Title:
廃棄物の処理方法
Document Type and Number:
Japanese Patent JP5850294
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a disposal method of waste which can precipitate selenium generated during disposal of the waste in a cleaning liquid which cleans the waste at low cost.SOLUTION: The disposal method of waste includes a cleaning step of cleaning the waste by contacting with the cleaning liquid, and a precipitating step of precipitating the selenium contained in the cleaning liquid after contacting with the waste. The disposal method includes a reaction step in which a reducing agent is added to the cleaning liquid which contacts with the waste in the cleaning step, and the reducing agent is reacted with the selenium contained in the cleaning liquid to reduce the selenium. In the precipitating step, the selenium reduced in the reaction step and a surplus reducing agent are precipitated as precipitation, and at least a part of the precipitation is returned to the cleaning step.
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Inventors:
Masayoshi Konishi
Takuko Morikawa
Takuko Morikawa
Application Number:
JP2011040078A
Publication Date:
February 03, 2016
Filing Date:
February 25, 2011
Export Citation:
Assignee:
Sumitomo Osaka Cement Co., Ltd.
International Classes:
C02F1/56; B09B3/00; C02F1/58; C02F1/70
Domestic Patent References:
| JP2009172552A | ||||
| JP2006346618A |
Attorney, Agent or Firm:
Noboru Fujimoto
Hiroaki Nakatani
Yuichi Koyama
Hiroaki Nakatani
Yuichi Koyama