Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ARSENIC ADSORBENT AND REMOVAL TREATMENT METHOD FOR ARSENIC USING THE SAME
Document Type and Number:
Japanese Patent JP2003019404
Kind Code:
A
Abstract:

To provide an inexpensive purifying method by which arsenic in the water to be treated can rapidly and efficiently be removed, and maintenance and control are facilitated.

Adsorption treatment where an arsenic adsorbent which is an aqueous solution of an inorganic flocculant, and in which pH lies within the range of 5.8 to 8.6, and the concentration of the inorganic flocculant is controlled to the range of 0.00001 to 50 wt.% is added to the water to be treated containing arsenic, and they are brought into contact is performed so that treated water efficiently freed from arsenic can be obtained. At this time, when its pH is controlled to 5.8 to 8.6 on the adsorption treatment, flocculated flocks become more stable. Further, when the turbidity of the water to be treated containing arsenic is previously removed, and then, the adsorption treatment is performed, the required amount of the adsorbent can be reduced.


More Like This:
JPH06114373PURE WATER PREPARATION METHOD
JP2003071256MEMBRANE WASHING METHOD AND TREATING METHOD FOR LIQUID TO BE TREATED
Inventors:
KANNO NAOYA
WATANABE YOSHIKIMI
OZAWA GENZO
IWASE KUNIO
WATARI KENJI
MIZUTANI KOICHI
Application Number:
JP2001206520A
Publication Date:
January 21, 2003
Filing Date:
July 06, 2001
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MITSUBISHI RAYON CO
WATANABE YOSHIKIMI
OZAWA GENZO
International Classes:
C02F1/44; B01D21/01; B01J20/02; B01J20/28; C02F1/28; C02F1/52; C02F1/58; (IPC1-7): B01D21/01; B01J20/02; B01J20/28; C02F1/28; C02F1/44; C02F1/52; C02F1/58
Domestic Patent References:
JPH01127094A1989-05-19
JP2001149926A2001-06-05
JPH11277050A1999-10-12



 
Previous Patent: JET STIRRING TYPE SOLID-LIQUID SEPARATION APPARATUS

Next Patent: SLUDGE SCRAPER