CN101125721A - Technique for reusing sewage - Google Patents
Technique for reusing sewage Download PDFInfo
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- CN101125721A CN101125721A CNA2006100413758A CN200610041375A CN101125721A CN 101125721 A CN101125721 A CN 101125721A CN A2006100413758 A CNA2006100413758 A CN A2006100413758A CN 200610041375 A CN200610041375 A CN 200610041375A CN 101125721 A CN101125721 A CN 101125721A
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Abstract
The invention relates to a novel technique to apply membrance technique in sewage treatment, which is applied to waste water treatment and reuse field in environment engineering. The invention is characterized in that: firstly, the waste water is pretreated, then passes through anaerobic/anoxic/oxic (A/A/O) treatment sections, and then biologically decomposed and mud-water separated are carried out through a membrance biological reactor (MBR), and the waste water is disinfected after passing through a revere osmosis (RO) system. The invention has higher denitrification and phophrous removal effect with a total denitrificatin ratio as high as 99 percent and a total phophrous removal ratio as high as 99.5 percent. The final discharged waste water after the treatment can meet the Health Standard for Domestic Drinking Water of China (GB5749-85); the sludge concentration in a biological reaction tank is as high as 15-20g/l. The sludge production of the invention is low, the technical process of the invention is simple and is suitable for being PLC controlled; a secondary sedimentation tank is not needed in the system, and the occupying area is small.
Description
Technical field
The present invention relates to the new technology of a kind of application of membrane, be applicable to sewage disposal and reuse field in the environmental engineering in sewage disposal.
Background technology
China's shortage of water resources.2200 cubic metres of China's water resources ownership per capita less thaies only are 1/4 of world average level; Northern area has only 990 cubic metres per capita, less than 1/8 of world average.It is predicted, China's population will reach peak value 1,600,000,000 about the year two thousand thirty, taking into full account under the situation of water saving, estimate that water total amount is 7,000 hundred million～8000 billion cubic meters when the time comes, and the water resources quantity of national actual capabilities utilization is about 8,000 hundred million～9000 billion cubic meters, and the further development difficulty of water resources is very big.
Reusing sewage has a high potential.The country that water resourcess such as developed country such as the U.S., Japan and Israel are extremely poor begins to carry out municipal sewage treatment, the enforcement of middle water reuse project the sixties.The sanitary sewage of Israel 100%, 72% municipal sewage treatment reuse now, the U.S., Japanese sanitary sewage, urban sewage recycling rate all reach more than 70%.At present, China's municipal effluent annual emissions is greatly about 414 billion cubic meters, and the centralized treatment of urban sewage rate will reach 45%.If the reusing sewage rate on average reaches 40%, then the reusing sewage amount can reach 80 billion cubic meters, just can solve the National urban water shortage problem.
At the great potential of China's shortage of water resources problem and reusing sewage, numerous sewage recycling process biological treatments arise at the historic moment.The more biological treatment flow process of current application is:
Sewage → pre-treatment → biological treatment → sand filtration/charcoal absorption → sterilization → water outlet
Bioremediation in the above-mentioned technology has place not fully up to expectations.The biological treatment technology such as oxidation ditch, anaerobic/anoxic/aerobic (A/A/O), sequence bioreactor (SBR), conventional biological second-stage treatment that adopt more.The denitrogenation dephosphorizing effect of these technologies is obvious, but the floor space of these technologies is big, and because the delivery turbidity height causes the subsequent disposal expense to increase.Membrane bioreactor (MBR) technology as current emerging technology also is used to biological treatment, and this technology floor space is little, sludge concentration height, anti-shock loading, but because undesirable the narrow of its range of application that cause of denitrogenation dephosphorizing effect.Also there is more defective in the aftertreatment section of water reuse in sand filtration/charcoal absorption conduct.In operational process, the replacing frequency height of sand and gac; Operation, maintenance process more complicated need a large amount of specialized personnel, thereby expend great amount of manpower and material resources.Therefore, seeking a kind of engineering that meets uses actual; Has the high processing effect; It is comparatively urgent for current situation to be convenient to the middle water process of reusing operating, safeguard again.
Summary of the invention
The purpose of this invention is to provide a kind of technique for reusing sewage that can overcome existing problem in existing application and the reusing sewage biological treatment.
The object of the invention realizes by following measure:
Technical process is:
Sewage → pre-treatment → anaerobic/anoxic/aerobic (A/A/O) → membrane bioreactor (MBR) → reverse osmosis (RO) → sterilization → water outlet
The present invention passes through: pre-processing device, A/A/O+MBR system, RO system, sterilization equipment are formed a cover waste water treating and reutilizing process jointly.
Pre-processing device among the present invention: similar with the sewage disposal pretreatment technology of routine, its objective is to be used for removing the undissolved macrobead pollutent of sewage the normal operation of protection follow-up equipment.
Anaerobic/anoxic among the present invention/aerobic (A/A/O) system: comprise at least one anaerobic pond (Anaerobic), at least one anoxic pond (Anoxic), at least one Aerobic Pond (Oxic).In this cover system, phosphorus is released in anaerobic pond, by taken in excess, reaches the removal of phosphorus by spoil disposal in Aerobic Pond; By nitrated, by denitrification, the diffusion by gas reaches removing of nitrogen to nitrogen in anoxic pond in Aerobic Pond.
Membrane bioreactor among the present invention (MBR): comprise at least one MBR reaction tank; In actual through engineering approaches was used, this MBR reaction tank can be combined into a pond with the Aerobic Pond in anaerobic/anoxic/aerobic (A/A/O) system, also can separately build.Membrane bioreactor (MBR) is to place the membrane module of some amount at interval in the aerated reaction groove, and film can be ultra-filtration membrane or microfiltration membrane.The below is provided with the waste disposal plant of aerator, can carry out aerobe reaction and membrane sepn simultaneously.The number needs of membrane module is determined according to parameters such as waste water situation, running statuses.
Reverse osmosis among the present invention (RO) system: utilize reverse osmosis membrane with the particle of holding back being partly dissolved property, COD, nitrogen, phosphorus etc., guarantee the treatment effect of membrane bioreactor effectively; RO concentrated solution among the present invention is back to raw water inlet, reenters reactive system, to reduce second environmental pollution.
Sterilization equipment among the present invention: similar with the sterilization equipment of routine, be used for sterilization, the sterilization of reverse osmosis water outlet.System's water outlet after the sterilization can reach China's " drinking water sanitary standard " (GB5749-85), but direct reuse.
The invention has the advantages that: technology has higher denitrogenation dephosphorizing effect, and nitrogen removal rate reaches 99%, and total tp removal rate reaches 99.5%; System's final outflow water reaches China's " drinking water sanitary standard " (GB5749-85); Sludge concentration in the biological reaction tank can reach 15-20g/l, and sludge yield is low; Technical process is simple, is fit to adopt PLC control; Do not establish second pond in the system, floor space is little.
Below in conjunction with a concrete case study on implementation, further specify technology of the present invention, but the described concrete equipment of case study on implementation not the qualification to technology of the present invention.
Description of drawings
Fig. 1 is typical process flow figure of the present invention
Fig. 2 is a invention process case process flow sheet
Embodiment
Case study on implementation: referring to Fig. 2, the present invention tests treatment capacity by 2m
3/ h design; Anaerobic pond, anoxic pond, Aerobic Pond cumulative volume 12m
3MBR pond volume 5m
3RO processing power 2m
3/ h; Hydraulic detention time HRT=6h.Disposition is as shown in table 1.Remove cited pollutent in the table 1, other contamination indexs all reach " drinking water sanitary standard " (GB5749-85).
Inlet and outlet water water quality in table 1 test
| Project | Influent concentration (mg/l) | Go out water concentration (mg/l) | Clearance (%) |
| CODcr (chemical oxygen demand (COD)) | 450 | 2.2 | 99.5 |
| TN (total nitrogen) | 65 | 0.5 | 99.2 |
| TP (total phosphorus) | 12 | 0.05 | 99.5 |
Claims (4)
1. waste water treating and reutilizing process, it is characterized in that sewage at first carries out pre-treatment, then by anaerobic/anoxic/aerobic (A/A/O) processing section, again by membrane bioreactor (MBR) biodegrade and mud-water separation, water outlet by reverse osmosis (RO) system after disinfection.
2. waste water treating and reutilizing process as claimed in claim 1, it is characterized in that said anaerobic/anoxic/aerobic (A/A/O) and membrane bioreactor (MBR), aerobic section can be merged at least one pond with membrane bioreactor, also can be divided at least two ponds separately.
3. waste water treating and reutilizing process as claimed in claim 1 or 2 is characterized in that said membrane bioreactor, and used film is ultra-filtration membrane or microfiltration membrane.
4. waste water treating and reutilizing process as claimed in claim 1 is characterized in that said reverse osmosis concentrated liquid is back to sewage inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100413758A CN101125721A (en) | 2006-08-18 | 2006-08-18 | Technique for reusing sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100413758A CN101125721A (en) | 2006-08-18 | 2006-08-18 | Technique for reusing sewage |
Publications (1)
| Publication Number | Publication Date |
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| CN101125721A true CN101125721A (en) | 2008-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2006100413758A Pending CN101125721A (en) | 2006-08-18 | 2006-08-18 | Technique for reusing sewage |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101279794B (en) * | 2008-04-18 | 2010-04-14 | 清华大学 | Enhanced endogenous denitrification process and device for denitrification and phosphorus removal by using film-bioreactor |
| CN101209886B (en) * | 2006-12-26 | 2010-09-01 | 蓝星环境工程有限公司 | Advanced treatment recycling technique of urban sewage |
| CN101980969A (en) * | 2008-03-28 | 2011-02-23 | 西门子水处理技术公司 | Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods |
| CN101402509B (en) * | 2008-11-21 | 2011-07-27 | 北京桑德环境工程有限公司 | Treatment system and method for high-salt wastewater |
| CN102329044A (en) * | 2011-08-03 | 2012-01-25 | 浙江大学 | Method for treating wastewater from bamboo product |
| CN102381804A (en) * | 2010-09-01 | 2012-03-21 | 东丽纤维研究所（中国）有限公司 | Process for recycling printing and dyeing wastewater |
| CN101607778B (en) * | 2009-08-06 | 2012-05-23 | 北京师范大学 | Water body purifying method of A<2>/O artificial floating island |
| CN102826725A (en) * | 2012-09-20 | 2012-12-19 | 江苏艾特克环境工程有限公司 | Coal mine wastewater membrane treatment device and method |
| CN103241898A (en) * | 2013-05-03 | 2013-08-14 | 北京九大洋水处理技术有限责任公司 | Wastewater treating method and system |
| CN103304091A (en) * | 2012-03-14 | 2013-09-18 | 株式会社东芝 | Ultrafiltration system |
| CN103819049A (en) * | 2013-12-23 | 2014-05-28 | 桑德集团有限公司 | Sewage treatment method and system |
| CN107265752A (en) * | 2017-05-25 | 2017-10-20 | 中国石油化工股份有限公司 | A kind of Gas production wastewater desulfurization purification pretreatment technology |
| CN108623012A (en) * | 2018-04-11 | 2018-10-09 | 南京大学 | A kind of iron ion fortified Anammox denitrification process |
| CN109354312A (en) * | 2018-11-13 | 2019-02-19 | 肖江江 | Wastewater treatment equipment is used in a kind of production of liquid crystal display |
| CN110642378A (en) * | 2019-09-29 | 2020-01-03 | 北交源生态环境科技(北京)有限公司 | Oxygen-enriched MBBR sewage treatment system and sewage treatment method |
| CN110642379A (en) * | 2019-09-29 | 2020-01-03 | 北交源生态环境科技(北京)有限公司 | Novel municipal sewage process with nitrogen and phosphorus removal functions |
| CN111039514A (en) * | 2019-12-31 | 2020-04-21 | 刁长森 | Integrated domestic sewage ecological cycle application system device and treatment method thereof |
| CN112093973A (en) * | 2020-06-29 | 2020-12-18 | 浙江浙能嘉华发电有限公司 | Method and equipment for treating coal-fired sludge coupling wastewater of thermal power plant |
| CN113072180A (en) * | 2021-03-25 | 2021-07-06 | 西安科技大学 | Constant-flow water inlet equipment, sewage biochemical treatment system adopting same and operation control method |
-
2006
- 2006-08-18 CN CNA2006100413758A patent/CN101125721A/en active Pending
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101209886B (en) * | 2006-12-26 | 2010-09-01 | 蓝星环境工程有限公司 | Advanced treatment recycling technique of urban sewage |
| CN101980969A (en) * | 2008-03-28 | 2011-02-23 | 西门子水处理技术公司 | Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods |
| CN101279794B (en) * | 2008-04-18 | 2010-04-14 | 清华大学 | Enhanced endogenous denitrification process and device for denitrification and phosphorus removal by using film-bioreactor |
| CN101402509B (en) * | 2008-11-21 | 2011-07-27 | 北京桑德环境工程有限公司 | Treatment system and method for high-salt wastewater |
| CN101607778B (en) * | 2009-08-06 | 2012-05-23 | 北京师范大学 | Water body purifying method of A<2>/O artificial floating island |
| CN102381804A (en) * | 2010-09-01 | 2012-03-21 | 东丽纤维研究所（中国）有限公司 | Process for recycling printing and dyeing wastewater |
| CN102329044B (en) * | 2011-08-03 | 2013-11-13 | 浙江大学 | Method for treating wastewater from bamboo product |
| CN102329044A (en) * | 2011-08-03 | 2012-01-25 | 浙江大学 | Method for treating wastewater from bamboo product |
| CN103304091A (en) * | 2012-03-14 | 2013-09-18 | 株式会社东芝 | Ultrafiltration system |
| CN102826725A (en) * | 2012-09-20 | 2012-12-19 | 江苏艾特克环境工程有限公司 | Coal mine wastewater membrane treatment device and method |
| CN103241898A (en) * | 2013-05-03 | 2013-08-14 | 北京九大洋水处理技术有限责任公司 | Wastewater treating method and system |
| CN103819049A (en) * | 2013-12-23 | 2014-05-28 | 桑德集团有限公司 | Sewage treatment method and system |
| CN103819049B (en) * | 2013-12-23 | 2016-06-29 | 桑德集团有限公司 | A kind of sewage water treatment method and system |
| CN107265752B (en) * | 2017-05-25 | 2021-05-11 | 中国石油化工股份有限公司 | Gas production wastewater desulfurization purification pretreatment process |
| CN107265752A (en) * | 2017-05-25 | 2017-10-20 | 中国石油化工股份有限公司 | A kind of Gas production wastewater desulfurization purification pretreatment technology |
| CN108623012A (en) * | 2018-04-11 | 2018-10-09 | 南京大学 | A kind of iron ion fortified Anammox denitrification process |
| CN109354312A (en) * | 2018-11-13 | 2019-02-19 | 肖江江 | Wastewater treatment equipment is used in a kind of production of liquid crystal display |
| CN110642379A (en) * | 2019-09-29 | 2020-01-03 | 北交源生态环境科技(北京)有限公司 | Novel municipal sewage process with nitrogen and phosphorus removal functions |
| CN110642378A (en) * | 2019-09-29 | 2020-01-03 | 北交源生态环境科技(北京)有限公司 | Oxygen-enriched MBBR sewage treatment system and sewage treatment method |
| CN111039514A (en) * | 2019-12-31 | 2020-04-21 | 刁长森 | Integrated domestic sewage ecological cycle application system device and treatment method thereof |
| CN112093973A (en) * | 2020-06-29 | 2020-12-18 | 浙江浙能嘉华发电有限公司 | Method and equipment for treating coal-fired sludge coupling wastewater of thermal power plant |
| CN113072180A (en) * | 2021-03-25 | 2021-07-06 | 西安科技大学 | Constant-flow water inlet equipment, sewage biochemical treatment system adopting same and operation control method |
| CN113072180B (en) * | 2021-03-25 | 2023-04-14 | 西安科技大学 | Operation control method of sewage biochemical treatment system |
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