JPS571409A - Controller for addition of chemical in water clarification plant - Google Patents
Controller for addition of chemical in water clarification plantInfo
- Publication number
- JPS571409A JPS571409A JP7436680A JP7436680A JPS571409A JP S571409 A JPS571409 A JP S571409A JP 7436680 A JP7436680 A JP 7436680A JP 7436680 A JP7436680 A JP 7436680A JP S571409 A JPS571409 A JP S571409A
- Authority
- JP
- Japan
- Prior art keywords
- addition
- raw water
- alkalinity
- measured
- circuit
- 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
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
PURPOSE: To accomplish favorable flocculation using a flocculant and a reduced amount of alkali chemicals by method wherein alkali chemicals are added to raw water at the maximum addtion ratio selected from addition ratios which are so determined as to cause the alkalinity of raw water, the alkalinity and the pH of flocculation-treated water to become at least specified values.
CONSTITUTION: The alkalinity A1 of the raw water entering a feed well 1 is measured by an alkalinity meter and is inputted to an addition ratio calculating circuit 11. The flow rate Q0 of the raw water flowing from the well 1 into a rapid agitation basin 2 is measured by a flowmeter 5, and the alkali chemicals are added into the raw water by an alkali chemical adding device 6. After adding the flocculant into the raw water in the basin 2, the alkalinity A2 and the pH of the flocculation-treated water are measured by an alkalinity meter 8 and a pH meter 9, respectively. Addition ratio calculating circuits 12, 13 calculate the addition ratios α3, α2 according to the values measured at the meters 9, 8 respectively. A maximum value selecting circuit 14 selects the maximum ratio αmax from among the addition ratios obtained by the calculating circuits 11W13, and feeds it to an addition amount calculting circuit 15. The circuit 15 claculates an addition amount from the above flow rate Q0 and the addition ratio αmax, and in accordance with the ad dition amount thus calculated, the adding device 6 adds the alkali chemicals to the raw water.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7436680A JPS6014602B2 (en) | 1980-06-04 | 1980-06-04 | Chemical injection control method for water purification equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7436680A JPS6014602B2 (en) | 1980-06-04 | 1980-06-04 | Chemical injection control method for water purification equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS571409A true JPS571409A (en) | 1982-01-06 |
JPS6014602B2 JPS6014602B2 (en) | 1985-04-15 |
Family
ID=13545082
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7436680A Expired JPS6014602B2 (en) | 1980-06-04 | 1980-06-04 | Chemical injection control method for water purification equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6014602B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60172517A (en) * | 1984-02-20 | 1985-09-06 | Toray Ind Inc | Extrusion molding method and apparatus for high polymer sheet-shaped matter |
JPS60220114A (en) * | 1984-04-13 | 1985-11-02 | Mitsubishi Electric Corp | Treatment of water |
KR100821667B1 (en) | 2006-07-19 | 2008-04-11 | 한국과학기술연구원 | Device and method for injecting cogulant for water purification |
-
1980
- 1980-06-04 JP JP7436680A patent/JPS6014602B2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60172517A (en) * | 1984-02-20 | 1985-09-06 | Toray Ind Inc | Extrusion molding method and apparatus for high polymer sheet-shaped matter |
JPS60220114A (en) * | 1984-04-13 | 1985-11-02 | Mitsubishi Electric Corp | Treatment of water |
KR100821667B1 (en) | 2006-07-19 | 2008-04-11 | 한국과학기술연구원 | Device and method for injecting cogulant for water purification |
Also Published As
Publication number | Publication date |
---|---|
JPS6014602B2 (en) | 1985-04-15 |
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