Title:
ホウ素含有水の処理方法
Document Type and Number:
Japanese Patent JP4058787
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a high quality treated water by separating a boron-containing water into a condensed water and a concentrated material by evaporation concentration, bringing the condensed water into contact with an ion exchange resin to remove boron and returning a regeneration waste liquid generated by the regeneration of the ion exchange resin to an evaporation concentration process to efficiently remove boron. SOLUTION: The raw water from a raw water passage 5 and the regenerated waste liquid from a waste liquid supply passage 6 are introduced into an adjusting vessel 1, mixed with a stirrer 7 and adjusted pH to >= neutral by injecting a pH adjuster from a chemical injection passage 8. The mixed liquid in the adjusting vessel 1 is introduced into an evaporation condensation device 2, the condensed water is obtained by condensing the vapor and is sent to an ion exchange resin vessel 3. The ion exchange resin vessel 3 has a resin layer 12, boron is exchanged and adsorbed to be removed by passing the condensed water through the resin 12 in an ion exchange process and the treated water is taken out from a treated water passage 13. The resin layer 12 is regenerated by injecting a regenerating agent from the chemical injection passage 14 and the regenerated waste liquid is sent to a waste liquid storage vessel 4 from a line passage 15, mixed by a stirrer 16 and supplied to the adjusting vessel 1 from the waste liquid supply passage 6 at a homogenization flow rate.
Inventors:
Yoshihiro Eto
Hiroyuki Asada
Hiroyuki Asada
Application Number:
JP33912297A
Publication Date:
March 12, 2008
Filing Date:
December 09, 1997
Export Citation:
Assignee:
Kurita Water Industries Ltd.
International Classes:
C02F1/42; C02F1/58; B01J47/02; B01J49/00; C02F1/04; C02F9/00
Domestic Patent References:
| JP59049898A | ||||
| JP59173182A | ||||
| JP57180493A | ||||
| JP58174241A | ||||
| JP10085743A |
Attorney, Agent or Firm:
Shigeru Yanagihara