JPS55126537A - Treating method for sulfate solution containing iron and aluminum - Google Patents

Treating method for sulfate solution containing iron and aluminum

Info

Publication number
JPS55126537A
JPS55126537A JP3176479A JP3176479A JPS55126537A JP S55126537 A JPS55126537 A JP S55126537A JP 3176479 A JP3176479 A JP 3176479A JP 3176479 A JP3176479 A JP 3176479A JP S55126537 A JPS55126537 A JP S55126537A
Authority
JP
Japan
Prior art keywords
gypsum
soln
contg
salt
agent
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.)
Granted
Application number
JP3176479A
Other languages
Japanese (ja)
Other versions
JPS5815444B2 (en
Inventor
Yujiro Sugawara
Kaichiro Miyazawa
Yoshibumi Noshi
Kotaro Igarashi
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.)
Mizusawa Industrial Chemicals Ltd
Original Assignee
Mizusawa Industrial Chemicals 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 Mizusawa Industrial Chemicals Ltd filed Critical Mizusawa Industrial Chemicals Ltd
Priority to JP54031764A priority Critical patent/JPS5815444B2/en
Publication of JPS55126537A publication Critical patent/JPS55126537A/en
Publication of JPS5815444B2 publication Critical patent/JPS5815444B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

PURPOSE: To obtain pure gypsum and snow-white Al(OH)3 from a sulfate soln. contg. Fe and Al by adding CaC2 or Ca(NO3)2 to the soln.; separating gypsum formed; adding a Ca type neutralizing agent to the gypsum-free soln.; and separating Fe and Al hydroxides.
CONSTITUTION: To a sulfate soln. contg. Fe and Al, e.g., waste sulfuric acid used to treat acidic clay is added a Ca salt of a monobasic mineral acid, e.g., CaCl2, and gypsum formed is separated. A Ca type neutralizing agent such as clay lime sludge having a CaO to SiO2 wt. ratio of 0.5W4 is added to the resulting mineral acid salt soln. contg. Fe and Al to precipitation-separate the Fe at pH 2W3.5, and by further adding the agent the Al is precipitated at pH≥3.6. Thus, pure gypsum with value in use and Al(OH)3 suitable for use as a water purifying agent, a flame retarder, etc. are obtd. from waste acid, and Ca salt formed by removing the Fe and Al can be recycled for gypsum separation.
COPYRIGHT: (C)1980,JPO&Japio
JP54031764A 1979-03-20 1979-03-20 Method for treating sulfate solutions containing iron and aluminum Expired JPS5815444B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54031764A JPS5815444B2 (en) 1979-03-20 1979-03-20 Method for treating sulfate solutions containing iron and aluminum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54031764A JPS5815444B2 (en) 1979-03-20 1979-03-20 Method for treating sulfate solutions containing iron and aluminum

Publications (2)

Publication Number Publication Date
JPS55126537A true JPS55126537A (en) 1980-09-30
JPS5815444B2 JPS5815444B2 (en) 1983-03-25

Family

ID=12340094

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54031764A Expired JPS5815444B2 (en) 1979-03-20 1979-03-20 Method for treating sulfate solutions containing iron and aluminum

Country Status (1)

Country Link
JP (1) JPS5815444B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2761357A1 (en) * 1997-03-28 1998-10-02 Tredi New process for the recovery of purified gypsum product
CN109081621A (en) * 2018-10-19 2018-12-25 昂星新型碳材料常州有限公司 The processing method and application, cement retarder and cement of waste liquid in graphite oxide/graphene production

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2761357A1 (en) * 1997-03-28 1998-10-02 Tredi New process for the recovery of purified gypsum product
CN109081621A (en) * 2018-10-19 2018-12-25 昂星新型碳材料常州有限公司 The processing method and application, cement retarder and cement of waste liquid in graphite oxide/graphene production

Also Published As

Publication number Publication date
JPS5815444B2 (en) 1983-03-25

Similar Documents

Publication Publication Date Title
JPS55126537A (en) Treating method for sulfate solution containing iron and aluminum
KR100239916B1 (en) Immobilization of metal contaminants from a liquid to a solid medium
JPS5518210A (en) Sludge solidification treating agent
JPS5721989A (en) Treating method for waste water of grout injecting method
JPS55144412A (en) Treatment of aluminum sludge
JPS55116489A (en) Treating method for waste liquid of acid washing
JPS55114388A (en) Clarifying treatment of waste water
ES8406384A1 (en) Process for sea water treatment
JPS5399656A (en) Method of purifying suspended waste water
JPS5641815A (en) Purifying method for wet process phosphoric acid solution
JPS6411700A (en) Sewage sludge solidifying material
JPS5554088A (en) Treatment method of chemical washing waste water
JPS547760A (en) Method of purifying coil containing waste water
JPS5659606A (en) Purifying method for aqueous acidic solution containing h2so4
JPS5478398A (en) Production of purified salt water
JPS571498A (en) Disposal of cod-contng. waste water
JPS54133499A (en) Production of white gypsum
PL299939A1 (en) Admixtures used for solidification of sludges as well as method of solidifying and method of conditioning sludges
JPS5738985A (en) Treatment of waste containing fluorine and phosphoric acid
JPS5722107A (en) Preparation of phosphoric acid by wet method
JPS55104692A (en) Purifying treatment of fluorine-containing waste water
JPS5524533A (en) Treating method for oil-containing waste water containing iron powder and suspended matter
KR870004910A (en) Treatment of Impure Water
JPS5511016A (en) Waste water treating method
JPS56163796A (en) Treatment of cod-containing sewage