Title:
RECHARGE METHOD
Document Type and Number:
Japanese Patent JP2018197471
Kind Code:
A
Abstract:
To make it possible to preferably supply a precoat material and accurately form a precoat layer on a surface of a spring-type filter.SOLUTION: A recharge method including removing an insoluble substance in object water W1 by filtering the object water W1 using a spring-type filter 11 having a surface on which precoat material is deposited and a precoat layer is formed and pouring object water W2 after processing of removing the insoluble substance has been performed, from a water pouring well 4 into the underground includes a precoat layer formation step of forming a precoat layer on the surface of the spring-type filter 11 by previously mixing the precoat material with water to obtain slurry-like precoat liquid S, supplying the precoat liquid S to a precoat tank 13 using a pump 18, and filtering the precoat liquid S using the spring-type filter 11.SELECTED DRAWING: Figure 1
Inventors:
ISHIKAWA AKIRA
SERIZAWA SADAMI
TAZAKI MASAHARU
HAYASHI HIDEHIKO
NIGIRIKAWA NAOHIRO
SERIZAWA SADAMI
TAZAKI MASAHARU
HAYASHI HIDEHIKO
NIGIRIKAWA NAOHIRO
Application Number:
JP2017103015A
Publication Date:
December 13, 2018
Filing Date:
May 24, 2017
Export Citation:
Assignee:
SHIMIZU CONSTRUCTION CO LTD
International Classes:
E02D19/10
Domestic Patent References:
| JP2002119977A | 2002-04-23 | |||
| JP2012110815A | 2012-06-14 | |||
| JP2013184151A | 2013-09-19 | |||
| JP2006102589A | 2006-04-20 |
Foreign References:
| US4704210A | 1987-11-03 | |||
| WO2009028163A1 | 2009-03-05 |
Attorney, Agent or Firm:
Yasushi Matsunuma
Kenichi Kawabuchi
Nishizawa Kazumi
Masatake Shiga
Tadashi Takahashi
Yoshifumi Saeki
Kenichi Kawabuchi
Nishizawa Kazumi
Masatake Shiga
Tadashi Takahashi
Yoshifumi Saeki