Title:
鉛成分及び水銀成分を含有する重金属含有灰の処理方法、及び重金属含有灰に含まれる水銀成分の溶出抑制剤
Document Type and Number:
Japanese Patent JP7000812
Kind Code:
B2
Abstract:
To provide a method capable of suppressing the insolubilization of a lead component contained in fly ash and an another elution of the insolubilized mercury component by dispensing with chemical feed management using special chemical feed management equipment or experimental operation in an analysis chamber.SOLUTION: A method of this invention includes a step of mixing heavy metal containing ash containing lead component and mercury component with a heavy metal immobilizer that immobilizes the lead component and the mercury component. Here, the heavy metal immobilizer contains a chelate-based heavy metal immobilizer and a zinc compound. The chelate-based metal immobilizer preferably contains an organic compound having a dithiocarbamic acid. The zinc compound preferably contains a kind or more selected from a group consisting of zinc chloride, zinc acetate, zinc hyposulfite, zinc nitrate, zinc oxide, zinc hydroxide, zinc carbide, basic zinc carbide, zinc carbide, and zinc phosphate.SELECTED DRAWING: None
Inventors:
Kentaro Yoneyama
Keiichi Mizushina
Keiichi Mizushina
Application Number:
JP2017221477A
Publication Date:
February 04, 2022
Filing Date:
November 17, 2017
Export Citation:
Assignee:
Kurita Water Industries Ltd.
International Classes:
A62D3/33; B09B3/70
Domestic Patent References:
| JP2004016866A | ||||
| JP53025287A | ||||
| JP2004148279A | ||||
| JP7284748A | ||||
| JP2006136805A |
Foreign References:
| CN106955451A |
Attorney, Agent or Firm:
Hayashi Kazuyoshi
Yuichi Niiyama
Yuichi Niiyama
Previous Patent: Torque estimator, method, and program
Next Patent: Drive transmission device and image forming device
Next Patent: Drive transmission device and image forming device