JPS5539228A - Washing apparatus for rapid filter pond - Google Patents

Washing apparatus for rapid filter pond

Info

Publication number
JPS5539228A
JPS5539228A JP11165978A JP11165978A JPS5539228A JP S5539228 A JPS5539228 A JP S5539228A JP 11165978 A JP11165978 A JP 11165978A JP 11165978 A JP11165978 A JP 11165978A JP S5539228 A JPS5539228 A JP S5539228A
Authority
JP
Japan
Prior art keywords
circuit
inputted
output
washing process
filtered water
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
JP11165978A
Other languages
Japanese (ja)
Other versions
JPS5712402B2 (en
Inventor
Yoshiaki Ogawa
Norihisa Suzuki
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 Engineering Co Ltd
Hitachi Ltd
Original Assignee
Hitachi Engineering Co Ltd
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 Engineering Co Ltd, Hitachi Ltd filed Critical Hitachi Engineering Co Ltd
Priority to JP11165978A priority Critical patent/JPS5539228A/en
Publication of JPS5539228A publication Critical patent/JPS5539228A/en
Publication of JPS5712402B2 publication Critical patent/JPS5712402B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Filtration Of Liquid (AREA)

Abstract

PURPOSE: To execute the washing process in good time, by inputting the output of the operational circuit for compensating the delay of the effluent of filtered water from the influent of raw water in the rapid filter pond, and the pressure difference signal between the pressures of influent and effluent, into the operational circuit for the filtration resistance, and by utilizing the output of this circuit for controlling the timing of washing process.
CONSTITUTION: The raw water is introduced into the rapid filter pond 5 through the valve 14 and the flow meter 1; the mud is removed by the sand bed 15 and the filtered water is introduced into the clean water pond 12 and is reserved there. The pressure difference between pressures at the raw water inlet of the sand bed 15 and the filtered water outlet is measured by the differential manometer 3 whose pressure difference signal is inputted to the operational circuit 10 for the filtration resistance. The signal showing the flow rate of raw water, being produced from the flow meter 1, and the signal showing the flow rate of the filtered water, being produced from the filtered water flow meter 7, together with the feedback signal 13 for the filtration resistance, are inputted to the operational circuit 9 for compensating the delay. Then, the output of the circuit 9 is inputted to the operational circuit 10 for the filtration resistance, and the output of the circuit 10 is inputted to the control circuit 11 for the washing process. Next, the output of the circuit 11 is inputted to the sequence circuit 8 for the washing process of the pond; hereby, the timing of washing process is controlled so as to execute the washing in good time.
COPYRIGHT: (C)1980,JPO&Japio
JP11165978A 1978-09-13 1978-09-13 Washing apparatus for rapid filter pond Granted JPS5539228A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11165978A JPS5539228A (en) 1978-09-13 1978-09-13 Washing apparatus for rapid filter pond

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11165978A JPS5539228A (en) 1978-09-13 1978-09-13 Washing apparatus for rapid filter pond

Publications (2)

Publication Number Publication Date
JPS5539228A true JPS5539228A (en) 1980-03-19
JPS5712402B2 JPS5712402B2 (en) 1982-03-10

Family

ID=14566924

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11165978A Granted JPS5539228A (en) 1978-09-13 1978-09-13 Washing apparatus for rapid filter pond

Country Status (1)

Country Link
JP (1) JPS5539228A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4482461A (en) * 1982-12-20 1984-11-13 French Systems, Inc. Backwash control for constant volume-pressure filtration system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4482461A (en) * 1982-12-20 1984-11-13 French Systems, Inc. Backwash control for constant volume-pressure filtration system

Also Published As

Publication number Publication date
JPS5712402B2 (en) 1982-03-10

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