JPS5535917A - Treatment and treating agent for water contaminated by hexavalent chromium - Google Patents

Treatment and treating agent for water contaminated by hexavalent chromium

Info

Publication number
JPS5535917A
JPS5535917A JP10856878A JP10856878A JPS5535917A JP S5535917 A JPS5535917 A JP S5535917A JP 10856878 A JP10856878 A JP 10856878A JP 10856878 A JP10856878 A JP 10856878A JP S5535917 A JPS5535917 A JP S5535917A
Authority
JP
Japan
Prior art keywords
gypsum
water
reducing agent
weight
mold
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
JP10856878A
Other languages
Japanese (ja)
Other versions
JPS6234433B2 (en
Inventor
Tomizo Ono
Katsumi Fujishima
Akitomi Takano
Nobuaki Sakamaki
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.)
Nichireki Kagaku Kogyo Co Ltd
Original Assignee
Nichireki Kagaku Kogyo 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 Nichireki Kagaku Kogyo Co Ltd filed Critical Nichireki Kagaku Kogyo Co Ltd
Priority to JP10856878A priority Critical patent/JPS5535917A/en
Publication of JPS5535917A publication Critical patent/JPS5535917A/en
Publication of JPS6234433B2 publication Critical patent/JPS6234433B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Removal Of Specific Substances (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

PURPOSE: Reduction of continuously hexavalent chromium in contaminated water to insoluble state by mixing inorganic reducing agent, as treating agent, such as ferrous sulfate, etc. with gypsum and water to solidify and mold, and passing the contaminated water through packed pits.
CONSTITUTION: An inorganic reducing agent such as ferrous sulfate, sodium sulfite, sodium bisulfite, etc. is mixed with gypsum and water in a mixing ratio of the reducing agent to the gypsum of 50:50 to 90:10 and in a amount of 40 parts by weight of water per 50 parts by weight of gypsum. If necessary, a resin emulsion such as petroleum resin, rosin, etc., bitumen emulsion such as asphalt, tar, etc. and natural or synthetic rubber latex are mixed in a amoumt of 10% by weight of each based on the combined weight of the reducing agent and gypsum. The resulting mixture is placed into a mold such as a container and released from the mold. The resulting molded article is crushed to form masses weighing 1W10kg. Baskets are filled with the obtained treating agent and placed in a pit or pits arranged in waterway to use. The water contaminated by hexavalent chromium flowing out from disposal place of chromium slag is everlastingly treated to reduce the chromium.
COPYRIGHT: (C)1980,JPO&Japio
JP10856878A 1978-09-06 1978-09-06 Treatment and treating agent for water contaminated by hexavalent chromium Granted JPS5535917A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10856878A JPS5535917A (en) 1978-09-06 1978-09-06 Treatment and treating agent for water contaminated by hexavalent chromium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10856878A JPS5535917A (en) 1978-09-06 1978-09-06 Treatment and treating agent for water contaminated by hexavalent chromium

Publications (2)

Publication Number Publication Date
JPS5535917A true JPS5535917A (en) 1980-03-13
JPS6234433B2 JPS6234433B2 (en) 1987-07-27

Family

ID=14488116

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10856878A Granted JPS5535917A (en) 1978-09-06 1978-09-06 Treatment and treating agent for water contaminated by hexavalent chromium

Country Status (1)

Country Link
JP (1) JPS5535917A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0235677U (en) * 1988-08-31 1990-03-07

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4830694A (en) * 1971-08-26 1973-04-23
JPS516456A (en) * 1974-06-05 1976-01-20 Blaupunkt Werke Gmbh Fm benbetsuki

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4830694A (en) * 1971-08-26 1973-04-23
JPS516456A (en) * 1974-06-05 1976-01-20 Blaupunkt Werke Gmbh Fm benbetsuki

Also Published As

Publication number Publication date
JPS6234433B2 (en) 1987-07-27

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