CN101456627A - Sewage water and sludge co-processing emission-reducing process and system - Google Patents
Sewage water and sludge co-processing emission-reducing process and system Download PDFInfo
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- CN101456627A CN101456627A CNA2008102469742A CN200810246974A CN101456627A CN 101456627 A CN101456627 A CN 101456627A CN A2008102469742 A CNA2008102469742 A CN A2008102469742A CN 200810246974 A CN200810246974 A CN 200810246974A CN 101456627 A CN101456627 A CN 101456627A
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- 239000002351 wastewater Substances 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
本发明公开了一种污水与污泥共处理的减排工艺与系统，主要由厌氧反应器、缺氧反应器和好氧膜生物反应器组成，辅助设备包括缺氧区搅拌机、污泥回流泵、膜生物反应器出水泵和自控装置；反应池体采用砼、PVC或玻璃钢制作，其特征在于可将好氧膜生物反应器中的污泥混合液通过污泥回流泵回流至厌氧反应器和缺氧反应器的回水口，使污水和污泥在厌氧条件下发生水解酸化、产酸和产甲烷三个过程；在缺氧反应器中发生反硝化脱氮过程，从而使污泥减量和资源化，达到除污减排的目的。本发明适用于不同规模的处理厂污水、污泥的处理。
The invention discloses an emission reduction process and system for the co-treatment of sewage and sludge. It mainly consists of anaerobic reactor, anoxic reactor and aerobic membrane bioreactor. The auxiliary equipment includes agitator in anoxic zone and sludge return Pump, membrane bioreactor outlet pump and automatic control device; the reaction tank body is made of concrete, PVC or glass fiber reinforced plastics, which is characterized in that the sludge mixture in the aerobic membrane bioreactor can be returned to the anaerobic reaction through the sludge return pump The return port of the anoxic reactor and the anoxic reactor, so that the sewage and sludge undergo three processes of hydrolytic acidification, acid production and methane production under anaerobic conditions; the denitrification and denitrification process occurs in the anoxic reactor, so that the sludge Reduction and resource utilization to achieve the purpose of pollution removal and emission reduction. The invention is applicable to the treatment of sewage and sludge in treatment plants of different scales.
Description
Technical field
The present invention relates to the processing of water, waste water or mud, relate in particular to the biological treatment of water, waste water or sewage.
Background technology
Dispose about sludge treatment, most of sewage works all adopt biological treatment, comprise anaerobic and aerobic technology.This class technology especially aerobic process has produced a large amount of excess sludges, need regularly discharge and handle.Annual sludge discharged amount (dry weight) about 1,400,000 tons of wastewater treatment in China factory, and with annual speed increment more than 10%.The problem of environmental pollution that mud produces becomes increasingly conspicuous, and contains hazardous and noxious substances such as a large amount of heavy metal substances, pathogenic bacteria in the mud, has caused great potential safety hazard, environmental stress and economical load.
That domestic sludge treatment technology mainly contains is concentrated, dehydration, nitrated, fermentation and mummification.Most sludge of sewage treatment plants method of disposal first-selections are landfills, secondly are the utilizations of mud soil, and the mud landfill has accounted for sizable ratio.Because landfill yard mostly is greatly in the open, after the rainwater leaching, not have stable and innoxious mud resiles very soon, to the serious harm of formation safely in landfill place.Handle the obstruction that mud not in place also causes the landfill yard filtration system, near the underground water the severe contamination.Especially when mud and rubbish mixing landfill, make the life-span of many refuse landfills reduce greatly, bring very big trouble to Urban Rubbish Disposal.
Method about sludge stabilizing at present commonly used is that anaerobic digestion, aerobic nitrification, fermentation and alkaline process are stable etc.Compare with other sludge stabilization process, although the anaerobic sludge digestion investment is bigger, because its energy consumption is low, and the energy recovered energy, so its investment can obtain recovery quickly, thereby be subjected to people's favor.
About anaerobic digestion process, be an extremely complicated process, anaerobic digestion three stage theories are current theoretical patterns of comparatively generally acknowledging.Fs, organism makes carbohydrate, protein and fat under the effect of hydrolysis and fermenting bacteria, is converted into monose, amino acid, lipid acid, glycerine, carbonic acid gas and hydrogen etc. through hydrolysis and fermentation.Subordinate phase is under the effect of producing the hydrogen acetogen, and the product of fs is changed into hydrogen, carbonic acid gas and acetate.Phase III,, hydrogen and carbonic acid gas are converted into methane or the acetate decarboxylation is produced methane by the effect of methanogens different on two groups of physiology rerum naturas.Generalized theory, its technological process are exactly under the condition of anaerobic, and by amphimicrobe and obligatory anaerobic bacteria (methanobacteria) degradation of organic substances, the final product of decomposition is the process of carbonic acid gas and methane.Its objective is and easily degenerate smelly organism in the degraded mud, further reduce liquid and amount of solids, reduce pathogenic bacteria, eliminate stink and easier dehydration.
Anaerobic sludge digestion has become sludge organism treatment process the most commonly used in the world at present, also is simultaneously the most economic method for sludge treatment of large-scale wastewater treatment plant.According to European Union statistics, in all mud that Sewage Plant is discharged, there is 76% mud before ultimate disposal, to obtain stabilizing treatment approximately, wherein through the accounting for more than 50% of Anaerobic Digestion, be about 18% through aerobic stabilizing treatment.The U.S. has 68% sewage work to adopt the method for anaerobic digestion to handle mud, and in Germany, service population is greater than 30000 people (about 9000m
3/ d) sewage work adopts anaerobic digestion process to handle mud mostly, and the France and the East European countries adopt sewage work's service population of anaerobic digestion process processing mud much in 100000 people (about 30000m
3/ d).According to the experience of federal (removing federation) Germany, generally work as sewage work's scale and surpass 5000m
3During/d, anaerobic sludge digestion is the most economic method.And what is more important, the sludge stabilizing degree that anaerobic sludge digestion technology is reached is that other aerobic stabilization process are incomparable.
The most of sewage works of China all adopt thickening to handle mud, and the sewage work of employing stabilization treatment is less than 20%.Sludge stabilization process commonly used at present mainly is anaerobic digestion, accounts for 38.04%, and aerobic nitrification only accounts for 2.81%.Anaeration in normal temperature is nitrated to be domestic mud stabilization process commonly used, can reclaim biogas, and marsh gas power generation is as the part energy of sewage work.
The sludge stabilizing degree of treatment is lower, major reason be in, Sewage Plant is built Sludge Digestion system cost height separately on a small scale, income is not remarkable, and operational management inconvenience.
Summary of the invention
Proposition of the present invention, be intended to design a kind of sewage, sludge co-processing emission-reducing process and system based on anaerobic-anoxic-aerobic membrane bioreactor, residual active sludge and sewage backflow that biological treatment stage produces are sent into this system jointly, realize the purpose of mud decrement and water outlet regeneration by the co-processing of mud and sewage.
Technical solution of the present invention is achieved in that
The discharge-reducing method of a kind of sewage and mud co-processing, its technological process comprises the step of anaerobic reaction, hypoxia response and aerobic membrane biological reaction, it is characterized in that: the mud mixed liquid in the aerobic membrane bioreactor is back to anaerobic reactor water return outlet and anoxic reacter water return outlet respectively by sludge circulation pump, the mud quantity of reflux that is back to the anaerobism section should keep continuous, constant, and flow equals the mud proliferative amount of aerobic section; The mud quantity of reflux that is back to the anoxic section is 50～300% of a water flow; The aerobic membrane bioreactor dissolved oxygen concentration generally is controlled at 2mgL
-1More than, the sludge concentration in the reactor maintains 3000～10000mgL
-1Scope; Acidication under anaerobic takes place, produces acid and produces three processes of methanation in aerobic nitrification mud mixed liquid wherein; Denitrification process then takes place in anoxic reacter and generate nitrogen, the operating temperature that the operating temperature of described anaerobic reaction process maintains 30～35 ℃, anoxic reacter and aerobic membrane bioreactor remains on 15 ~ 30 ℃; For the biochemical property of COD below 2000mg/L waste water preferably, be that 12～48h, anoxic section 6～12h, aerobic section are 6～12h at anaerobism section hydraulic detention time.
The emission-reducing system of a kind of sewage and mud co-processing, comprise system control device and reaction tank body, the reaction tank body is divided into the anaerobic reactor that interconnects through separating, anoxic reacter and aerobic membrane bioreactor, have traverse baffle in the described anaerobic reactor, have stirrer in the anoxic reacter, in aerobic membrane reactor, be provided with membrane module and aeration tube, sewage enters described reaction tank body by water inlet pipe, by membrane module through going out water pump water outlet, it is characterized in that: aerobic membrane bioreactor is provided with the excess sludge discharge mouth, by return sludge pump the mud mixed liquid in the described aerobic membrane bioreactor is back to the water return outlet of anaerobic reactor and the water return outlet of anoxic reacter respectively; Top at described anaerobic reactor then is provided with the biogas pipe.
The anaerobic reactor that is adopted in the technology is preferentially selected the anaerobic treatment process that fluidized states such as anaerobe membrane reactor, anaerobic fluidized bed reactor, upflow anaerobic sludge blanket reactor UASB and anaerobic baffled reactor ABR are good, the processing load is high.
Compared with prior art, advantage of the present invention mainly shows: anaerobic treatment is carried out in returned sluge and sewage merging, improve the efficient and the effect of anaerobic treatment, made organic substance in the residual active sludge change into biogas, reduced the growing amount of mud, reduced the secondary pollution of mud; Reduced the volume of Sludge Digestion reaction times and reactor, simplified Sewage Plant sewage, sludge treatment technique, the investment operation cost also further reduces.
Description of drawings
Fig. 1 is a process flow diagram of the present invention;
Fig. 2 is a system architecture synoptic diagram of the present invention.
In the drawings: 1, water inlet pipe, 2, anaerobic reactor, 3, the biogas pipe, 4, anoxic reacter, 5, stirrer, 6, aerobic membrane bioreactor, 7, membrane module, 8, aeration tube, 9, go out water pump, 10, sludge reflux pump, 11, control panel.
Embodiment
As Fig. 1～a kind of sewage shown in Figure 2 and the emission-reducing process and the system of mud worker processing, mainly be made up of anaerobic reactor, anoxic reacter and aerobic membrane bioreactor three parts, utility appliance comprises that oxygen-starved area stirrer, sludge reflux pump, membrane bioreactor go out water pump and self-con-tained unit.Chi Tike adopts materials such as concrete, PVC and glass reinforced plastic, decides on specific requirement.Aerobic membrane bioreactor wherein is provided with the excess sludge discharge mouth, aerobic nitrification mud mixed liquid wherein is back to the water return outlet of anaerobic reactor and anoxic reacter by sludge reflux pump.Anaerobic reactor, anoxic reacter and membrane bioreactor useful volume size are determined that by process object hydraulic detention time is corresponding with the each several part useful volume.For the waste water (COD is below 2000mg/L) of good biodegradability, anaerobism section hydraulic detention time 12-48h, anoxic section 6-12h, membrane bioreactor 6-12h; During startup, should add that ripe anaerobism, aerobic sludge are carried out sludge acclimatization and system starts respectively to anaerobism section, anoxic section and aerobic section.The present invention adopts anaeration in normal temperature technology, and anaerobism section operating temperature maintains 30-35 ℃, and anoxic section and membrane bioreactor operating temperature can guarantee that at 15-30 ℃ system normally moves.The membrane bioreactor membrane module adopts micro-filtration or ultrafiltration hollow-fibre membrane, and air blast is set in the bottom or jet aerator carries out aeration, keeps oxygen supply and cross-flow condition.The film water outlet is by the pump absorption pattern.The membrane bioreactor dissolved oxygen concentration generally is controlled at 2mgL
-1More than; The membrane bioreactor sludge concentration maintains 3000-10000mgL
-1Scope.The mud quantity of reflux that is back to the anaerobism section should keep continuous, constant in principle, and flow equals aerobic section mud proliferative amount.The mud quantity of reflux that is back to the anoxic section is the 50-300% of water flow.Under these conditions, the membrane bioreactor water outlet generally can reach life and use mixedly standard C J/T48-1999, satisfies needs such as irrigation, greening and flushing.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102469742A CN101456627A (en) | 2008-12-29 | 2008-12-29 | Sewage water and sludge co-processing emission-reducing process and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102469742A CN101456627A (en) | 2008-12-29 | 2008-12-29 | Sewage water and sludge co-processing emission-reducing process and system |
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| Publication Number | Publication Date |
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| CN101456627A true CN101456627A (en) | 2009-06-17 |
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| CNA2008102469742A Pending CN101456627A (en) | 2008-12-29 | 2008-12-29 | Sewage water and sludge co-processing emission-reducing process and system |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108000A (en) * | 2011-01-12 | 2011-06-29 | 中国海洋石油总公司 | Biological treatment method of oilfield drilling waste |
| CN102504994A (en) * | 2011-12-19 | 2012-06-20 | 南宁纵联科技有限公司 | Method for preparing fructooligosaccharide by using baffled bioreactor |
| CN102502959A (en) * | 2011-12-20 | 2012-06-20 | 同济大学 | Process for enhancing denitrogenation of membrane bioreactor by anaerobic fermentation acid production |
| CN102515431A (en) * | 2011-12-14 | 2012-06-27 | 郑州大学 | Integrated technology for high efficiency nitrogen and phosphorus removal based on sludge emission reduction and device thereof |
| CN102531311A (en) * | 2012-01-09 | 2012-07-04 | 天津大学 | Method for treating sludge through refluxing of acidified fermentation liquor and application of method |
| CN102765849A (en) * | 2011-05-05 | 2012-11-07 | 天津广聚源纸业有限公司 | Deep treatment method of papermaking wastewater |
| CN102897912A (en) * | 2012-09-12 | 2013-01-30 | 浙江省环境保护科学设计研究院 | System and method for sludge reduction by using lateral bioreactor |
| CN102923917A (en) * | 2012-11-20 | 2013-02-13 | 利尔化学股份有限公司 | Method and system for treating wastewater containing pyridine and pyridine derivatives |
| CN103708675A (en) * | 2013-12-13 | 2014-04-09 | 广东省环境科学研究院 | Landfill leachate treatment method based on high-frequency vibration membrane |
| CN103992015A (en) * | 2014-05-29 | 2014-08-20 | 郑州大学 | Process for improving dewaterability of excess biochemical sludge |
| CN108358314A (en) * | 2018-03-08 | 2018-08-03 | 中国市政工程中南设计研究总院有限公司 | Sludge closes on reflux bioreactor facility in combination and application |
| CN113772820A (en) * | 2021-10-13 | 2021-12-10 | 中广核宏达环境科技有限责任公司 | Device and method for improving sludge concentration of biochemical system and inhibiting sludge bulking |
-
2008
- 2008-12-29 CN CNA2008102469742A patent/CN101456627A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108000B (en) * | 2011-01-12 | 2012-11-14 | 中国海洋石油总公司 | Biological treatment method of oilfield drilling waste |
| CN102108000A (en) * | 2011-01-12 | 2011-06-29 | 中国海洋石油总公司 | Biological treatment method of oilfield drilling waste |
| CN102765849A (en) * | 2011-05-05 | 2012-11-07 | 天津广聚源纸业有限公司 | Deep treatment method of papermaking wastewater |
| CN102515431A (en) * | 2011-12-14 | 2012-06-27 | 郑州大学 | Integrated technology for high efficiency nitrogen and phosphorus removal based on sludge emission reduction and device thereof |
| CN102504994B (en) * | 2011-12-19 | 2014-04-02 | 南宁纵联科技有限公司 | Method for preparing fructooligosaccharide by using baffled bioreactor |
| CN102504994A (en) * | 2011-12-19 | 2012-06-20 | 南宁纵联科技有限公司 | Method for preparing fructooligosaccharide by using baffled bioreactor |
| CN102502959A (en) * | 2011-12-20 | 2012-06-20 | 同济大学 | Process for enhancing denitrogenation of membrane bioreactor by anaerobic fermentation acid production |
| CN102531311A (en) * | 2012-01-09 | 2012-07-04 | 天津大学 | Method for treating sludge through refluxing of acidified fermentation liquor and application of method |
| CN102897912A (en) * | 2012-09-12 | 2013-01-30 | 浙江省环境保护科学设计研究院 | System and method for sludge reduction by using lateral bioreactor |
| CN102923917A (en) * | 2012-11-20 | 2013-02-13 | 利尔化学股份有限公司 | Method and system for treating wastewater containing pyridine and pyridine derivatives |
| CN103708675A (en) * | 2013-12-13 | 2014-04-09 | 广东省环境科学研究院 | Landfill leachate treatment method based on high-frequency vibration membrane |
| CN103992015A (en) * | 2014-05-29 | 2014-08-20 | 郑州大学 | Process for improving dewaterability of excess biochemical sludge |
| CN103992015B (en) * | 2014-05-29 | 2016-02-10 | 河南君和环保科技有限公司 | A kind of technique improving biochemical excess sludge dewatering |
| CN108358314A (en) * | 2018-03-08 | 2018-08-03 | 中国市政工程中南设计研究总院有限公司 | Sludge closes on reflux bioreactor facility in combination and application |
| CN108358314B (en) * | 2018-03-08 | 2023-05-05 | 中国市政工程中南设计研究总院有限公司 | Sludge near reflux bioreactor, combined facility and application thereof |
| CN113772820A (en) * | 2021-10-13 | 2021-12-10 | 中广核宏达环境科技有限责任公司 | Device and method for improving sludge concentration of biochemical system and inhibiting sludge bulking |
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