Title:
HEAVY METAL TREATMENT AGENT AND HEAVY METAL TREATMENT METHOD USING SAME
Document Type and Number:
WIPO Patent Application WO/2011/086999
Kind Code:
A1
Abstract:
Disclosed is a heavy metal treatment agent which has significantly improved lead insolubilization performance in an alkaline medium, uses a diethylenetriamine carbodithioate salt, and can be used in the treatment of alkaline heavy metal contaminants and in the treatment of heavy metal contaminant matter with pH variation. In the heavy metal treatment agent, piperazine-N,N'-bis-carbodithioate is added at 30 wt% or less to a diethylenetriamine-N1,N2,N3-tris-carbodithioate salt.
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Inventors:
AYAMA, Yoshinori (4560 Kaisei-cho, Shunan-sh, Yamaguchi 01, 〒7468501, JP)
阿山 義則 (〒01 山口県周南市開成町４５６０番地 東ソー株式会社 南陽事業所内 Yamaguchi, 〒7468501, JP)
HIKITA, Hideki (4560 Kaisei-cho, Shunan-sh, Yamaguchi 01, 〒7468501, JP)
阿山 義則 (〒01 山口県周南市開成町４５６０番地 東ソー株式会社 南陽事業所内 Yamaguchi, 〒7468501, JP)
HIKITA, Hideki (4560 Kaisei-cho, Shunan-sh, Yamaguchi 01, 〒7468501, JP)
Application Number:
JP2011/050297
Publication Date:
July 21, 2011
Filing Date:
January 11, 2011
Export Citation:
Assignee:
TOSOH CORPORATION (4560, Kaisei-cho Shunan-sh, Yamaguchi 01, 〒7468501, JP)
東ソー株式会社 (〒01 山口県周南市開成町４５６０番地 Yamaguchi, 〒7468501, JP)
AYAMA, Yoshinori (4560 Kaisei-cho, Shunan-sh, Yamaguchi 01, 〒7468501, JP)
阿山 義則 (〒01 山口県周南市開成町４５６０番地 東ソー株式会社 南陽事業所内 Yamaguchi, 〒7468501, JP)
東ソー株式会社 (〒01 山口県周南市開成町４５６０番地 Yamaguchi, 〒7468501, JP)
AYAMA, Yoshinori (4560 Kaisei-cho, Shunan-sh, Yamaguchi 01, 〒7468501, JP)
阿山 義則 (〒01 山口県周南市開成町４５６０番地 東ソー株式会社 南陽事業所内 Yamaguchi, 〒7468501, JP)
International Classes:
A62D3/33; B09B3/00; B09C1/02; B09C1/08; C02F1/62; C09K3/00; A62D101/08; A62D101/43
Attorney, Agent or Firm:
SENMYO, Kenji et al. (4th Floor, SIA Kanda Square17, Kanda-konyach, Chiyoda-ku Tokyo 35, 〒1010035, JP)
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