JPS55129120A - Operating method of filter pond - Google Patents

Operating method of filter pond

Info

Publication number
JPS55129120A
JPS55129120A JP3867079A JP3867079A JPS55129120A JP S55129120 A JPS55129120 A JP S55129120A JP 3867079 A JP3867079 A JP 3867079A JP 3867079 A JP3867079 A JP 3867079A JP S55129120 A JPS55129120 A JP S55129120A
Authority
JP
Japan
Prior art keywords
filtration
filter
decrease
ponds
increase
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.)
Granted
Application number
JP3867079A
Other languages
Japanese (ja)
Other versions
JPS6329574B2 (en
Inventor
Gi Hisayoshi
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 Ltd
Original Assignee
Hitachi 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 Ltd filed Critical Hitachi Ltd
Priority to JP3867079A priority Critical patent/JPS55129120A/en
Publication of JPS55129120A publication Critical patent/JPS55129120A/en
Publication of JPS6329574B2 publication Critical patent/JPS6329574B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Filtration Of Liquid (AREA)

Abstract

PURPOSE: To control automatically the filtration and increase or decrease in the number of filter ponds in filtration process, by measuring the filtration state.
CONSTITUTION: Water sent from a river by a intake pump to a water purification plant is once sent to a raw water tank, then it is distributed to plural settling tanks, further to plural filter ponds. It is necessary to increase or decrease the number of the filter ponds according to the increase or decrease in the quantity of water to be treated. When the number of the filter ponds is increased or decreased, a pond of the longest accumulated filtration time out of filter ponds which are waiting for filtration, or of the longest filter path is selected preferentially. When the values described above are equal to each other, the pond staying for longest time after washing is selected.
COPYRIGHT: (C)1980,JPO&Japio
JP3867079A 1979-03-30 1979-03-30 Operating method of filter pond Granted JPS55129120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3867079A JPS55129120A (en) 1979-03-30 1979-03-30 Operating method of filter pond

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3867079A JPS55129120A (en) 1979-03-30 1979-03-30 Operating method of filter pond

Publications (2)

Publication Number Publication Date
JPS55129120A true JPS55129120A (en) 1980-10-06
JPS6329574B2 JPS6329574B2 (en) 1988-06-14

Family

ID=12531698

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3867079A Granted JPS55129120A (en) 1979-03-30 1979-03-30 Operating method of filter pond

Country Status (1)

Country Link
JP (1) JPS55129120A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6290715U (en) * 1985-11-27 1987-06-10

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02141483U (en) * 1989-01-23 1990-11-28

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6290715U (en) * 1985-11-27 1987-06-10

Also Published As

Publication number Publication date
JPS6329574B2 (en) 1988-06-14

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