JPS57136996A - Treatment of waste water - Google Patents

Treatment of waste water

Info

Publication number
JPS57136996A
JPS57136996A JP2334981A JP2334981A JPS57136996A JP S57136996 A JPS57136996 A JP S57136996A JP 2334981 A JP2334981 A JP 2334981A JP 2334981 A JP2334981 A JP 2334981A JP S57136996 A JPS57136996 A JP S57136996A
Authority
JP
Japan
Prior art keywords
tank
waste water
accomplished
iron
iron salt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2334981A
Other languages
Japanese (ja)
Inventor
Tetsuro Fukase
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kurita Water Industries Ltd
Original Assignee
Kurita Water Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kurita Water Industries Ltd filed Critical Kurita Water Industries Ltd
Priority to JP2334981A priority Critical patent/JPS57136996A/en
Publication of JPS57136996A publication Critical patent/JPS57136996A/en
Pending legal-status Critical Current

Links

Classifications

    • Y02W10/12—

Landscapes

  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

PURPOSE: To improve the floc separability in a settling tank and to perform returning of sludge into an aerobic tank sufficiently by adding an iron salt to waste water such as waste water of stack gas desulfurization, and forming S2-, HS-, H2S, etc. in an anaerobic treatment process.
CONSTITUTION: In an anaerobic treatment stage, part of waste water 5 is introduced together with the return sludge 6 from a settling tank 2 into an anaerobic tank 1, where an iron salt 7 is added and an anaerobic treatment is accomplished. Iron chloridge, iron sulfide, etc. are usable for the iron salt, and sulfuric acid reducing facteria are made dominant by the addition thereof, whereby the S2O6 2- in the waste water is reduced to S2-. Mixed liquid in the tank 1 are withdrawn slightly each time, and are subjected to solid-liquid separation in the tank 2. The solids are returned as the return sludge 6 into the tank 1, and the supernatant is introduced into an aeration tank 3 as the stage of the next step, where an anerobic treatment is accomplished. In the tank 3, part of the waste water 5 and the return sludge 8 are introduced and air 9 is diffused, whereby aeration by mixing is accomplished.
COPYRIGHT: (C)1982,JPO&Japio
JP2334981A 1981-02-19 1981-02-19 Treatment of waste water Pending JPS57136996A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2334981A JPS57136996A (en) 1981-02-19 1981-02-19 Treatment of waste water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2334981A JPS57136996A (en) 1981-02-19 1981-02-19 Treatment of waste water

Publications (1)

Publication Number Publication Date
JPS57136996A true JPS57136996A (en) 1982-08-24

Family

ID=12108101

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2334981A Pending JPS57136996A (en) 1981-02-19 1981-02-19 Treatment of waste water

Country Status (1)

Country Link
JP (1) JPS57136996A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59115798A (en) * 1982-12-24 1984-07-04 Niigata Eng Co Ltd Treatment of organic treating material subjected to wet oxidation or heat treatment
JPS60227893A (en) * 1984-04-11 1985-11-13 プラク・アクツエブラ−グ Treatment of waste water
US4632759A (en) * 1984-04-11 1986-12-30 Purac Aktiebolag Wastewater treatment method
JPH01224096A (en) * 1988-03-04 1989-09-07 Kurita Water Ind Ltd Treatment of organic waste water
JPH04310293A (en) * 1991-04-09 1992-11-02 Ebara Infilco Co Ltd Upflow anaerobic sludge blanket process
WO2005007588A1 (en) * 2003-07-16 2005-01-27 Ebara Corporation Method and apparatus for anaerobic treatment of wastewater containing sulfur compound
WO2006066018A3 (en) * 2004-12-14 2007-02-08 Shaw Intelectual Property Hold System for wastewater treatment and digestion having aerobic and anaerobic treatment zones

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59115798A (en) * 1982-12-24 1984-07-04 Niigata Eng Co Ltd Treatment of organic treating material subjected to wet oxidation or heat treatment
JPS6325839B2 (en) * 1982-12-24 1988-05-26 Niigata Engineering Co Ltd
JPS60227893A (en) * 1984-04-11 1985-11-13 プラク・アクツエブラ−グ Treatment of waste water
US4614587A (en) * 1984-04-11 1986-09-30 Purac Aktiebolag Wastewater treatment method
US4632759A (en) * 1984-04-11 1986-12-30 Purac Aktiebolag Wastewater treatment method
JPH01224096A (en) * 1988-03-04 1989-09-07 Kurita Water Ind Ltd Treatment of organic waste water
JPH04310293A (en) * 1991-04-09 1992-11-02 Ebara Infilco Co Ltd Upflow anaerobic sludge blanket process
WO2005007588A1 (en) * 2003-07-16 2005-01-27 Ebara Corporation Method and apparatus for anaerobic treatment of wastewater containing sulfur compound
JPWO2005007588A1 (en) * 2003-07-16 2006-08-31 株式会社荏原製作所 Method and apparatus for anaerobic treatment of wastewater containing sulfur compounds
US7427357B2 (en) 2003-07-16 2008-09-23 Ebara Corporation Process and apparatus for anaerobic treatment of sulfur compound-containing wastewater
JP4611204B2 (en) * 2003-07-16 2011-01-12 荏原エンジニアリングサービス株式会社 Method and apparatus for anaerobic treatment of wastewater containing sulfur compounds
WO2006066018A3 (en) * 2004-12-14 2007-02-08 Shaw Intelectual Property Hold System for wastewater treatment and digestion having aerobic and anaerobic treatment zones
US7402247B2 (en) 2004-12-14 2008-07-22 Shaw Intellectual Property Holdings, Inc. System for wastewater treatment and digestion having aerobic and anaerobic treatment zones

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