JPS5539228A - Washing apparatus for rapid filter pond - Google Patents
Washing apparatus for rapid filter pondInfo
- 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
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
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)
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 |
-
1978
- 1978-09-13 JP JP11165978A patent/JPS5539228A/en active Granted
Cited By (1)
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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