JPS57187009A - Concentration equipment by filtering - Google Patents

Concentration equipment by filtering

Info

Publication number
JPS57187009A
JPS57187009A JP56072427A JP7242781A JPS57187009A JP S57187009 A JPS57187009 A JP S57187009A JP 56072427 A JP56072427 A JP 56072427A JP 7242781 A JP7242781 A JP 7242781A JP S57187009 A JPS57187009 A JP S57187009A
Authority
JP
Japan
Prior art keywords
vacuum
valve
liquid discharging
filter
equivalent
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
JP56072427A
Other languages
Japanese (ja)
Other versions
JPS6257362B2 (en
Inventor
Takashi Idemitsu
Masataka Yoshida
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Fuji Electric Manufacturing Co 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 Fuji Electric Co Ltd, Fuji Electric Manufacturing Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP56072427A priority Critical patent/JPS57187009A/en
Publication of JPS57187009A publication Critical patent/JPS57187009A/en
Publication of JPS6257362B2 publication Critical patent/JPS6257362B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Treatment Of Sludge (AREA)
  • Filtration Of Liquid (AREA)

Abstract

PURPOSE: To improve an efficiency of concentration, by increasing in steps the pressure difference between pressures exerting from inside and outside on a filter-cloth net of a series of vacuum type filter plates hung in a gravity-settling type concentration tank.
CONSTITUTION: The degree of vacuum in filter plates 12 is increased in steps by opening liquid discharging valves 31, 32, and 33 in steps. That is, a vacuum pump 36 is stopped and a sucking valve 35 is kept closed after the pressure of filter chambers of the plates 12 is set to a vacuum equivalent to the height H1 of a syphon. Then, filtrate is the filter chambers is discharged into a filtrate tank 22 through a filtrate pipe 21 under the vacuum equivalent to the syphon head H1 when a liquid discharging valve 31 is opened. Next, the degree of vacuum in the chambers is changed to the intermediate vacuum equivalent to the head H2, when the valve 31 is closed and the liquid discharging valve 32 is opened, thus the filtering operation is performed intermittently. Further, the degree of vacuum is changed to the high vacuum equivalent to the syphon head H3 by closing the valve 32 and opening the liquid discharging valve 33, thus the filtering operation is further continued.
COPYRIGHT: (C)1982,JPO&Japio
JP56072427A 1981-05-14 1981-05-14 Concentration equipment by filtering Granted JPS57187009A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56072427A JPS57187009A (en) 1981-05-14 1981-05-14 Concentration equipment by filtering

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56072427A JPS57187009A (en) 1981-05-14 1981-05-14 Concentration equipment by filtering

Publications (2)

Publication Number Publication Date
JPS57187009A true JPS57187009A (en) 1982-11-17
JPS6257362B2 JPS6257362B2 (en) 1987-12-01

Family

ID=13488975

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56072427A Granted JPS57187009A (en) 1981-05-14 1981-05-14 Concentration equipment by filtering

Country Status (1)

Country Link
JP (1) JPS57187009A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04267905A (en) * 1991-02-21 1992-09-24 Takuma Co Ltd Water purification device
JP2007029861A (en) * 2005-07-27 2007-02-08 Mk:Kk Method and apparatus for dehydrating/concentrating sludge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04267905A (en) * 1991-02-21 1992-09-24 Takuma Co Ltd Water purification device
JP2007029861A (en) * 2005-07-27 2007-02-08 Mk:Kk Method and apparatus for dehydrating/concentrating sludge

Also Published As

Publication number Publication date
JPS6257362B2 (en) 1987-12-01

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