JPS55152510A - Controller for extracting sludge at sedimentation basin - Google Patents

Controller for extracting sludge at sedimentation basin

Info

Publication number
JPS55152510A
JPS55152510A JP6038479A JP6038479A JPS55152510A JP S55152510 A JPS55152510 A JP S55152510A JP 6038479 A JP6038479 A JP 6038479A JP 6038479 A JP6038479 A JP 6038479A JP S55152510 A JPS55152510 A JP S55152510A
Authority
JP
Japan
Prior art keywords
sludge
raw water
sedimentation basin
controller
basin
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
JP6038479A
Other languages
Japanese (ja)
Inventor
Takashi Takizawa
Takashi Katori
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 JP6038479A priority Critical patent/JPS55152510A/en
Publication of JPS55152510A publication Critical patent/JPS55152510A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To control sludge smoothly by a method wherein the quantity of a dirty liquid actually precipitated in a sedimentation basin is obtained and the optimum sludge extracting period is determined.
CONSTITUTION: Raw water is introduced to a chemical mixing basin 10 from a water reaching well 9, a coagulant, etc. are added here, and the raw water is induced to a sedimentation basin 1 through the next flock forming basin. The sludge extraction of such a sedimentation basin is controlled in such a manner that the quantity of raw water Q, the turbidity of raw water Tu and the quantity of the coagulant injected α are each measured by means of a flow meter 7, a turbiditymeter 13 and a coagulant injecting quantity meter 8, the quantity of sludge W is obtained according to an operation formula W=Q×(Tu+α)×K1×K2, sludge discharge starting instructions are emitted by means of a controller 3 when the quantity of sludge W reaches a prescribed value A, sludge discharge stop instructions are emitted by means of the controller 3 when time reaches a prescribed time after a sludge discharge valve 2 is opened, and the sludge discharge valve 2 is closed. In the formula, K1 is the precentage of moisture content and K2 an effective working factor.
COPYRIGHT: (C)1980,JPO&Japio
JP6038479A 1979-05-18 1979-05-18 Controller for extracting sludge at sedimentation basin Pending JPS55152510A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6038479A JPS55152510A (en) 1979-05-18 1979-05-18 Controller for extracting sludge at sedimentation basin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6038479A JPS55152510A (en) 1979-05-18 1979-05-18 Controller for extracting sludge at sedimentation basin

Publications (1)

Publication Number Publication Date
JPS55152510A true JPS55152510A (en) 1980-11-27

Family

ID=13140592

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6038479A Pending JPS55152510A (en) 1979-05-18 1979-05-18 Controller for extracting sludge at sedimentation basin

Country Status (1)

Country Link
JP (1) JPS55152510A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4333838A (en) * 1980-03-24 1982-06-08 Schreiber-Klaranlagen Dr.-Ing. Aug. Schreiber Gmbh & Co. Kg Method and apparatus for purifying an activated sludge-waste water mixture
JPS58101710A (en) * 1981-12-11 1983-06-17 Hitachi Ltd Controller for discharging sludge from settling basin
KR20040021118A (en) * 2002-09-02 2004-03-10 주식회사 포스코 Apparatus for depositing disposing drug with automatic distribution ratio

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4333838A (en) * 1980-03-24 1982-06-08 Schreiber-Klaranlagen Dr.-Ing. Aug. Schreiber Gmbh & Co. Kg Method and apparatus for purifying an activated sludge-waste water mixture
JPS58101710A (en) * 1981-12-11 1983-06-17 Hitachi Ltd Controller for discharging sludge from settling basin
JPS6226806B2 (en) * 1981-12-11 1987-06-11 Hitachi Ltd
KR20040021118A (en) * 2002-09-02 2004-03-10 주식회사 포스코 Apparatus for depositing disposing drug with automatic distribution ratio

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