JPS5442848A - Method of treating blast furnace slag leached water - Google Patents

Method of treating blast furnace slag leached water

Info

Publication number
JPS5442848A
JPS5442848A JP10877177A JP10877177A JPS5442848A JP S5442848 A JPS5442848 A JP S5442848A JP 10877177 A JP10877177 A JP 10877177A JP 10877177 A JP10877177 A JP 10877177A JP S5442848 A JPS5442848 A JP S5442848A
Authority
JP
Japan
Prior art keywords
aqua regia
water
reducing
leached
cod
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
JP10877177A
Other languages
Japanese (ja)
Inventor
Atsuko Mogi
Yoshihisa Kono
Toshihiko Hata
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.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP10877177A priority Critical patent/JPS5442848A/en
Publication of JPS5442848A publication Critical patent/JPS5442848A/en
Pending legal-status Critical Current

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  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

PURPOSE: To reduce COD, by oxidizing oxygen acid with reducing 52- and S after treating up to the maximum potential of aqua regia by adding sodium hypochloride.
CONSTITUTION: Blast furnace slag is leached by cooling water, rain water, etc., and the leached water is yellow and its COD and pH value are high. Oxygen acid with reducing S2- and S is oxidized by adding sodium hypochloride to the aqua regia near the maximum potential of the aqua regia, the maximum value of the oxidation- reduction potential of thiosulfate ions in the aqua regia, thus reducing COD loads while eliminating yellow color. Free S precipitating at that time is filtered and leached water is drained under a condition that fits the drainage standard. It depends upon the fact that the patterns of oxidation-reduction potentials in the case when sodium hypochloride is added to each of aqua regia and S2 O2-3 in aqua regia resemble extremely close and both maximum values also agree approximately
COPYRIGHT: (C)1979,JPO&Japio
JP10877177A 1977-09-12 1977-09-12 Method of treating blast furnace slag leached water Pending JPS5442848A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10877177A JPS5442848A (en) 1977-09-12 1977-09-12 Method of treating blast furnace slag leached water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10877177A JPS5442848A (en) 1977-09-12 1977-09-12 Method of treating blast furnace slag leached water

Publications (1)

Publication Number Publication Date
JPS5442848A true JPS5442848A (en) 1979-04-05

Family

ID=14493064

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10877177A Pending JPS5442848A (en) 1977-09-12 1977-09-12 Method of treating blast furnace slag leached water

Country Status (1)

Country Link
JP (1) JPS5442848A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4470446A (en) * 1980-07-09 1984-09-11 Kabushiki Kaisha Kobe Seiko Sho Method and apparatus for detecting molten metal surface level in a mold
JP2005104903A (en) * 2003-09-30 2005-04-21 Denki Kagaku Kogyo Kk Chalk removal material, bath material, and artificial hot spring using the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4470446A (en) * 1980-07-09 1984-09-11 Kabushiki Kaisha Kobe Seiko Sho Method and apparatus for detecting molten metal surface level in a mold
JP2005104903A (en) * 2003-09-30 2005-04-21 Denki Kagaku Kogyo Kk Chalk removal material, bath material, and artificial hot spring using the same

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