CN101428942A - Novel municipal sewage treatment technology without excess sludge discharge - Google Patents
Novel municipal sewage treatment technology without excess sludge discharge Download PDFInfo
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- CN101428942A CN101428942A CNA2008102341823A CN200810234182A CN101428942A CN 101428942 A CN101428942 A CN 101428942A CN A2008102341823 A CNA2008102341823 A CN A2008102341823A CN 200810234182 A CN200810234182 A CN 200810234182A CN 101428942 A CN101428942 A CN 101428942A
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Abstract
The invention provides a process system for no residual sludge emission in the treatment of municipal sewage, which belongs to a sewage treatment process. The process flow is as follows: the municipal sewage in an adjusting tank orderly is subjected to anoxic biological treatment, microaerophilic biological treatment and aerobic biological treatment, and then orderly undergoes coagulation air-flotation treatment, quartz sand treatment, biological active carbon filtration and subsequent UV sterilization disinfection treatment, and reused as non-potable household water. The process has the advantages of eliminating the odor pollution such as H2S generated in the anaerobic hydrolysis process by the prior A/O method, reducing aeration amount, saving energy consumption, lowering sewage treatment cost, recycling sewage, not causing secondary pollution, completely refluxing the treated system sludge to the anoxic tank, performing the sludge treatment and the sewage biological treatment in the same system, conveniently operating and managing, realizing the residual sludge emission of the system, and improving the discharged water quality of the original treatment system.
Description
Affiliated technical field
The present invention relates to a kind of energy-conservation little oxygen biological treatment combined process system of odorless of municipal sewage treatment and reuse of discharged without residual mud, belong to sewage treatment process.
Background technology
Activated sludge process is the most widely used biologic treating technique of municipal sewage treatment in the world at present, and this method produces a large amount of excess sludges.But excess sludge is disposed treatment process and is had various drawbacks, and therefore, the sludge reduction technology has been subjected to people's attention.At present, being back to biological oxidation systems such as aeration tank after generally by means such as physics, chemistry, biological processes excess sludge being cracked is degraded by microorganisms, thereby the surplus sludge volume that the entire sewage treatment system is outwards discharged reaches minimum, even reach zero release, solve the output of mud from the source, thereby reach the purpose of " green production ".
In biochemical treatment, microorganism can make that organic carbon is converted into inorganics and new organic-biological body in the sewage in metabolic processes.Organic substance wherein is dissolved in the water, formation can by cell utilize again from base matter.Microorganism can make total sludge yield reduce to repeat metabolism from base matter as growth substrate.Owing to be difficult to microorganism the utilization of original matrix in the sewage be distinguished mutually, microorganism utilizes the growth from base matter to be called as recessive growth.There is the scholar to utilize the effect of microorganism recessive growth, set up the running balance that microorganism cells is grown and become feeble and die in the mud.Sludge concentration is kept constant, does not have excess sludge to produce, and reaches the purpose of sludge zero discharge.
There is the complicated food chain and the ecosystem of being made up of various microorganisms in sewage for microorganism provides ideal existence and breeding environment in sewage.According to ecological principle, food chain is long more, and the power loss of this transmittance process is big more, and biological generation is more little.Therefore, promoting the microorganism growth of predator bacteria, increase the length of microorganism food chain in the Sludge System, is the effective ways that reduce sludge yield.In Sludge System, add erythema Piao body worm or adopt earthworm and ecological filter to come mud is carried out the metabolism reinforcement, biological sludge is absorbed in biological wastewater treatment systems, can realize sludge reduction, even zero release.Liang Peng etc. introduce erythema Piao body worm to investigate its growth conditions and to the decrement effect of excess sludge and to the influence of system handles effect in activated sludge reactor.Result of study shows, the sludge yield coefficient under different SRT and the influent load condition becomes negative correlation with the erythema Piao body worm density in the reactor, is 39%～58% to the decrement ratio of excess sludge.Having of erythema Piao body worm is beneficial to the settling property that improves mud, and little to the removal effect influence of COD, ammonia nitrogen, TP.Employing earthworm mud stable bed such as Wu Min are handled excess sludge and have been obtained good effect.The mud stable bed can reach more than 99% the SS clearance of excess sludge, and the COD clearance all can reach about 90%.In secular ecological circulation, the propagation of earthworm and the accumulation of wormcast are not obvious, and have solved the ultimate disposal problem of excess sludge.Han Run equality has been reported the common multiple-hearth ecological filter pilot scale research of forming such as the microfauna that utilizes earthworm.Test-results shows that the effluent characteristics index reaches national grade one discharge standard, and total system does not have excess sludge and produces, and has realized the zero release of excess sludge.
Ruan Zhihua adopts the normal temperature novel process of oxygen acidification hydrolization-biological respinse of holding concurrently, and has solved the problem of the excess sludge that produces in the treatment of Organic Wastewater process, has realized sludge zero discharge.Zhu Zhen is superfine to be used to handle the waste water of Shanghai polyamide fibre factory with aerobic-precipitation-anaerobic activated sludge technology, and excess sludge reaches zero release.Ceng Shaoqiong etc. have reported a kind of ozone oxidation section and new system that can make sludge zero discharge that is called " biological guide " that the biological treatment section is formed by a mud.This system can eliminate remaining mud basically, and effluent quality is good.In the mud of handling and after, approximately be returned to the aeration tank continuously behind the 1d.Wang Baozhen etc. have developed the submerged biofilm sewage disposal technology, and apply it to Fanyu, Guangdong Province city residential district sanitary sewage disposal factory that prays for blessings, the surplus sludge volume that in operational process, produces seldom, and regularly from settling tank to aeration tank front end returned sluge, realized the zero release of mud substantially.This technology has shown advantages such as energy consumption is low, inhibition sludge bulking, raising mud, water sepn effect in the sewage process of handling low organic concentration, for basis of reality has been established in later widespread use.
Sludge disposal and processing are the environmental problems of paying close attention in the world wide, and random discharging not only can cause the waste of the resource and the energy if mud is mishandling, but also can cause environmental pollution, harm humans health.Excess sludge has now entered the minimizing stage after having experienced the stage of innoxious, resource utilization, according to the principle of " cleaner production ", should control from the source the disposal of mud.Though these present technology are the problem of various degrees all, some very promising thinkings are provided for us.Because science and technology improves constantly, energy consumption is big, operating cost is higher, the problems such as corrosion of equipment all are expected to further be solved, so these The Application of Technology prospects are very optimistic.
Summary of the invention
The object of the present invention is to provide a kind of wastewater treatment and reuse new technology of treatment system discharged without residual mud,, realize sludge zero discharge to solve the excess sludge problem that produces in the municipal sewage treatment process.It is to adopt anoxic biological treatment-little oxygen biological treatment-aerobe processing-air supporting-filtration-UV sterilization and disinfection combination process Treating Municipal Sewage, makes it reach reclaimed water matter standard.
Technical solution of the present invention is that municipal effluent enters after equilibrium that equalizing tank carries out water quality, the water yield regulates; enter double oxygen biological hydrolysis, the acidifying that the anoxic biological treatment tank carries out appropriateness by lift pump; waste water outflow enters little oxygen biochemistry pool and carries out biochemical treatment; the water outlet gravity flow enters the aerobic biochemical pond and carries out the aerobic biochemical processing; carrying out coagulation air-float by dosing coagulant then handles; by carrying out reuse after quartz sand filtration and granulated active carbon biological filter and the UV virus killing, reuse water can reach the reclaimed water standard at last.
Method of the present invention and feature thereof are that it is formed by biochemical processing process and the optimum combination of materialization treatment process, and described biochemical processing process is by energy-conservation, the anoxic biological treatment of odorless, the biological treatment of little oxygen and the aerobic biological treatment process integrated integration apparatus of optimum combination successively; It is by as the coagulation air-float of subsequent treatment process with filter quartz sand filtration, granulated active carbon biological filter and the combination successively of UV process for sterilizing that described materialization is handled.When adopting technical process of the present invention to handle, equalizing tank HRT is 8h; Anoxic pond 4～8h; The little oxygen of one-level pond HRT is 3～5h; The little oxygen of secondary pond HRT is 2～3h; One-level Aerobic Pond HRT is 3～5h; Secondary Aerobic Pond HRT is 2～4h.Described biological treatment tank is biological contact oxidation pond, biologic packing material all is installed in the pond, as combined stuffing, elastic solid filler, little oxygen biological tank and aerobic biological tank inner bottom part all are equipped with micro-pore aeration system, and two-stage is divided in little oxygen pond, and DO is controlled at 0.3～0.5mg/L respectively, 0.5～1.0mg/L, two-stage is divided in the aerobic biochemical pond, and DO is controlled at 1.5～2.0mg/L, 2～4mg/L respectively.
In the described follow-up materialization treatment process, coagulating agent aluminium salt is as PAC, Al
2(SO
4)
3The partial reflux pressurized dissolved air flotation is adopted in air supporting; Filter and adopt quartz sand filtration to add the filtration of follow-up granulated active carbon biological filter; Sterilization and disinfection adopts UV254.
The invention has the beneficial effects as follows: (1) anoxic biological treatment residence time appropriateness, can not produce stench, eliminated the H that conventional anaerobic biological treatment occurs
2The S odor pollution; (2) little oxygen biological treatment can not produce odor pollution, has eliminated the stink of anaerobic treatment, compares with aerobic treatment, has reduced aeration rate, has reduced energy consumption; (3) anoxic, little oxygen and aerobic biological treatment process successively optimum combination form, treatment effect is good, organic matter removal efficient height, water outlet can reach national composite wastewater first discharge standard.Disinfect through follow-up air supporting, filtration and UV, quality of reused water standard and requirement are satisfied in water outlet, can be used as reclaimed water; (4) sludge treatment and biological wastewater treatment are combined in same system, convenient operation and management not only, and can improve former processing effluent quality, dispose for the excess sludge that organic waste water produced and opened up new way.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Embodiment
Embodiment 1
Certain municipal wastewater treatment plant sewage, its water quality characteristic is as shown in table 1, adopts Fig. 1 technical process of the present invention to handle.At equalizing tank HRT is 8h; Anoxic pond 4h; The little oxygen of one-level pond HRT is 6h, and DO is 0.3～1mg/L; The little oxygen of secondary pond HRT is 6h, and DO is 0.8～1.5mg/L; One-level Aerobic Pond HRT is 4h, and DO is 1.5～2.0mg/L; Secondary Aerobic Pond HRT is 4h, and DO is 2～4mg/L; Coagulating agent is PAC, and normal operation is handled under the condition of 8～15mg/L, and last water outlet is better than reclaimed water matter standard and requirement through behind quartz sand, activated carbon filtration and the UV sterilization and disinfection successively.Result is shown in Table 1.In addition, there is not H in the treating processes
2Peculiar smell such as S occur, and treatment system is compared energy efficient about 30% with common process.The total reflux of treatment system mud is combined in same system with sludge treatment and biological sewage treatment in anoxic pond, convenient operation and management not only, and system's discharged without residual mud, and improved former processing system effluent quality.
Table 1 municipal effluent matter feature and result (mg/L)
Embodiment 2
Certain biotope sewage, its water quality characteristic is as shown in table 2, adopts Fig. 1 technical process of the present invention to handle.At equalizing tank HRT is 8h; Anoxic pond 4h; The little oxygen of one-level pond HRT is 6h, and DO is 0.3～1mg/L; The little oxygen of secondary pond HRT is 6h, and DO is 0.8～1.5mg/L; One-level Aerobic Pond HRT is 4h, and DO is 1.5～2.0mg/L; Secondary Aerobic Pond HRT is 4h, and DO is 2～4mg/L; Coagulating agent is PAC, and normal operation is handled under the condition of 8～15mg/L, and last water outlet is better than reclaimed water matter standard and requirement through behind quartz sand, activated carbon filtration and the UV sterilization and disinfection successively.Result is shown in Table 1.In addition, there is not H in the treating processes
2Peculiar smell such as S occur, and treatment system is compared energy efficient 30% with common process.The total reflux of treatment system mud is combined in same system with sludge treatment and biological sewage treatment in anoxic pond, convenient operation and management not only, and system's discharged without residual mud, and improved former processing system effluent quality.
Table 1 urban cells sanitary sewage matter feature and result (mg/L)
Claims (6)
1. the process system of a municipal sewage treatment discharged without residual mud, it is to adopt anoxic biological treatment-little oxygen biological treatment-aerobe processing-air supporting-filtration-UV sterilization and disinfection combination process Treating Municipal Sewage, makes it reach reclaimed water matter standard.
2. the method for claim 1 is characterized in that, anoxic pond HRT is 4～8h, only carries out anaerobic hydrolysis, the acidifying of appropriateness, no H
2Stinks such as S produce; Biologic packing material is installed in the pond, as elastic solid filler, combined stuffing, to improve the concentration of anerobe and double oxygen bacterium, is utilized the fs of anaerobic biological to reach the biodegradability that improves waste water, effectively the purpose of degradation of organic substances can avoid anaerobic process to produce H
2Odor pollution control problems such as S are oversimplified control.
3. the method for claim 1 is characterized in that, little oxygen biological treatment divides secondary, all adopts biologic packing material, as elastic solid filler, and combined stuffing and micro-pore aeration system.Wherein the little oxygen of one-level pond HRT is 3～5h, and DO is 0.5～1mg/L; The little oxygen of secondary pond HRT is 2～3h, and DO is 1.0～1.5mg/L.
4. the method for claim 1 is characterized in that, aerobic biological treatment process divides secondary, all adopts biologic packing material, as elastic solid filler, and combined stuffing and micro-pore aeration system.Wherein one-level Aerobic Pond HRT is 3～5h, and DO is 1.5～2.0mg/L; Secondary Aerobic Pond HRT is 2～4h, and DO is 2～4mg/L.
5. the method for claim 1 is characterized in that, the follow-up physicochemical techniques of biological treatment is the combination successively of coagulation air-float and filtration and UV sterilization and disinfection technology.Coagulating agent is selected PAC for use; Partial reflux pressurized dissolved air flotation technology is selected in air supporting for use; Filter and adopt quartz sand filtration, or quartz sand adds follow-up biological activated carbon cascade filtration processing; Adopt the UV technology at last, the sterilization of predominant wavelength 253.7nm uv disinfection reaches the reuse requirement to guarantee stable water outlet.
6. the method for claim 1 is characterized in that, sludge water and mud that biological treatment, coagulation air-float and filtration produce all reflux in anoxic pond, sludge treatment and biological sewage treatment are carried out system's discharged without residual mud at same system.
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| CNA2008102341823A CN101428942A (en) | 2008-11-25 | 2008-11-25 | Novel municipal sewage treatment technology without excess sludge discharge |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102372387A (en) * | 2011-09-30 | 2012-03-14 | 重庆市财信环保投资股份有限公司 | Advanced treatment process of municipal wastewater |
| CN102381814A (en) * | 2011-10-09 | 2012-03-21 | 天津国水设备工程有限公司 | Integrated rural sewage treatment plant |
| CN102515421A (en) * | 2011-11-30 | 2012-06-27 | 张金淮 | Printing and dyeing wastewater recycling system |
| CN102531250A (en) * | 2012-01-06 | 2012-07-04 | 华南再生资源（中山）有限公司 | Sewage treatment system equipment for absolute quantification of sludge and method for recycling sewage |
| CN102815840A (en) * | 2012-08-28 | 2012-12-12 | 贵州泰然环境科技有限责任公司 | Sewage treatment technology suitable for small city |
| RU2490217C2 (en) * | 2011-03-28 | 2013-08-20 | Виктор Сергеевич Гевод | Method of integrated drinking water treatment |
| CN103951037A (en) * | 2014-04-10 | 2014-07-30 | 北京工业大学 | Integrated denitrification method and device by using multi-environment biomembrane-activated sludge system |
| CN107381965A (en) * | 2017-08-31 | 2017-11-24 | 常州道博化工有限公司 | A kind of integrated sewage treating apparatus |
| CN110066831A (en) * | 2019-03-13 | 2019-07-30 | 杭州电子科技大学 | The quick natural pond method processed of kitchen garbage |
| CN110092504A (en) * | 2019-05-20 | 2019-08-06 | 浙江天行健水务有限公司 | A kind of sludge desliming water post-processing approach |
| CN110668667A (en) * | 2019-10-21 | 2020-01-10 | 陕西康惠益佳生物科技有限公司 | Ecological circulation system for harmless resource utilization of urban pipe network sludge |
| CN114873717A (en) * | 2022-05-25 | 2022-08-09 | 无锡千为科技有限公司 | Micro-ecological water purification system and method based on biological nest |
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2008
- 2008-11-25 CN CNA2008102341823A patent/CN101428942A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2490217C2 (en) * | 2011-03-28 | 2013-08-20 | Виктор Сергеевич Гевод | Method of integrated drinking water treatment |
| CN102372387A (en) * | 2011-09-30 | 2012-03-14 | 重庆市财信环保投资股份有限公司 | Advanced treatment process of municipal wastewater |
| CN102381814A (en) * | 2011-10-09 | 2012-03-21 | 天津国水设备工程有限公司 | Integrated rural sewage treatment plant |
| CN102515421A (en) * | 2011-11-30 | 2012-06-27 | 张金淮 | Printing and dyeing wastewater recycling system |
| CN102515421B (en) * | 2011-11-30 | 2013-09-11 | 张金淮 | Printing and dyeing wastewater recycling system |
| CN102531250A (en) * | 2012-01-06 | 2012-07-04 | 华南再生资源（中山）有限公司 | Sewage treatment system equipment for absolute quantification of sludge and method for recycling sewage |
| CN102531250B (en) * | 2012-01-06 | 2013-06-05 | 华南再生资源（中山）有限公司 | Sewage treatment system equipment for absolute quantification of sludge and method for recycling sewage |
| CN102815840A (en) * | 2012-08-28 | 2012-12-12 | 贵州泰然环境科技有限责任公司 | Sewage treatment technology suitable for small city |
| CN103951037A (en) * | 2014-04-10 | 2014-07-30 | 北京工业大学 | Integrated denitrification method and device by using multi-environment biomembrane-activated sludge system |
| CN103951037B (en) * | 2014-04-10 | 2015-11-04 | 北京工业大学 | Utilize multi-environment microbial film-Sludge System integral type denitrogenation method and device |
| CN107381965A (en) * | 2017-08-31 | 2017-11-24 | 常州道博化工有限公司 | A kind of integrated sewage treating apparatus |
| CN110066831A (en) * | 2019-03-13 | 2019-07-30 | 杭州电子科技大学 | The quick natural pond method processed of kitchen garbage |
| CN110092504A (en) * | 2019-05-20 | 2019-08-06 | 浙江天行健水务有限公司 | A kind of sludge desliming water post-processing approach |
| CN110668667A (en) * | 2019-10-21 | 2020-01-10 | 陕西康惠益佳生物科技有限公司 | Ecological circulation system for harmless resource utilization of urban pipe network sludge |
| CN114873717A (en) * | 2022-05-25 | 2022-08-09 | 无锡千为科技有限公司 | Micro-ecological water purification system and method based on biological nest |
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Open date: 20090513 |