CN102276062A - Multistage anaerobic and anoxic circulating final segment aerobic activated sludge process - Google Patents
Multistage anaerobic and anoxic circulating final segment aerobic activated sludge process Download PDFInfo
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- CN102276062A CN102276062A CN 201110132025 CN201110132025A CN102276062A CN 102276062 A CN102276062 A CN 102276062A CN 201110132025 CN201110132025 CN 201110132025 CN 201110132025 A CN201110132025 A CN 201110132025A CN 102276062 A CN102276062 A CN 102276062A
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Abstract
The invention discloses a multistage anaerobic and anoxic circulating final segment aerobic activated sludge process. The process comprises the following steps of: alternatively connecting a plurality of anoxic ponds with a plurality of aerobic ponds, connecting each anoxic pond with an anaerobic pond, and forming a combination by an anoxic pond, a next anaerobic pond connected with the anoxic pond and an aerobic pond connected with the anaerobic pond; and splitting sewage, making the split sewage enter the anaerobic pond and a secondary sedimentation pond of each combination simultaneously, mixing the sewage entering the anaerobic pond with a mud-water mixed liquor entering the anaerobic pond from the anoxic pond of the combination, circulating the mixture between the anaerobic pond and the anoxic pond of the combination, making the mud-water mixed liquor flowing out of the anaerobic pond of each combination enter the aerobic pond of the combination, making the mud-water mixed liquor flowing out of the aerobic pond enter the anoxic pond of a next combination, and making the mud-water mixed liquor flowing out of the aerobic pond of the last combination enter the secondary sedimentation pond. The process is most suitable for treating urban domestic sewage, and has the advantages of saving in aeration amount and need of a small quantity of carbon sources; and the problem of difficulty in efficiently removing nitrogen and phosphorus from urban sewage, caused by a small quantity of carbon sources and the ratio imbalance of carbon, nitrogen and phosphorus is well solved.
Description
Technical field
The present invention relates to biological dephosphorize denitrification technology, especially a kind of multistage anaerobism anoxic circulation rear aerobic activated sludge technology that is applicable to that low carbon source city domestic sewage is handled.
Background technology
In recent years, the problem of water environment pollution and body eutrophication is serious day by day.And nitrogen, phosphorus are the principal elements that causes body eutrophication.Along with the raising of Public Environmental Awareness and more and more stricter to the limitation standard of the discharging of nitrogen, phosphorus both at home and abroad, sewage disposal technology, especially wastewater biological dephosphorization denitrogenation technology that research and development are economical, remove nitrogen, phosphorus efficiently are the focuses in water pollution control engineering field always.
Summary of the invention
Technical problem: the objective of the invention is to overcome the weak point in the prior art, provide that a kind of technology is simple, energy consumption is less, the multistage anaerobism anoxic circulation rear aerobic activated sludge technology that cost is low.
Technical scheme: multistage anaerobism anoxic circulation rear aerobic activated sludge technology of the present invention, comprise anoxic, anaerobic and aerobic biological treatment, and precipitate, discharge supernatant liquor in the precipitation, simultaneously part mud is refluxed, process steps is as follows:
A. a plurality of anoxic pond, a plurality of Aerobic Pond alternately are communicated with, each anoxic pond all is connected with an anaerobic pond, forms a plurality of combinations of forming by an anoxic pond, with a back anaerobic pond of this anoxic pond connection and the Aerobic Pond that links to each other with this anoxic pond;
B. sewage separation is entered simultaneously the anaerobic pond and the second pond of each combination, entering the sewage of anaerobic pond mixes with the muddy water mixed solution that anoxic pond from this combination enters anaerobic pond, and between the anaerobic pond of this combination and anoxic pond, circulate, the effusive muddy water mixed solution of the anoxic pond of each combination enters the Aerobic Pond of this combination, the Aerobic Pond of each combination flows out the anoxic pond that muddy water mixed solution enters next combination, and the effusive mixed solution of the Aerobic Pond of last combination enters second pond.
The number of the combination that a described back anaerobic pond that is communicated with by an anoxic pond, with this anoxic pond and the Aerobic Pond that links to each other with this anoxic pond are formed is 2～30; Described anoxic pond and anaerobic pond are built jointly or are divided and build; Described anoxic pond and Aerobic Pond are built jointly or are divided and build.
Beneficial effect: the present invention is in conjunction with method for biologically treating wastewater, make full use of limited carbon source, improve the utilization ratio of carbon source in the wastewater treatment, solved the insufficient problem of carbon source in the wastewater biological dephosphorization effectively, improved the sludge concentration of system simultaneously significantly.Sewage directly enters anaerobic pond, and limited carbon source is preferentially supplied with polyP bacteria; Muddy water mixed solution circulates between anaerobic pond and anoxic pond, helps forming denitrification dephosphorization under anoxia condition, and denitrification denitrogenation and 2 self-contained process of suction phosphorus are united two into one, and a carbon is dual-purpose.Sewage effusive muddy water mixed solution in last Aerobic Pond that shunting enters second pond enters second pond, in the mud-water separation process, continues to finish anti-nitration reaction, reduces nitrite nitrogen and nitric nitrogen in returned sluge and the water outlet.The present invention has and saves aeration rate, needs advantages such as carbon source is less, can solve preferably because of carbon source on the low side, carbon, nitrogen, phosphorus ratio imbalance, and be difficult to realize the municipal sewage treatment problem of highly effective dephosphorizing denitrification.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are further described:
Multistage anaerobism anoxic circulation rear aerobic activated sludge technology of the present invention, mainly carry out anoxic, anaerobic and aerobic biological treatment by anoxic pond, anaerobic pond and Aerobic Pond, again through the second pond precipitation, discharge supernatant liquor in the precipitation, simultaneously part mud is refluxed, anaerobic pond and anoxic pond can be built jointly also can divide and build, and anoxic pond and Aerobic Pond can be built jointly also can divide and build.At first a plurality of anoxic pond, a plurality of Aerobic Pond alternately are communicated with, each anoxic pond all is connected with an anaerobic pond, forms a plurality of combinations of forming by an anoxic pond, with a back anaerobic pond of this anoxic pond connection and the Aerobic Pond that links to each other with this anoxic pond; The number of the combination that a back anaerobic pond that is communicated with by an anoxic pond, with this anoxic pond and the Aerobic Pond that links to each other with this anoxic pond are formed is 2～30.Sewage separation is entered simultaneously the anaerobic pond and the second pond of each combination, entering the sewage of anaerobic pond mixes with the muddy water mixed solution that anoxic pond from this combination enters anaerobic pond, and between the anaerobic pond of this combination and anoxic pond, circulate, the effusive muddy water mixed solution of the anoxic pond of each combination enters the Aerobic Pond of this combination, the Aerobic Pond of each combination flows out the anoxic pond that muddy water mixed solution enters next combination, the effusive mixed solution of the Aerobic Pond of last combination enters second pond, solid-liquid separation in second pond, discharge supernatant liquor, returned sluge enters first anoxic pond, and regularly discharges excess sludge.
Claims (4)
1. a multistage anaerobism anoxic circulation rear aerobic activated sludge technology comprises anoxic, anaerobic and aerobic biological treatment, and precipitates, and discharges supernatant liquor in the precipitation, simultaneously part mud is refluxed, and it is characterized in that process steps is as follows:
A. a plurality of anoxic pond, a plurality of Aerobic Pond alternately are communicated with, each anoxic pond all is connected with an anaerobic pond, forms a plurality of combinations of forming by an anoxic pond, with a back anaerobic pond of this anoxic pond connection and the Aerobic Pond that links to each other with this anoxic pond;
B. sewage separation is entered simultaneously the anaerobic pond and the second pond of each combination, entering the sewage of anaerobic pond mixes with the muddy water mixed solution that anoxic pond from this combination enters anaerobic pond, and between the anaerobic pond of this combination and anoxic pond, circulate, the effusive muddy water mixed solution of the anoxic pond of each combination enters the Aerobic Pond of this combination, the Aerobic Pond of each combination flows out the anoxic pond that muddy water mixed solution enters next combination, and the effusive mixed solution of the Aerobic Pond of last combination enters second pond.
2. multistage anaerobism anoxic circulation rear aerobic activated sludge technology according to claim 1 is characterized in that: the number of the combination that a described back anaerobic pond that is communicated with by an anoxic pond, with this anoxic pond and the Aerobic Pond that links to each other with this anoxic pond are formed is 2～30.
3. multistage anaerobism anoxic circulation rear aerobic activated sludge technology according to claim 1, it is characterized in that: described anoxic pond and anaerobic pond are built jointly or are divided and build.
4. multistage anaerobism anoxic circulation rear aerobic activated sludge technology according to claim 1, it is characterized in that: described anoxic pond and Aerobic Pond are built jointly or are divided and build.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110132025 CN102276062A (en) | 2011-05-20 | 2011-05-20 | Multistage anaerobic and anoxic circulating final segment aerobic activated sludge process |
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| CN 201110132025 CN102276062A (en) | 2011-05-20 | 2011-05-20 | Multistage anaerobic and anoxic circulating final segment aerobic activated sludge process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103668835A (en) * | 2013-12-06 | 2014-03-26 | 无锡大阿福信息科技有限公司 | System for recycling waste alkaline water in weak alkali pool |
| CN104478081A (en) * | 2014-12-01 | 2015-04-01 | 中国矿业大学 | Anaerobic-anoxic/aerobic-parallel reinforced dephosphorization and denitrification technique |
| CN109851049A (en) * | 2019-04-11 | 2019-06-07 | 信开水环境投资有限公司 | Sewage treatment unit and its application method and purposes |
| CN110745948A (en) * | 2019-09-27 | 2020-02-04 | 中车环境科技有限公司 | Sectional water inlet deep dephosphorization and denitrification process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1772655A (en) * | 2005-09-27 | 2006-05-17 | 中国矿业大学 | High efficiency nitrification process of biological sewage treatment |
| CN101691268A (en) * | 2009-09-17 | 2010-04-07 | 上海市政工程设计研究总院 | Biochemical reaction tank and denitrification and dephosphorization process thereof |
| CN101885559A (en) * | 2010-06-25 | 2010-11-17 | 可事托环保设备（上海）有限公司 | Multi-level biological nitrogen and phosphorus removal sewage treatment method and device |
-
2011
- 2011-05-20 CN CN 201110132025 patent/CN102276062A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1772655A (en) * | 2005-09-27 | 2006-05-17 | 中国矿业大学 | High efficiency nitrification process of biological sewage treatment |
| CN101691268A (en) * | 2009-09-17 | 2010-04-07 | 上海市政工程设计研究总院 | Biochemical reaction tank and denitrification and dephosphorization process thereof |
| CN101885559A (en) * | 2010-06-25 | 2010-11-17 | 可事托环保设备（上海）有限公司 | Multi-level biological nitrogen and phosphorus removal sewage treatment method and device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103668835A (en) * | 2013-12-06 | 2014-03-26 | 无锡大阿福信息科技有限公司 | System for recycling waste alkaline water in weak alkali pool |
| CN104478081A (en) * | 2014-12-01 | 2015-04-01 | 中国矿业大学 | Anaerobic-anoxic/aerobic-parallel reinforced dephosphorization and denitrification technique |
| CN109851049A (en) * | 2019-04-11 | 2019-06-07 | 信开水环境投资有限公司 | Sewage treatment unit and its application method and purposes |
| CN110745948A (en) * | 2019-09-27 | 2020-02-04 | 中车环境科技有限公司 | Sectional water inlet deep dephosphorization and denitrification process |
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Application publication date: 20111214 |