JPS5567306A - Stirring speed control apparatus at flock forming reservoir - Google Patents

Stirring speed control apparatus at flock forming reservoir

Info

Publication number
JPS5567306A
JPS5567306A JP14100178A JP14100178A JPS5567306A JP S5567306 A JPS5567306 A JP S5567306A JP 14100178 A JP14100178 A JP 14100178A JP 14100178 A JP14100178 A JP 14100178A JP S5567306 A JPS5567306 A JP S5567306A
Authority
JP
Japan
Prior art keywords
flocks
turbidity
resorvoir
raw water
flocculator
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
JP14100178A
Other languages
Japanese (ja)
Inventor
Mitsuyoshi Yanome
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 JP14100178A priority Critical patent/JPS5567306A/en
Publication of JPS5567306A publication Critical patent/JPS5567306A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To effectively carry out the flock formation by enabling the change of a revolving number, that is, a stirring rate of a flocculator according to a turbidity degree and a flowing amount of a raw water.
CONSTITUTION: A raw water 2 is introduced into a water introducing resorvoir 9 and blend with chlorine 4 and alkali 5 for pretreating, thereafter entered into a high speed mixing resorvoir 10 through an electromagnetic flow meter 6. In this pond, active silicic acid, calcium hydroxide or barium sulphate is added and stirred to form flocks by flocculating colloidal particles of a raw water. The formed flocks are is entered into a flocks forming resorvoir 17 and the formation of flocks is promoted. To form this flocks, a mechanical stirring is carried out by a flocculator 8. On the other hand, the turbidity of a raw water detected by a turbidity meter 3 and a flow meter 6 and a flow volume to be entered to a flock forming resorvoir 11 are sent to a control apparatus and the revolving number is determined by the flow volume and the turbidity so as to increase the revolving number when the flow volume is increased and to decrease the said revolving number when the turbidity is lowered. Thereby, the stirring speed of a flocculator 8 is controlled.
COPYRIGHT: (C)1980,JPO&Japio
JP14100178A 1978-11-17 1978-11-17 Stirring speed control apparatus at flock forming reservoir Pending JPS5567306A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14100178A JPS5567306A (en) 1978-11-17 1978-11-17 Stirring speed control apparatus at flock forming reservoir

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14100178A JPS5567306A (en) 1978-11-17 1978-11-17 Stirring speed control apparatus at flock forming reservoir

Publications (1)

Publication Number Publication Date
JPS5567306A true JPS5567306A (en) 1980-05-21

Family

ID=15281852

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14100178A Pending JPS5567306A (en) 1978-11-17 1978-11-17 Stirring speed control apparatus at flock forming reservoir

Country Status (1)

Country Link
JP (1) JPS5567306A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6161605A (en) * 1984-08-31 1986-03-29 Ebara Infilco Co Ltd Operation of flocculator
US4654139A (en) * 1984-06-08 1987-03-31 Hitachi, Ltd. Flocculation basin in water treatment process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4654139A (en) * 1984-06-08 1987-03-31 Hitachi, Ltd. Flocculation basin in water treatment process
JPS6161605A (en) * 1984-08-31 1986-03-29 Ebara Infilco Co Ltd Operation of flocculator

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