluge is back to pre-anoxic pond.
Sequence batch (settling tank provides good mud-water separation effect and the concentrated effect of returned sluge, and improves the concentration of excess sludge.
Pre-anoxic pond, anaerobic pond, anoxic pond are connected with inlet channel, municipal effluent enters native system after sand setting process, according to the difference of the water yield and water quality, select water inlet position and operation scheme, biochemical treatment is carried out to sewage, last sewage enters sequence batch (inclined-plate clarifying basin and carries out mud-water separation discharge, and the sludge part of precipitation is back to pre-anoxic pond, and part is as excess sludge discharge.
Feature of the present invention is the comprehensive of reactive system and handiness.
When carbon N∶P ratio of intaking is normal, operation scheme is: the sewage after sand setting process introduces Sewage treatment systems, flows through anaerobic pond, anoxic pond, Aerobic Pond, rear anoxic pond successively, flows out from sequence batch (inclined-plate clarifying basin.Mixed solution in Aerobic Pond passed through wall plug-flow pump reflux to anoxic pond; Returned sluge enters pre-anoxic pond.
When carbon-nitrogen ratio of intaking is lower, run simultaneous nitrification-denitrification pattern.Now utilize water inlet pipe will intake sewage by described water inlet by 0 ~ 10%, 80 ~ 50%, 20 ~ 40% (this allocation proportion can adjust flexibly according to water quality) allocate into respectively pre-anoxic pond, anaerobic pond, anoxic pond run.
Sewage water treatment method of the present invention can effectively remove organic pollutant, total Kjeldahl nitrogen, suspended solids and portion phosphate by biochemical reaction.After the inventive method process, water outlet COD (50mg/L can be made, biochemical oxygen demand (BOD) BOD5 (10mg/L on the 5th, suspended solids SS (20mg/L, total nitrogen TN-N (15mg/L, NH3-N (5mg/L (temperature >12oC), NH3-N (8mg/L (temperature (12oC).
The invention has the advantages that: precipitating sludge is back to pre-anoxic pond 1 to carry out endogenous denitrification and remove nitric nitrogen, and reflux ratio is 80-150%, remove nitric nitrogen and mud after anoxic is stablized enters anaerobic pond; By multipoint water feeding, distribution carbon source can be optimized, guarantee Nitrogen/Phosphorus Removal; By arranging rear anoxic pond, synchronous nitration denitrification denitrogenation can be carried out; By arranging swash plate in sequence batch (settling tank, improving mud-water separation effect, and arrange flushing arrangement bottom swash plate; Equal treatment effect, the present invention to save land area 30%--50% compared with other similar techniques, and working cost saves 20%--30%.
Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a sewage water treatment method, is characterized in that, described method comprises:
Sewage is injected pre-anoxic pond, anaerobic pond and anoxic pond or injects anaerobic pond, anoxic pond respectively or only inject anaerobic pond by inlet channel respectively;
Described pre-anoxic pond carries out the anoxic denitrification reaction of returned sluge and sewage;
Described anaerobic pond carries out the anaerobic phosphorus release of biochemical dephosphorization;
Described anoxic pond carries out denitrification denitrogenation;
Aerobic Pond carries out the absorption of organic matter degradation, organonitrogen and Ammonia Nitrification, phosphorus;
Rear anoxic pond carries out simultaneous nitrification-denitrification process;
Sequence batch (inclined-plate clarifying basin, carry out the concentrated of mud-water separation process and returned sluge, described returned sluge is back to described pre-anoxic pond.
2. method according to claim 1, is characterized in that, described Aerobic Pond is conducted by first water hole on top and described rear anoxic pond.
3. method according to claim 1, is characterized in that, described rear anoxic pond is conducted by the second water hole of bottom and described sequence batch (inclined-plate clarifying basin.
4. method according to claim 1, is characterized in that, the described method mixed solution also comprised in described Aerobic Pond passed through wall plug-flow pump reflux to anoxic pond.
5. method according to claim 1, it is characterized in that, described water inlet injects pre-anoxic pond, anaerobic pond, anoxic pond by 0 ~ 10%, 80 ~ 50%, 20 ~ 40% (this allocation proportion can adjust flexibly according to water quality) respectively by described inlet channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510116621.0A CN104724825A (en) | 2015-03-17 | 2015-03-17 | Sewage treatment method |
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| CN201510116621.0A CN104724825A (en) | 2015-03-17 | 2015-03-17 | Sewage treatment method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106006975A (en) * | 2016-07-29 | 2016-10-12 | 扬州市洁源排水有限公司 | AAO sewage treatment technology for optimal utilization of internal carbon source |
| CN106495324A (en) * | 2016-11-17 | 2017-03-15 | 天津市市政工程设计研究院 | The multistage AO+SBR sewage disposal reaction tanks of high-efficient denitrification and dephosphorization and method |
| CN106830321A (en) * | 2017-03-02 | 2017-06-13 | 可事托环保设备（上海）有限公司 | Multiple-unit Improvement type sequencing batch reactor and its application |
| CN107585864A (en) * | 2017-11-01 | 2018-01-16 | 济宁市孚源环保科技有限公司 | A kind of mud film combined sewage deep treatment method |
| CN108218150A (en) * | 2018-03-21 | 2018-06-29 | 浙江海元环境科技有限公司 | A kind of rural domestic sewage treatment pond and processing method |
| CN108585350A (en) * | 2018-03-30 | 2018-09-28 | 安徽华骐环保科技股份有限公司 | A kind of town sewage treatment system up to standard to IV class water of surface water |
| CN108793409A (en) * | 2018-08-29 | 2018-11-13 | 陕西朗正环保科技有限公司 | A kind of sewage-treatment plant suitable for country sewage changes in flow rate |
| CN108892241A (en) * | 2018-08-29 | 2018-11-27 | 陕西朗正环保科技有限公司 | Integrated rural sewage-treatment plant associated with a kind of AAO and SBR technique |
| CN113845218A (en) * | 2021-08-24 | 2021-12-28 | 无锡惠山环保水务有限公司 | Multistage AO sewage treatment system and process thereof |
| CN115432820A (en) * | 2022-08-24 | 2022-12-06 | 中核四0四有限公司 | Sewage treatment method and system |
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| CN102659288A (en) * | 2012-05-21 | 2012-09-12 | 重庆大学 | Low-carbon-source sewage treatment system for reinforcing denitrification and dephosphorization functions and method |
| CN202688094U (en) * | 2012-05-09 | 2013-01-23 | 广州市市政工程设计研究院 | Sequencing batch type A2O (anaerobic anoxic oxic) sewage treatment device |
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Patent Citations (4)
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| JP2002059191A (en) * | 2000-08-21 | 2002-02-26 | Hitachi Kiden Kogyo Ltd | Method of treating sewage and sludge |
| CN101279794A (en) * | 2008-04-18 | 2008-10-08 | 清华大学 | Enhanced endogenous denitrification process and device for denitrification and phosphorus removal by using film-bioreactor |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106006975B (en) * | 2016-07-29 | 2019-04-23 | 扬州市洁源排水有限公司 | The AAO sewage treatment process of interior carbon source Optimum utilization |
| CN106006975A (en) * | 2016-07-29 | 2016-10-12 | 扬州市洁源排水有限公司 | AAO sewage treatment technology for optimal utilization of internal carbon source |
| CN106495324A (en) * | 2016-11-17 | 2017-03-15 | 天津市市政工程设计研究院 | The multistage AO+SBR sewage disposal reaction tanks of high-efficient denitrification and dephosphorization and method |
| CN106495324B (en) * | 2016-11-17 | 2019-08-16 | 天津市市政工程设计研究院 | High-efficient denitrification and dephosphorization multistage AO+SBR sewage disposal reaction tank and method |
| CN106830321B (en) * | 2017-03-02 | 2017-12-01 | 可事托环保设备（上海）有限公司 | Multiple-unit Improvement type sequencing batch reactor and its application |
| CN106830321A (en) * | 2017-03-02 | 2017-06-13 | 可事托环保设备（上海）有限公司 | Multiple-unit Improvement type sequencing batch reactor and its application |
| CN107585864A (en) * | 2017-11-01 | 2018-01-16 | 济宁市孚源环保科技有限公司 | A kind of mud film combined sewage deep treatment method |
| CN108218150A (en) * | 2018-03-21 | 2018-06-29 | 浙江海元环境科技有限公司 | A kind of rural domestic sewage treatment pond and processing method |
| CN108585350A (en) * | 2018-03-30 | 2018-09-28 | 安徽华骐环保科技股份有限公司 | A kind of town sewage treatment system up to standard to IV class water of surface water |
| CN108793409A (en) * | 2018-08-29 | 2018-11-13 | 陕西朗正环保科技有限公司 | A kind of sewage-treatment plant suitable for country sewage changes in flow rate |
| CN108892241A (en) * | 2018-08-29 | 2018-11-27 | 陕西朗正环保科技有限公司 | Integrated rural sewage-treatment plant associated with a kind of AAO and SBR technique |
| CN108793409B (en) * | 2018-08-29 | 2023-12-29 | 中化学朗正环保科技有限公司 | Sewage treatment device suitable for rural sewage flow change |
| CN113845218A (en) * | 2021-08-24 | 2021-12-28 | 无锡惠山环保水务有限公司 | Multistage AO sewage treatment system and process thereof |
| CN115432820A (en) * | 2022-08-24 | 2022-12-06 | 中核四0四有限公司 | Sewage treatment method and system |
| CN115432820B (en) * | 2022-08-24 | 2023-07-21 | 中核四0四有限公司 | Sewage treatment method and system |
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Application publication date: 20150624 |