JPS5651215A - Cleaning of filter medium - Google Patents

Cleaning of filter medium

Info

Publication number
JPS5651215A
JPS5651215A JP12644479A JP12644479A JPS5651215A JP S5651215 A JPS5651215 A JP S5651215A JP 12644479 A JP12644479 A JP 12644479A JP 12644479 A JP12644479 A JP 12644479A JP S5651215 A JPS5651215 A JP S5651215A
Authority
JP
Japan
Prior art keywords
cleaning
filter medium
air
water
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP12644479A
Other languages
Japanese (ja)
Inventor
Masa Iwai
Shiro Kaneko
Azuma Nakaoka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Plant Technologies Ltd
Original Assignee
Hitachi Plant Technologies Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Plant Technologies Ltd filed Critical Hitachi Plant Technologies Ltd
Priority to JP12644479A priority Critical patent/JPS5651215A/en
Publication of JPS5651215A publication Critical patent/JPS5651215A/en
Pending legal-status Critical Current

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  • Filtration Of Liquid (AREA)

Abstract

PURPOSE: To effectively remove pollutants adhered to filter medium by a method in which back washing is made by supplying a cleaning water in the opposite direction to filtering direction and also a cleaning agent composed mainly of hydrogen peroxide is flowed onto the upside of the filter medium layer.
CONSTITUTION: The filter medium of the filtering layer 7 is washed with a cleaning water supplied from the cleaning water supply pipe 3 serving as a treating water discharge pipe, and then the cleaning water is discharged through the trough 4 to the discharge pipe 5. In the case of air cleaning, air is supplied through the air supply pipe 12, injected from the air supply nozzle pipe 11 to clean the filter medium of the filtering layer 7 and then discharged to the air discharge pipe 6. Also, a mixed cleaning using both water cleaning and air cleaning is possible. Then, an approx. 35% aqueous solution of hydrogen peroxide, stored in the cleaning agent tank 9 is sent through the cleaning agent supply pipe 10 onto the upside of the filtering layer 7 in an amount of approx. 5W10% of the weight of the filter medium.
COPYRIGHT: (C)1981,JPO&Japio
JP12644479A 1979-10-02 1979-10-02 Cleaning of filter medium Pending JPS5651215A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12644479A JPS5651215A (en) 1979-10-02 1979-10-02 Cleaning of filter medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12644479A JPS5651215A (en) 1979-10-02 1979-10-02 Cleaning of filter medium

Publications (1)

Publication Number Publication Date
JPS5651215A true JPS5651215A (en) 1981-05-08

Family

ID=14935355

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12644479A Pending JPS5651215A (en) 1979-10-02 1979-10-02 Cleaning of filter medium

Country Status (1)

Country Link
JP (1) JPS5651215A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5912715A (en) * 1982-07-15 1984-01-23 Ebara Infilco Co Ltd Method for washing filter medium in high speed filter basin

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5912715A (en) * 1982-07-15 1984-01-23 Ebara Infilco Co Ltd Method for washing filter medium in high speed filter basin
JPH0148043B2 (en) * 1982-07-15 1989-10-17 Ebara Infilco

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