Title:
WASTEWATER TREATMENT METHOD AND WASTEWATER RECYCLING METHOD
Document Type and Number:
Japanese Patent JP2019107612
Kind Code:
A
Abstract:
To provide a wastewater treatment method capable of stable filtration operation.SOLUTION: A water treatment method using a water treatment apparatus having a raw water tank (1), a UF membrane module (2), and a filtered water tank (3). When the filtration operation of the UF membrane module (2) is stopped at night, a circulation pump (22) is operated, a first on-off valve (31) and a second on-off valve (32) are closed, and a third on-off valve (33) is opened, and in this state, raw water in the circulation line is circulated, thereby inhibiting the propagation of aquatic organisms.SELECTED DRAWING: Figure 1
Inventors:
HOSONO KATSUMI
IKENAGA SHIGEYUKI
IKENAGA SHIGEYUKI
Application Number:
JP2017242287A
Publication Date:
July 04, 2019
Filing Date:
December 19, 2017
Export Citation:
Assignee:
DAICEN MEMBRANE SYSTEMS LTD
International Classes:
C02F1/44; B01D61/10; B01D61/12
Domestic Patent References:
| JPS54106079A | 1979-08-20 | |||
| JPS6438198A | 1989-02-08 | |||
| JPH0138557B2 | 1989-08-15 | |||
| JPH1176769A | 1999-03-23 | |||
| JPH11104639A | 1999-04-20 | |||
| JP2011067716A | 2011-04-07 | |||
| JP2004033947A | 2004-02-05 |
Attorney, Agent or Firm:
Satoshi Furuya
Yoshitsune Kazumasa
Yoshitsune Kazumasa