• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Activated sludge sewage treatment process comprising aerating a mixed liquor comprising phosphate-containing influent sewage material to cause the microorganisms present to take up phosphate, separating phosphate-enriched sludge from the mixed liquor, and settling the separated sludge in a phosphate stripping zone to form supernatant liquor and settled sludge. At least part of the settled sludge is maintained under anaerobic conditions to cause release of soluble phosphate and the resulting sludge containing released phosphate is contacted with a lower soluble phosphate content medium to effect phosphate enrichment of the supernatant liquor in the stripping zone, with at least a portion of the anaerobic sludge being recirculated to the aeration zone.
    公开号:SU784754A3
    申请号:SU752153105
    申请日:1975-07-11
    公开日:1980-11-30
    发明作者:Виктор Левин Джильберт；Джири Топол Джордж；Грегор Тарнэй Александра
    申请人:Юнион Карбид Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    (54) METHOD OF BIOCHEMICAL CLEANING
    WASTE WATER CONTAINING PHOSPHORUS
    one
    The invention relates to methods for the biochemical treatment of wastewater and can be used, in particular, in the treatment of wastewater containing phosphorus.
    A known method for the biochemical purification of phosphorus-containing wastewater is that the wastewater after primary settling 10 enters the aeration zone, then into the secondary clarifier, from which the phosphate-purified water is removed, and the phosphate-enriched sludge is sent to the tank in which separating the phosphate-rich supernatant from the depleted sludge; the phosphate-rich float layer is treated with settling reagents and settling sediment is fed into the 20 stream before the aeration zone. The degree of purification from phosphates is 80% l.
    This method is the closest to the technical essence and the achieved result to the proposed one.
    In order to increase the degree of phosphorus decontamination, the treatment of phosphate enriched sludge is carried out under anaerobic conditions, preferably 30
    but 25-75% of phosphate-enriched sludge is recycled to the stage of treatment with activated sludge in the aeration tank, and 75-25% to the stage of reagent treatment. In addition, the preferred re-settling time is 2-30 hours. The method is carried out as follows.
    Wastewater: phosphorus-laden, after the primary clarifier, is fed into the aeration tank, and then into the secondary clarifier, from which the purified water is removed, and phosphate-rich sludge is sent to the separator, where the separation takes place within 2-30 hours, for example When mixed with supernatant or gas, oxygen is not contained in the phosphate-rich supernatant from the sludge that is treated under anaerobic conditions. 25-75% of phosphate-enriched sludge is sent to the aeration tank, and 75-25% to the stage of reagent processing.
    Phosphate-enriched sludge, in which phosphorus is found in the cells of microorganisms, is maintained under anaerobic conditions for a time sufficient for these microorganisms
    权利要求:
    Claims (3)
    [1]
    Claim
    1. The method of biochemical treatment | wastewater containing phosphorus, including pre-settling, treatment with activated sludge in aeration tank, re-settling with separation of water from phosphate-rich sludge, further treatment of this sludge with separation of phosphate-rich : pop-up layer from depleted sludge and reagent treatment and settling of the pop-up layer, followed by recycling purified water to the stage of preliminary sedimentation and phosphate-depleted sludge to the stage of treatment with activated sludge, characterized in that, in order to increase the degree of sources from phosphorus, treatment of phosphate-rich sludge is carried out under anaerobic conditions.
    [2]
    2. The method of pop. 1, characterized in that 25-75% of the phosphate-rich sludge is recycled to the active sludge treatment stage in the aeration tank, and 75-25 Gent processing.
    [3]
    3. The method according to PP. 1 ochuyuschim, torah upholding 2-30 hours
    Yaa stage reai 2, about t l ichto, time pov60
    类似技术:
    公开号 | 公开日 | 专利标题
    SU784754A3|1980-11-30|Method of biochemical purification of phosphorus-containing waste water
    US4160724A|1979-07-10|Waste water treatment
    US4460470A|1984-07-17|Process and apparatus for the biological purification of phosphate-containing wastewater
    US4134830A|1979-01-16|Method of purifying waste water
    KR850005378A|1985-08-24|Active sludge
    EP0408878B1|1993-11-10|Enhanced phosphate removal in an activated sludge wastewater treatment process
    US3756946A|1973-09-04|Sewage treatment process
    US2562510A|1951-07-31|Process for sewage treatment
    EP0027998B2|1986-10-15|Process for reabsorption and retention of phosphorus by activated biomass
    US4239620A|1980-12-16|Cyanide removal from wastewaters
    CA1067626A|1979-12-04|Method of purifying waste water
    US3847807A|1974-11-12|Removal of cyanide and color bodies from coke plant wastewater
    EP0822165B1|2004-05-26|Method for the treatment of waste water
    GB1362045A|1974-07-30|Methods of sewage disposal
    GB1399515A|1975-07-02|Method fo biological pruification of sewage
    JP3355121B2|2002-12-09|Organic wastewater treatment method
    JPS571491A|1982-01-06|Disposal of sewage
    US3522171A|1970-07-28|Sewage sludge treatment process
    RU96121913A|1998-12-10|IMPROVED METHOD OF WASTEWATER TREATMENT
    JP2000107797A|2000-04-18|Purification method and apparatus
    JPS59206092A|1984-11-21|Treating process of waste water
    JPH034996A|1991-01-10|Treatment of waste liquid containing high concentration nitrogen and phosphorus
    RU1834859C|1993-08-15|Method for purification of sewage water at cattle-breeding farms "ekotechproekt"
    JPS6150691A|1986-03-12|Treatment of excretion sewage
    SU1502477A1|1989-08-23|Method of refining waste water of wet cleaning system of reaction gases
    同族专利:
    公开号 | 公开日
    US4141822A|1979-02-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    US3236766A|1964-03-31|1966-02-22|Hazleton Lab Inc|Sewage treatment process|
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    US3390077A|1966-05-04|1968-06-25|Fmc Corp|Sewage treatment process|
    US3385785A|1966-05-04|1968-05-28|Fmc Corp|Method of controlling phosphate concentration in sewage treatment systems|
    US3654147A|1971-03-16|1972-04-04|Biospherics Inc|Nitrate removal from sewage|US4271026A|1979-10-09|1981-06-02|Air Products And Chemicals, Inc.|Control of activated sludge wastewater treating process for enhanced phosphorous removal|
    US4257897A|1979-10-26|1981-03-24|Air Products And Chemicals, Inc.|Process for reabsorption and retention of phosphorous by activated biomass|
    DE2944421A1|1979-11-03|1981-05-14|Reinhold Prof. Dr. 3436 Hessisch Lichtenau Kickuth|METHOD FOR BUILDING DEFINED PHOSPHATE DEPOTS FROM WASTE PHOSPHATES|
    JPS5839599B2|1981-04-13|1983-08-31|Ebara Infilco|
    SE441441B|1981-11-24|1985-10-07|Wilhelm Karl Ripl|SET IN A PLANT FOR PURIFICATION OF WASTE WATER OR RAVATTEN ASTADKOMMA A WATER SOLUTION WITH HIGH PHOSPHORES AND RECYCLING OF METAL COMPOUNDS|
    DE3206444A1|1982-02-23|1983-09-01|Linde Ag, 6200 Wiesbaden|METHOD AND DEVICE FOR THE BIOLOGICAL PURIFICATION OF WASTE WATER CONTAINING PHOSPHATE|
    DE3206440A1|1982-02-23|1983-09-01|Linde Ag, 6200 Wiesbaden|METHOD AND DEVICE FOR THE BIOLOGICAL PURIFICATION OF WATER CONTAINING PHOSPHATE|
    US4780208A|1986-08-29|1988-10-25|Botho Bohnke|Process for purification of effluent|
    DE3644770C1|1986-12-30|1988-06-01|Linde Ag|Process for the purification of phosphate-containing waste water by means of biological phosphorus elimination as well as plant for the implementation of this process|
    US5252214A|1987-02-27|1993-10-12|Gunter Lorenz|Biological dephosphatization and nitrification|
    US5022993A|1988-06-02|1991-06-11|Orange Water And Sewer Authority|Process for treating wastewater|
    US4956094A|1988-12-22|1990-09-11|Biospherics Incorporated|Enhanced phosphate removal from bod-containing wastewater|
    DE3907734C1|1989-03-10|1990-10-25|Alwin Eppler|
    JP3048889B2|1995-06-29|2000-06-05|神鋼パンテツク株式会社|Activated sludge treatment method and activated sludge treatment apparatus therefor|
    JP3499151B2|1999-04-19|2004-02-23|久夫 大竹|Sludge treatment method and organic wastewater treatment method including the treatment method|
    US6218174B1|1999-05-12|2001-04-17|Gene E. Keyser|Purification of fluids and control of solute concentrations through selective degasification|
    US8002986B2|2001-03-02|2011-08-23|Daniel R. Miklos|Apparatus and methods for control of waste treatment processes|
    US7854842B2|2001-03-02|2010-12-21|Daniel Robert Miklos|Apparatus and methods for control of waste treatment processes|
    US6660163B2|2001-03-02|2003-12-09|Daniel Robert Miklos|Waste treatment with control over biological solids|
    US7429328B2|2001-03-02|2008-09-30|Advanced Treatment Sciences, Inc.|Apparatus and methods for control of waste treatment processes|
    US7850850B2|2001-03-02|2010-12-14|Daniel Robert Miklos|Apparatus and methods for control of waste treatment processes|
    US6712970B1|2002-01-11|2004-03-30|Enviroquip, Inc.|Sewage treatment process with phosphorus removal|
    US7172699B1|2004-10-13|2007-02-06|Eimco Water Technologies Llc|Energy efficient wastewater treatment for nitrogen and phosphorus removal|
    US7344643B2|2005-06-30|2008-03-18|Siemens Water Technologies Holding Corp.|Process to enhance phosphorus removal for activated sludge wastewater treatment systems|
    CN101300196A|2005-09-02|2008-11-05|西门子水处理技术公司|Screening of inert solids from a low-yield wastewater treatment process|
    US7473364B2|2006-03-07|2009-01-06|Siemens Water Technologies Corp.|Multivalent metal ion management for low sludge processes|
    EP2279152A4|2008-03-28|2012-11-28|Siemens Industry Inc|Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods|
    US8894856B2|2008-03-28|2014-11-25|Evoqua Water Technologies Llc|Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods|
    US8894857B2|2008-03-28|2014-11-25|Evoqua Water Technologies Llc|Methods and systems for treating wastewater|
    US8685247B2|2009-12-03|2014-04-01|Evoqua Water Technologies Llc|Systems and methods for nutrient removal in biological treatment systems|
    CN103068748A|2010-08-18|2013-04-24|西门子工业公司|Contact-stabilization/prime-float hybrid|
    US9359236B2|2010-08-18|2016-06-07|Evoqua Water Technologies Llc|Enhanced biosorption of wastewater organics using dissolved air flotation with solids recycle|
    GB2527989B|2013-05-06|2020-04-22|Evoqua Water Tech Llc|Enhanced biosorption of wastewater organics using dissolved air flotation with solids recycle|
    EP2918552B1|2014-03-10|2017-03-15|Udo Pauly|Method for the separation of solids and recovery of phosphates from aqueous suspensions|
    RU2587181C1|2014-12-22|2016-06-20|Акционерное общество "Институт МосводоканалНИИпроект"|Method for biological treatment of waste water from phosphorus compounds|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US58195175A| true| 1975-06-04|1975-06-04|
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