Title:
A method for treating acidic waste liquid containing metal ions and a device for treating acidic waste liquid containing metal ions.
Document Type and Number:
Japanese Patent JP6329916
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a metal ion-containing acidic waste liquid treatment method having improved efficiency of neutralizing coagulation and sedimentation treatment.SOLUTION: A metal ion-containing acidic waste liquid treatment method includes: a step A of contacting acidic waste liquid containing metal ions with a cation adsorbent to adsorb the metal ions on the cation adsorbent; a step B of desorbing the metal ions adsorbed on the cation adsorbent from the cation adsorbent to obtain a supernatant liquid containing the metal ions; a step C of introducing the supernatant liquid into an electrodialyzer having an anion exchange membrane and a cation exchange membrane to obtain concentrated water having higher concentrations of the metal ions than the concentrations of the metal ions in the supernatant liquid; and a step D of performing neutralizing coagulation and sedimentation treatment of the concentrated water.SELECTED DRAWING: Figure 1
Inventors:
Suehiro Shoichi
Shinji Shima
Shinji Shima
Application Number:
JP2015039972A
Publication Date:
May 23, 2018
Filing Date:
March 02, 2015
Export Citation:
Assignee:
Nippon Steel & Sumikin Engineering Co., Ltd.
International Classes:
C02F1/42; B01D61/44; B01D61/52; B01J49/06; C02F1/469; C02F1/62; C02F9/06
Domestic Patent References:
| JP2014148738A | ||||
| JP2003260439A | ||||
| JP10272371A | ||||
| JP52015168A | ||||
| JP50067289A | ||||
| JP1130782A |
Attorney, Agent or Firm:
Masatake Shiga
Mitsuo Teramoto
Sumio Tanai
Hiroshi Yamaguchi
Mitsuo Teramoto
Sumio Tanai
Hiroshi Yamaguchi