JPS5588810A - Method for filtering and washing in combination - Google Patents

Method for filtering and washing in combination

Info

Publication number
JPS5588810A
JPS5588810A JP16135078A JP16135078A JPS5588810A JP S5588810 A JPS5588810 A JP S5588810A JP 16135078 A JP16135078 A JP 16135078A JP 16135078 A JP16135078 A JP 16135078A JP S5588810 A JPS5588810 A JP S5588810A
Authority
JP
Japan
Prior art keywords
tank
water
valve
washing
flow rate
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
JP16135078A
Other languages
Japanese (ja)
Inventor
Tetsuhiro Koga
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.)
Proterial Ltd
Original Assignee
Hitachi Metals 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 Metals Ltd filed Critical Hitachi Metals Ltd
Priority to JP16135078A priority Critical patent/JPS5588810A/en
Publication of JPS5588810A publication Critical patent/JPS5588810A/en
Pending legal-status Critical Current

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  • Filtration Of Liquid (AREA)

Abstract

PURPOSE: To wash filter tanks alternately and to make the size of a treating water tank smaller, by treating a raw water, obtained by decomposition of sewage or waste water in a settling tank, in a filter tank, then by letting the water flow reversely to the other filter tank, in addn., by increasing the raw water feed flow rate to the back wash water flow rate.
CONSTITUTION: When raw water is filtered in a filter tank 5a, and a filter tank 5b is back washed, feed pumps 17 and 19 installed in a raw water tank 2 are operated simultaneously with valves 20 and 4a opened and a valve 4b and a discharge valve 12a closed. Hereby, raw water at a flow rate equal to that of the back washing is fed to the tank 5a to obtain treated water. When a valve 14 is closed, and a discharge valve 12b is opened, treating water at the back wash water flow rate is made to flow from the tank 5a to the tank 5b so as to wash it, and washing waste water is discharged through the valve 12b to a sedimentation pond. For conducting fore- washing, treated water is sprayed into the upper part of the tank 5b from a treated water tank 15 or treated water pipe 13 by means of a press. pump 21, with a valve 11b opened. In washing the tank 5a, the operation may be conducted with the above described codes a, b interchanged.
COPYRIGHT: (C)1980,JPO&Japio
JP16135078A 1978-12-27 1978-12-27 Method for filtering and washing in combination Pending JPS5588810A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16135078A JPS5588810A (en) 1978-12-27 1978-12-27 Method for filtering and washing in combination

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16135078A JPS5588810A (en) 1978-12-27 1978-12-27 Method for filtering and washing in combination

Publications (1)

Publication Number Publication Date
JPS5588810A true JPS5588810A (en) 1980-07-04

Family

ID=15733404

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16135078A Pending JPS5588810A (en) 1978-12-27 1978-12-27 Method for filtering and washing in combination

Country Status (1)

Country Link
JP (1) JPS5588810A (en)

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