CN101767902B - Method for treating rural wastewater - Google Patents
Method for treating rural wastewater Download PDFInfo
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- CN101767902B CN101767902B CN 200910186883 CN200910186883A CN101767902B CN 101767902 B CN101767902 B CN 101767902B CN 200910186883 CN200910186883 CN 200910186883 CN 200910186883 A CN200910186883 A CN 200910186883A CN 101767902 B CN101767902 B CN 101767902B
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- pond
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- waste water
- membrane bioreactor
- reaction solution
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- 239000002351 wastewater Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000012528 membrane Substances 0.000 claims abstract description 24
- 230000008569 process Effects 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000005273 aeration Methods 0.000 claims description 13
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims description 10
- 239000011574 phosphorus Substances 0.000 claims description 10
- 238000006396 nitration reaction Methods 0.000 claims description 7
- 239000002689 soil Substances 0.000 claims description 7
- 239000007791 liquid phase Substances 0.000 claims description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 238000005374 membrane filtration Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 241000894006 Bacteria Species 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 6
- 239000010865 sewage Substances 0.000 description 6
- 244000005700 microbiome Species 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 229920000388 Polyphosphate Polymers 0.000 description 4
- 229920000037 Polyproline Polymers 0.000 description 4
- 239000001205 polyphosphate Substances 0.000 description 4
- 235000011176 polyphosphates Nutrition 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- WHBMMWSBFZVSSR-GSVOUGTGSA-M (R)-3-hydroxybutyrate Chemical compound C[C@@H](O)CC([O-])=O WHBMMWSBFZVSSR-GSVOUGTGSA-M 0.000 description 2
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 206010002660 Anoxia Diseases 0.000 description 1
- 241000976983 Anoxia Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 241001495402 Nitrococcus Species 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 240000001398 Typha domingensis Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000007953 anoxia Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005183 environmental health Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002054 inoculum Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000002640 oxygen therapy Methods 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a method for treating rural wastewater, which comprises the following steps: pretreating of the wastewater through a grating and an oil separating tank, denitrifying and dephosphorizing through anaerobic-anoxic-aerobic-membrane bioreactor process, further purifying of the wastewater in a wetland treatment system and wastewater emission after reaching standards, thereby protecting the living environment and body health of farmers.
Description
Technical field
The present invention relates to a kind of method for treating rural wastewater.
Background technology
Existing Rural Waste Water is generally processed by simple biodegradation method, at first cure by oxygen therapy to sewage by equipment such as blower fans, cultivate biological inoculum and microorganism, then be a part of organic substance decomposing in the sewage materials such as free of contamination carbonic acid gas, water by bacterial classification and microorganism, the sub-fraction organic synthesis is cellular material in addition, impel microorganisms grow, and discharge with the form of excess sludge, make the sewage discharging that is purified.This biological degradation treatment process can not effectively be removed nitrogen and the phosphorus that contains in the sewage, and then during sewage discharge, nitrogen and phosphorus can exceed standard usually, are discharged into the eutrophication that very easily causes water body in the rivers and lakes, affect the healthy of environmental health and peasant.
Summary of the invention
The object of the present invention is to provide a kind of method for treating rural wastewater that adopts anaerobic-anoxic-oxic-membrane biological reactor process and wetland treatment process.
In order to reach above purpose, the technical solution used in the present invention is: a kind of method for treating rural wastewater may further comprise the steps:
(1) waste water enters pretreatment system, removes the suspended substance in the water;
(2) pretreated waste water enters equalizing tank, carries out the adjustment of water quality and quantity;
(3) from the waste water of described equalizing tank output successively through anaerobic pond, anoxic pond, the aerobic aeration pond, membrane bioreactor reacts, in described anaerobic pond, this waste water with from the backflow liquid phase hybrid reaction in the described anoxic pond, discharge phosphorus, the reaction solution that obtains enters described anoxic pond, reaction solution described in this anoxic pond with from the backflow liquid phase hybrid reaction of described membrane bioreactor, described reaction solution is carried out denitrogenation, pass back into the described anaerobic pond from the output liquid of described anoxic pond output, or enter described aerobic aeration pond, removing organism and to carry out the nitrated of ammonia nitrogen, and then enter described membrane bioreactor;
(4) in described membrane bioreactor, under aeration condition, further remove organism and carry out nitration reaction from the output liquid of described Aerobic Pond, and picked-up phosphorus, the reaction solution of this nitration reaction is back to and carries out denitrification in the described anoxic pond, described membrane bioreactor is under the condition of negative pressure that suction pump produces, and the reaction solution in this reactor is finished filtration treatment through film;
(5) filtered liquid through membrane filtration enters wet land treating system, and this filtered liquid is purified.
Described pretreatment system comprises grid, oil trap, and waste water is removed suspended particle through described grid, removes the suspension oil droplet through described oil trap again.
Described wet land treating system is the natural wetland treatment system, and in this system, described filtered liquid often is in the water saturation state along soil, and growth has the swampland of water-fast plant to flow, in flow process, under water-fast plants and soil combined action, water quality is purified.
Because the present invention has adopted above technical scheme; its advantage is: employing anaerobic-anoxic-oxic-membrane biological reactor process can effectively be removed nitrogen and the phosphorus in the waste water; can further purify water quality by wet land treating system again; so that the pollutent in the waste water up to standard after again discharging, protected peasant's living environment and healthy.
Embodiment
Below further set forth concrete structure of the present invention.
A kind of method for treating rural wastewater after pretreatment, by anaerobic-anoxic-oxic-membrane biological reactor process, carries out denitrogenation dephosphorizing, and then enters wet land treating system first, and waste water is further purified.Biological denitrificaion is undertaken by the nitrification and denitrification reaction, specifically, organonitrogen in the waste water, inorganic nitrogen etc. at first are converted into ammonia nitrogen by ammonifying bacteria under aerobic condition, the nitrate nitrogen of then under the effect of nitrococcus and nitrifier, programming, this process is called aerobic nitrification, subsequently under anoxia condition, by the denitrifying bacteria effect, and have additional carbon that energy is provided, make nitrate-nitrogen reduction become nitrogen from waste water, to overflow.Dephosphorization is undertaken by polyP bacteria, utilizes the polyP bacteria in the waste water under anaerobic to be constrained, and discharges the phosphoric acid salt in the body, and generate energy is in order to absorbing the fast degradation organism, and is converted into poly-B hydroxybutyric acid and stores.The poly-B hydroxybutyric acid generate energy of just degrading when these polyP bacterias enter aerobic condition and storing in the body is used for the synthetic of cell and phosphorus that excessive absorption waste water dissolves, thereby reaches the purpose of dephosphorization.
In present method, Rural Waste Water is collected through sewer line and is confluxed to waste water station, and waste water is removed suspended particulate through grid, removes the suspension oil droplet through oil trap again, then flows into equalizing tank, carries out the adjustment of water quality and quantity; From the waste water of equalizing tank output successively through anaerobic pond, anoxic pond, the aerobic aeration pond, membrane bioreactor reacts, in anaerobic pond, waste water with from the backflow liquid phase hybrid reaction in the anoxic pond, polyP bacteria discharges phosphorus, the reaction solution that obtains enters anoxic pond, in this anoxic pond reaction solution with from the backflow liquid phase hybrid reaction of membrane bioreactor, reaction solution is carried out denitrogenation, pass back into the anaerobic pond from the output liquid of anoxic pond output, or enter the aerobic aeration pond, can remove organism and carry out the nitrated of ammonia nitrogen by the aerobic aeration pond, and then enter membrane bioreactor; Membrane bioreactor can be trapped in activated sludge particles and microorganism in the biological reaction tank, under aeration condition, further remove organism and carry out nitration reaction from the output liquid of Aerobic Pond, and picked-up phosphorus, the reaction solution of this nitration reaction is back to and carries out denitrification in the anoxic pond, membrane bioreactor is under the condition of negative pressure that suction pump produces, reaction solution in this bio-reactor is finished filtration treatment through film, can realize mud-water separation by this filtration treatment, filtered liquid through membrane filtration enters wet land treating system, and this filtered liquid is purified.
In membrane bioreactor, pass through aeration, oxygen is provided on the one hand, produce the surface that the membrane module tubular fibre is washed away in turbulent fluctuation by aeration on the other hand, prevent the surface of particle plugging membrane module, carry out aeration in the membrane bioreactor, can think that membrane bioreactor is Aerobic Pond, organism is carried out the nitration reaction of oxidation and ammonia nitrogen, can also the filtering pathogenic micro-organism.
Wet land treating system is often to be in the water saturation state with rendering to soil through the filtered liquid of membrane filtration, and production has on the swampland of the water-fast plants such as reed, cattail, filtered liquid flows in a certain direction, in flow process, under water-fast plants and soil combined action, water quality is purified, wet land treating system is many-sided to the mechanism of action of sewage purification, and the metabolism of physics settlement action, root system of plant interception, chemical precipitation, soil and root system of plant surface sorption, sorption, microorganism is arranged.But the water outlet qualified discharge of wet land treating system.
Method of the present invention can be administered Rural Waste Water so that the pollutent in the waste water up to standard after again discharging, protected peasant's living environment.
Claims (3)
1. method for treating rural wastewater may further comprise the steps:
(1) waste water enters pretreatment system, removes the suspended substance in the water;
It is characterized in that:
(2) pretreated waste water enters equalizing tank, carries out the adjustment of water quality and quantity;
(3) from the waste water of described equalizing tank output successively through anaerobic pond, anoxic pond, the aerobic aeration pond, membrane bioreactor reacts, in described anaerobic pond, this waste water with from the backflow liquid phase hybrid reaction in the described anoxic pond, discharge phosphorus, the reaction solution that obtains enters described anoxic pond, reaction solution described in this anoxic pond with from the backflow liquid phase hybrid reaction of described membrane bioreactor, described reaction solution is carried out denitrogenation, pass back into the described anaerobic pond from the output liquid of described anoxic pond output, or enter described aerobic aeration pond, removing organism and to carry out the nitrated of ammonia nitrogen, and then enter described membrane bioreactor;
(4) in described membrane bioreactor, under aeration condition, further remove organism and carry out nitration reaction from the output liquid of described Aerobic Pond, and picked-up phosphorus, the reaction solution of this nitration reaction is back to and carries out denitrification in the described anoxic pond, described membrane bioreactor is under the condition of negative pressure that suction pump produces, and the reaction solution in this reactor is finished filtration treatment through film;
(5) filtered liquid through membrane filtration enters wet land treating system, and this filtered liquid is purified.
2. treatment process according to claim 1, it is characterized in that: described pretreatment system comprises grid, oil trap, waste water is removed suspended particle through described grid, removes the suspension oil droplet through described oil trap again.
3. treatment process according to claim 1, it is characterized in that: described wet land treating system is the natural wetland treatment system, in this system, described filtered liquid often is in the water saturation state along soil, and growth has the swampland of water-fast plant to flow, in flow process, under water-fast plants and soil combined action, water quality is purified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910186883 CN101767902B (en) | 2009-12-31 | 2009-12-31 | Method for treating rural wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910186883 CN101767902B (en) | 2009-12-31 | 2009-12-31 | Method for treating rural wastewater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101767902A CN101767902A (en) | 2010-07-07 |
| CN101767902B true CN101767902B (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910186883 Expired - Fee Related CN101767902B (en) | 2009-12-31 | 2009-12-31 | Method for treating rural wastewater |
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| Country | Link |
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| CN (1) | CN101767902B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180562A (en) * | 2011-03-10 | 2011-09-14 | 农业部环境保护科研监测所 | System and method for treating rural life sewage based on speed grow willow |
| CN103145300B (en) * | 2013-03-27 | 2015-09-16 | 四川省水处理及资源化工程技术研究中心 | A kind of sewage disposal and regeneration Apparatus for () and method therefor |
| CN103771666B (en) * | 2014-02-17 | 2014-11-19 | 新乡学院 | An energy-saving treatment method for slaughter wastewater |
| CN105645683B (en) * | 2016-01-12 | 2018-03-16 | 浙江大学 | The life in the countryside that structured packing is strengthened and restaurant wastewater treatment device and its method |
| CN108975625B (en) * | 2018-08-18 | 2021-03-09 | 江苏澳洋生态园林股份有限公司 | Constructed wetland system with nitrogen and phosphorus recovery function |
| CN109111050A (en) * | 2018-09-29 | 2019-01-01 | 湖南新九方科技有限公司 | Solar energy microkinetic rural sewage treatment system |
| CN109111052A (en) * | 2018-09-30 | 2019-01-01 | 湖南新九方科技有限公司 | The polynary rural sewage treatment system of landscape |
| CN110407416A (en) * | 2019-08-12 | 2019-11-05 | 常州大学 | A method for removing steroid estrogen in rural domestic sewage |
| CN110981105A (en) * | 2019-12-25 | 2020-04-10 | 甘肃昊宇环保科技有限公司 | Combined rural domestic sewage treatment system |
| CN112939379B (en) * | 2021-04-19 | 2022-12-13 | 南京理工大学 | A kind of advanced treatment method of lithium battery industrial production wastewater |
| CN114249498B (en) * | 2021-12-22 | 2024-01-12 | 厦门裕清水环保工程有限公司 | Village and town sewage treatment equipment and treatment method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7045063B2 (en) * | 2002-07-26 | 2006-05-16 | The Regents Of The University Of California | Treatment of swine wastewater by biological and membrane separation technologies |
| CN1772651A (en) * | 2005-10-09 | 2006-05-17 | 徐祖信 | Countryside sewage treating mode |
| US7435349B2 (en) * | 2003-11-21 | 2008-10-14 | Industrial Technology Research Institute | System for treating wastewater containing organic compounds |
-
2009
- 2009-12-31 CN CN 200910186883 patent/CN101767902B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7045063B2 (en) * | 2002-07-26 | 2006-05-16 | The Regents Of The University Of California | Treatment of swine wastewater by biological and membrane separation technologies |
| US7435349B2 (en) * | 2003-11-21 | 2008-10-14 | Industrial Technology Research Institute | System for treating wastewater containing organic compounds |
| CN1772651A (en) * | 2005-10-09 | 2006-05-17 | 徐祖信 | Countryside sewage treating mode |
Non-Patent Citations (1)
| Title |
|---|
| 曹斌等.A2/O-膜生物反应器强化生物脱氮除磷中试研究.《中国给水排水》.2007,第23卷(第3期),第22-26页. * |
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| CN101767902A (en) | 2010-07-07 |
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