Title:
WATER PURIFYING DEVICE AND ITS OPERATION
Document Type and Number:
Japanese Patent JPH10180276
Kind Code:
A
Abstract:
To increase a flexibility on the operation in an aerobic fluidized bed purifying device.
In the water purifying device and its operation method, a raw water 100 to be purified is treated through upward a filter tank 2, and a short circuit flow passage in which a part of a treated water is returned to an A point at upstream side and passed through again the filter tank is provided. Then the device is operated so that a flow rate in the filter tank 2 may be a suitable value by keeping a total flow rate supplied to the filter tank 2 by controlling each flow rate of the treated water in the short circuit flow passage and the raw water 100.
Inventors:
HANDA FUMITAKA
NAKAHIRA SHIRO
OKAJIMA HIROAKI
NAKAHIRA SHIRO
OKAJIMA HIROAKI
Application Number:
JP34758296A
Publication Date:
July 07, 1998
Filing Date:
December 26, 1996
Export Citation:
Assignee:
HITACHI LTD
HITACHI TSUCHIURA ENG KK
HITACHI TSUCHIURA ENG KK
International Classes:
C02F3/06; C02F3/08; (IPC1-7): C02F3/08; C02F3/06
Attorney, Agent or Firm:
Takasaki Takahiro