Title:
【発明の名称】混入した酸の精製方法及び装置
Document Type and Number:
Japanese Patent JPH11502460
Kind Code:
A
Abstract:
Acids contaminated with multi-valent metal salts are purified by a process which involves treatment in an acid sorption unit (ASU) and a nanofiltration unit (NFU). The feed solution can first be delivered to the ASU, which produces two solutions, one high in acid concentration and the other high in metal salt concentration. The high acid concentration solution can be treated in the NFU to produce an acid end product and a reject metal salt solution which can be recirculated to the feed of the NFU. Alternatively, the high metal salt solution can be treated in the NFU, and its permeate recirculated to the ASU as eluate. In an alternative configuration, the feed is delivered first to the NFU. In all cases, the membrane reject solution from the NFU is recirculated to increase the metal salt concentration. A second NFU can be used to process the solution from the ASU which contains a high metal salt concentration.
More Like This:
| WO/2016/113606 | CYLINDER ARRANGEMENT AND METHOD OF USE FOR ENERGY RECOVERY WITH SEAWATER DESALINATION |
| WO/2019/117479 | FEED SPACER AND REVERSE OSMOSIS FILTER MODULE INCLUDING SAME |
| WO/2012/085313 | WATER TREATMENT SYSTEM |
Inventors:
Brown craig jay
Application Number:
JP52193296A
Publication Date:
March 02, 1999
Filing Date:
January 15, 1996
Export Citation:
Assignee:
Eco Tech Limited
International Classes:
B01D61/02; B01D61/04; B01D61/16; B01D61/18; B01D61/14; B01D61/58; B01J41/04; C01B17/90; C02F1/44; C23G1/36; (IPC1-7): B01J41/04; B01D61/14; B01D61/16; B01D61/18
Attorney, Agent or Firm:
Minoru Nakamura (7 outside)