Title:
砒素含有汚泥のカルシウム系化合物被覆不溶化材
Document Type and Number:
Japanese Patent JP6607760
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method capable of providing a calcium-based compound coating insolubilization material adopted to a reclamation standard defined in Environment Agency notification No.13 by directly treating sludge containing high concentration arsenic.SOLUTION: A calcium-based compound coating insolubilization material adopted to a reclamation standard defined in Environment Agency notification No.13 can be obtained by conducting coating on a primary granulated article obtained by mixing and granulating a sludge containing high concentration arsenic with a cement-based solidification agent with the cement-based solidification agent or a cement-based solidification agent containing alginate by a secondary granulation or by modifying a surface of a secondary granulated article on which cement coating is conducted with alginate.SELECTED DRAWING: Figure 2
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Inventors:
Ryoshi Inoue
Ryoei Watanabe
Tetsuo Fujita
Ryoei Watanabe
Tetsuo Fujita
Application Number:
JP2015203293A
Publication Date:
November 20, 2019
Filing Date:
October 14, 2015
Export Citation:
Assignee:
DOWA ECO-SYSTEM Co., Ltd.
International Classes:
C09K3/00; B09B3/00; B09B5/00; B09C1/02; B09C1/08; C02F11/00
Domestic Patent References:
| JP2005305297A | ||||
| JP2001038321A | ||||
| JP2004008945A | ||||
| JP2006272144A | ||||
| JP2007222694A | ||||
| JP2013119057A |
Foreign References:
| CN101955345A |
Attorney, Agent or Firm:
Komatsu Taka