TW200738570A - Method for treating wastewater - Google Patents

Method for treating wastewater

Info

Publication number
TW200738570A
TW200738570A TW095149028A TW95149028A TW200738570A TW 200738570 A TW200738570 A TW 200738570A TW 095149028 A TW095149028 A TW 095149028A TW 95149028 A TW95149028 A TW 95149028A TW 200738570 A TW200738570 A TW 200738570A
Authority
TW
Taiwan
Prior art keywords
sulfide
polyvalent metal
treating wastewater
sludge
added
Prior art date
Application number
TW095149028A
Other languages
Chinese (zh)
Other versions
TWI441782B (en
Inventor
Kouji Kimura
Hiyori Suzuki
Masanobu Koyama
Original Assignee
Toagosei Co 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 Toagosei Co Ltd filed Critical Toagosei Co Ltd
Publication of TW200738570A publication Critical patent/TW200738570A/en
Application granted granted Critical
Publication of TWI441782B publication Critical patent/TWI441782B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/48—Separation; Purification; Stabilisation; Use of additives
    • C07C67/56—Separation; Purification; Stabilisation; Use of additives by solid-liquid treatment; by chemisorption
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/48—Separation; Purification; Stabilisation; Use of additives
    • C07C67/62—Use of additives, e.g. for stabilisation

Abstract

Disclosed is a method for treating wastewater containing a water-soluble polymerizable organic acid or a polymerization product thereof and polyvalent metal ions. Specifically, a sulfide and/or hydrosulfide of an alkali metal is added into the wastewater, thereby converting the polyvalent metal ions into a sulfide, and then a flocculating agent or a filer aid is added thereinto for forming a sludge containing the sulfide of the polyvalent metal. After that, the sludge is dehydrated by a solid-liquid separator, thereby separating the sulfide of the polyvalent metal from the waster water.
TW95149028A 2005-12-26 2006-12-26 Wastewater treatment methods TWI441782B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005372603 2005-12-26

Publications (2)

Publication Number Publication Date
TW200738570A true TW200738570A (en) 2007-10-16
TWI441782B TWI441782B (en) 2014-06-21

Family

ID=38217971

Family Applications (1)

Application Number Title Priority Date Filing Date
TW95149028A TWI441782B (en) 2005-12-26 2006-12-26 Wastewater treatment methods

Country Status (4)

Country Link
JP (1) JP5223338B2 (en)
CN (1) CN101312914B (en)
TW (1) TWI441782B (en)
WO (1) WO2007074751A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010234205A (en) * 2009-03-30 2010-10-21 Nippon Mining & Metals Co Ltd Method for treating waste hydrofluoric acid
CN102010086B (en) * 2010-12-01 2013-01-09 新疆天业（集团）有限公司 Method for treating mercury-containing wastewater with three-section continuous process
JP6269960B2 (en) * 2014-10-30 2018-01-31 住友金属鉱山株式会社 Cadmium-containing wastewater treatment method
JP6555182B2 (en) * 2016-04-22 2019-08-07 住友金属鉱山株式会社 Wastewater treatment method
KR101717126B1 (en) * 2016-06-28 2017-03-17 효림산업주식회사 Soil Treatment System Using Nanobubble and Multi-Stage Washing of Organic Acid
CN108342575A (en) * 2018-02-22 2018-07-31 中国恩菲工程技术有限公司 The method of enriching Cu from copper-containing solution
CN112390451A (en) * 2020-11-26 2021-02-23 瑞昌荣联环保科技有限公司 Waste water treatment process generated in waste acrylic regeneration and recovery process

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3052714A (en) * 1961-04-04 1962-09-04 Du Pont Process for the purification of liquids
JPS52131649A (en) * 1976-04-27 1977-11-04 Kotobuki Kakoki Method of removing heavy metal in waste liquid
JPS6022997B2 (en) * 1977-05-16 1985-06-05 株式会社日本触媒 How to use wastewater
JPS6133291A (en) * 1984-07-23 1986-02-17 Kurita Water Ind Ltd Treatment of waste water containing heavy metal
JPH01148389A (en) * 1987-12-01 1989-06-09 Kurita Water Ind Ltd Treatment of water containing heavy metal complex
JPH069496A (en) * 1992-04-30 1994-01-18 Dainippon Ink & Chem Inc Production of @(3754/24)meth)acrylic acid esters
JPH06234699A (en) * 1993-02-12 1994-08-23 Dainippon Ink & Chem Inc Production of @(3754/24)meth)acrylic acid esters
TW294658B (en) * 1994-06-02 1997-01-01 Nippon Catalytic Chem Ind
FR2721313B1 (en) * 1994-06-17 1996-07-19 Atochem Elf Sa Process for the production of alkyl acrylates by direct esterification.
DE19929258A1 (en) * 1999-06-25 2000-12-28 Basf Ag Process for the preparation of (meth) acrylic acid esters
US6649787B1 (en) * 1999-10-12 2003-11-18 Nippon Shokubai Co., Ltd. Method for preparing (meth) acrylic acid ester
JP3711229B2 (en) * 2000-06-30 2005-11-02 株式会社日本触媒 Waste liquid treatment method
JP3861603B2 (en) * 2001-02-05 2006-12-20 東亞合成株式会社 Wastewater treatment method
CN1268599C (en) * 2001-12-19 2006-08-09 三菱化学株式会社 Method for producing (meth)acrylic acid

Also Published As

Publication number Publication date
CN101312914B (en) 2012-03-21
JPWO2007074751A1 (en) 2009-06-04
TWI441782B (en) 2014-06-21
CN101312914A (en) 2008-11-26
JP5223338B2 (en) 2013-06-26
WO2007074751A1 (en) 2007-07-05

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