CN102145969B - Multi-stage anaerobic and aerobic cocurrent flow tail section oxygen-deficient activated sludge process - Google Patents
Multi-stage anaerobic and aerobic cocurrent flow tail section oxygen-deficient activated sludge process Download PDFInfo
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- CN102145969B CN102145969B CN2011101320200A CN201110132020A CN102145969B CN 102145969 B CN102145969 B CN 102145969B CN 2011101320200 A CN2011101320200 A CN 2011101320200A CN 201110132020 A CN201110132020 A CN 201110132020A CN 102145969 B CN102145969 B CN 102145969B
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- pond
- aerobic
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- anoxic
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000010802 sludge Substances 0.000 title claims abstract description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title abstract 6
- 230000002950 deficient Effects 0.000 title abstract 6
- 229910052760 oxygen Inorganic materials 0.000 title abstract 6
- 239000001301 oxygen Substances 0.000 title abstract 6
- 239000010865 sewage Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 239000011259 mixed solution Substances 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 9
- 239000006228 supernatant Substances 0.000 claims description 3
- 230000008021 deposition Effects 0.000 claims description 2
- 239000002244 precipitate Substances 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 12
- 229910052799 carbon Inorganic materials 0.000 abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 6
- 238000005273 aeration Methods 0.000 abstract description 2
- 238000004062 sedimentation Methods 0.000 abstract 2
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 abstract 1
- 238000010992 reflux Methods 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 229920000388 Polyphosphate Polymers 0.000 description 2
- 229920000037 Polyproline Polymers 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000012851 eutrophication Methods 0.000 description 2
- 239000001205 polyphosphate Substances 0.000 description 2
- 235000011176 polyphosphates Nutrition 0.000 description 2
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- CREMABGTGYGIQB-UHFFFAOYSA-N carbon carbon Chemical compound C.C CREMABGTGYGIQB-UHFFFAOYSA-N 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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Abstract
The invention discloses a multi-stage anaerobic and aerobic cocurrent flow tail section oxygen-deficient activated sludge process, which comprises the following steps of: alternatively communicating a plurality of combinations each of which is formed by communicating an anaerobic pond and an aerobic pond with an oxygen-deficient pond; introducing sewage branches into the anaerobic pond of each combination; introducing sludge-water mixed liquid in the anaerobic pond and the aerobic pond of each combination into the oxygen-deficient pond of the combination respectively; introducing sludge-water mixed liquid branches flowing out of the oxygen-deficient pond of each combination into the anaerobic pond and the aerobic pond of a next combination; introducing the sludge-water mixed liquid flowing out of the oxygen-deficient pond of a last combination into a secondary sedimentation tank; and separating and refluxing solid and liquid in the secondary sedimentation tank and introducing sludge shut current into a first anaerobic pond and a first aerobic pond as a start end. The process is suitable for treating urban sewage. The process has the advantages of simple process, saving in aeration amount and less need of carbon source. By adopting the process, the problem of difficulty in realizing efficient dephosphorization and denitrification of urban sewage, caused by low carbon source and the imbalance of the proportion of carbon to nitrogen to phosphorous, is well solved.
Description
Technical field
The present invention relates to a kind of multistage anaerobic-aerobic and flow rear anoxic activated sludge process, be particularly useful for low carbon source domestic sewage treating.
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 is more and more stricter to the limitation standard of the discharging of nitrogen, phosphorus with 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, lower-cost multistage anaerobic-aerobic also flows rear anoxic activated sludge process.
Technical scheme: multistage anaerobic-aerobic of the present invention also flows rear anoxic activated sludge process; Comprise anaerobism, aerobic and anoxic biological treatment; And precipitate through second pond, discharge supernatant in the deposition, simultaneously part mud is refluxed; Be communicated with the combined and alternatively of forming simultaneously with an anoxic pond and be communicated with by an anaerobic pond, an Aerobic Pond a plurality of; Sewage separation is got into the anaerobic pond of each combination simultaneously, and the anaerobic pond of each combination and the muddy water mixed solution in the Aerobic Pond get into the anoxic pond of this combination respectively, and the effusive muddy water mixed solution branch of the anoxic pond of each combination flows into the anaerobic pond and the Aerobic Pond of next combination; So circulation; Effusive muddy water mixed solution gets into second pond in the anoxic pond of last combination, solid-liquid separation in second pond, and the returned sluge shunting gets into first anaerobic pond of top and first Aerobic Pond simultaneously.
The described number that is communicated with the combination of forming simultaneously with an anoxic pond by an anaerobic pond, Aerobic Pond is 2～30; Described sewage separation gets into second pond or does not get into second pond; Described anaerobic pond and anoxic 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 combines 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 is directly got into a plurality of anaerobic ponds; Limited carbon source is preferentially supplied with polyP bacteria; Help improving the phosphor-removing effect of system, the polyP bacteria in the anoxic pond carries out denitrification dephosphorization with nitric nitrogen or nitrite nitrogen oxidation interior carbon source, thereby has realized the dual-purpose saving of carbon carbon source.The multistage arrangement of combination with anaerobic pond Aerobic Pond and stream-anoxic pond; Make active sludge replace and repeatedly short effluxion anaerobism, anoxic and aerobic environment; Make each quasi-microorganism alternately get into to favourable growing environment itself; All kinds of crucial mikrobe types can not helped all kinds of crucial mikrobe types and keep higher biological activity because of the long growing environment of pessimistic time is suppressed.The present invention has and saves aeration rate, needs the advantage that carbon source is less, energy consumption is less, has solved because of carbon source on the low sidely preferably, and carbon, nitrogen, phosphorus ratio imbalance are 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 anaerobic-aerobic of the present invention also flows rear anoxic activated sludge process; Mainly be through anaerobism, aerobic and anoxic biological treatment; At first be communicated with the combined and alternatively of forming simultaneously with an anoxic pond and be communicated with by an anaerobic pond, an Aerobic Pond a plurality of, anaerobic pond and anoxic pond are built jointly or are divided and build; Anoxic pond and Aerobic Pond are built jointly or are divided and build, and the number that is communicated with the combination of forming by an anaerobic pond, Aerobic Pond simultaneously with an anoxic pond is 2～30.Sewage separation is got into the anaerobic pond of each combination simultaneously, and according to the practical situation of sewage quality, sewage separation can get into second pond, also can not get into second pond.The anaerobic pond of each combination and the muddy water mixed solution in the Aerobic Pond get into the anoxic pond of this combination respectively; The effusive muddy water mixed solution branch of the anoxic pond of each combination flows into the anaerobic pond and the Aerobic Pond of next combination; So circulation, effusive muddy water mixed solution gets into second pond, solid-liquid separation in second pond in the anoxic pond of last combination; Discharge supernatant, the returned sluge shunting gets into first anaerobic pond of top and first Aerobic Pond simultaneously.And excess sludge is discharged in timing.
Claims (5)
1. a multistage anaerobic-aerobic and flow rear anoxic activated sludge process; Comprise anaerobism, aerobic and anoxic biological treatment; And precipitate through second pond, discharge supernatant in the deposition, simultaneously part mud is refluxed; It is characterized in that: be communicated with the combined and alternatively of forming simultaneously with an anoxic pond and be communicated with by an anaerobic pond, an Aerobic Pond a plurality of; Sewage separation is got into the anaerobic pond of each combination simultaneously, and the anaerobic pond of each combination and the muddy water mixed solution in the Aerobic Pond get into the anoxic pond of this combination respectively, and the effusive muddy water mixed solution branch of the anoxic pond of each combination flows into the anaerobic pond and the Aerobic Pond of next combination; So circulation; Effusive muddy water mixed solution gets into second pond in the anoxic pond of last combination, solid-liquid separation in second pond, and the returned sluge shunting gets into first anaerobic pond of top and first Aerobic Pond simultaneously.
2. multistage anaerobic-aerobic according to claim 1 also flows rear anoxic activated sludge process, it is characterized in that: the described number that is communicated with the combination of forming simultaneously with an anoxic pond by an anaerobic pond, Aerobic Pond is 2～30.
3. multistage anaerobic-aerobic according to claim 1 also flows rear anoxic activated sludge process, it is characterized in that: described sewage separation gets into second pond or does not get into second pond.
4. multistage anaerobic-aerobic according to claim 1 also flows rear anoxic activated sludge process, and it is characterized in that: described anaerobic pond and anoxic pond are built jointly or divided and build.
5. multistage anaerobic-aerobic according to claim 1 also flows rear anoxic activated sludge process, and it is characterized in that: described anoxic pond and Aerobic Pond are built jointly or divided and build.
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| CN2011101320200A CN102145969B (en) | 2011-05-20 | 2011-05-20 | Multi-stage anaerobic and aerobic cocurrent flow tail section oxygen-deficient activated sludge process |
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| CN102145969B true CN102145969B (en) | 2012-05-23 |
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| CN103601296B (en) * | 2013-11-15 | 2015-11-25 | 玉溪师范学院 | A kind of D-A of diphasic anaerobic anoxic alternate run 2/ O sewage-treating reactor |
| JP6883459B2 (en) * | 2017-04-04 | 2021-06-09 | 株式会社クボタ | Organic wastewater treatment method and organic wastewater treatment equipment |
| CN112573765B (en) * | 2020-11-26 | 2022-08-16 | 湖南鑫远环境科技股份有限公司 | Continuous alternating MBBR sewage treatment device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439908A (en) * | 2008-12-10 | 2009-05-27 | 中国矿业大学 | Anaerobic multi-stage aerobic-anoxic dephosphorization and denitrification process |
| CN101723510A (en) * | 2008-10-30 | 2010-06-09 | 机科发展科技股份有限公司 | Preliminary dexidation-anaerobism-oxygen deficit-multistage aerobic/anaerobic biological N and P removing method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6946073B2 (en) * | 2003-09-02 | 2005-09-20 | Ch2M Hill, Inc. | Method for treating wastewater in a membrane bioreactor to produce a low phosphorus effluent |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101723510A (en) * | 2008-10-30 | 2010-06-09 | 机科发展科技股份有限公司 | Preliminary dexidation-anaerobism-oxygen deficit-multistage aerobic/anaerobic biological N and P removing method and device |
| CN101439908A (en) * | 2008-12-10 | 2009-05-27 | 中国矿业大学 | Anaerobic multi-stage aerobic-anoxic dephosphorization and denitrification process |
Non-Patent Citations (2)
| Title |
|---|
| 吕娟等.厌氧、缺氧、好氧多级交替SBR脱氮除磷试验研究.《环境污染与防治》.2007,第29卷(第9期),648-651. * |
| 李亚峰等.多级厌氧、好氧、缺氧交替SBR工艺脱氮除磷试验启动研究.《沈阳建筑大学学报( 自然科学版)》.2009,第25卷(第2期),316-319. * |
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