Title:
FILTRATION
Document Type and Number:
Japanese Patent JP3125608
Kind Code:
B2
Abstract:
PURPOSE: To provide a filter process for improving the stopping rate of solid suspended matters of small particle diameters even in the filter operation using a filter medium movable type filter.
CONSTITUTION: In a filter process using a filter with a raw water supply section and a cleaning means disposed in a circulation moving line in which a filter medium is moved continuously, first the cleaning means is set in the stop state by a new filter medium set newly in the circulation moving line, and the filter operation is continued until the treated water amount per unit time shows the given lower limit value. Then the cleaning means is operated, and the filter operation is continued until the treated water amount is regenerated to the given upper limit value lower than the initial treated water amount based on the new filter medium, and the cleaning means is again set in the stop state by the regenerated filter medium, and the filter operation is continued until the treated water amount is lowered to the lower limit value. After that, the filter operation in the state of operating the cleaning means and the filter operation in the state of stopping the operation of the cleaning means are repeated alternately.
Inventors:
Tamotsu Date
Teruo Senda
Kenji Nakaji
Teruo Senda
Kenji Nakaji
Application Number:
JP30364594A
Publication Date:
January 22, 2001
Filing Date:
December 07, 1994
Export Citation:
Assignee:
Toray Industries, Inc.
International Classes:
B01D39/08; B01D33/15; B01D33/27; (IPC1-7): B01D33/15; B01D33/27; B01D39/08
Domestic Patent References:
| JP6017214U | ||||
| JP5776817U | ||||
| JP21209U |
Attorney, Agent or Firm:
Shinichi Ogawa (2 outside)