FR2125419A1 - Flocculating agent dose regulation - using clarity of samples as parameter for varying dosing rate - Google Patents
Flocculating agent dose regulation - using clarity of samples as parameter for varying dosing rateInfo
- Publication number
- FR2125419A1 FR2125419A1 FR7204734A FR7204734A FR2125419A1 FR 2125419 A1 FR2125419 A1 FR 2125419A1 FR 7204734 A FR7204734 A FR 7204734A FR 7204734 A FR7204734 A FR 7204734A FR 2125419 A1 FR2125419 A1 FR 2125419A1
- Authority
- FR
- France
- Prior art keywords
- flocculating agent
- samples
- clarity
- dosing rate
- parameter
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
- B01D21/32—Density control of clear liquid or sediment, e.g. optical control ; Control of physical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
- B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D21/00—Control of chemical or physico-chemical variables, e.g. pH value
- G05D21/02—Control of chemical or physico-chemical variables, e.g. pH value characterised by the use of electric means
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5209—Regulation methods for flocculation or precipitation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
- C02F2209/006—Processes using a programmable logic controller [PLC] comprising a software program or a logic diagram
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/11—Turbidity
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
A method for precipitating suspended particles from a liquor, esp. for separating sludge from a liquid containing it, using a dosed flocculating agent, is carried out by removing samples at intervals from the liquor, containing flocculating agent, flowing into the separator, the quantity of flocculating agent dosed is reduced or increased according to whether the sample clarifies before or after a predetermined period of time, as the suspended particles sink. In a preferred apparatus, samples are removed at intervals from the incoming flow lines, into which flocculating agent has already been injected, the samples are tested by photo-sensitive devices for measuring their clarity in a sample vessel; depending upon whether a predetermined clarity level is reached before or after a predetermined time, a control circuit reduces or increases the dosing rate of flocculating agent.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH211071A CH516329A (en) | 1971-02-12 | 1971-02-12 | Process for separating suspended particles from a pulp, in which a flocculant is added to the pulp |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2125419A1 true FR2125419A1 (en) | 1972-09-29 |
FR2125419B1 FR2125419B1 (en) | 1975-03-21 |
Family
ID=4226099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7204734A Granted FR2125419A1 (en) | 1971-02-12 | 1972-02-11 | Flocculating agent dose regulation - using clarity of samples as parameter for varying dosing rate |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH516329A (en) |
DE (1) | DE2162391A1 (en) |
FR (1) | FR2125419A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103118755A (en) * | 2010-07-20 | 2013-05-22 | 凯米罗总公司 | Method and system for treating aqueous streams |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI20105813A0 (en) * | 2010-07-20 | 2010-07-20 | Kemira Oyj | Process and system for monitoring the characteristics of an aqueous flow |
US9562861B2 (en) * | 2011-04-05 | 2017-02-07 | Nalco Company | Method of monitoring macrostickies in a recycling and paper or tissue making process involving recycled pulp |
GB2552989B (en) * | 2016-08-18 | 2019-07-10 | Cdenviro Ltd | Test apparatus for a waste water treatment system |
GB2577925B (en) * | 2018-10-11 | 2023-02-15 | Cde Global Ltd | Method of controlling the dosage of a flocculating agent |
CN110054273A (en) * | 2019-05-06 | 2019-07-26 | 象山泛海环保科技有限责任公司 | A kind of power plant coal-contained wastewater automatic processing equipment |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2294697A (en) * | 1938-05-13 | 1942-09-01 | John J Seip | Clarification and decoloration of liquids |
FR1548562A (en) * | 1967-10-24 | 1968-12-06 | ||
US3441956A (en) * | 1967-01-23 | 1969-04-29 | Willard Farnham | Liquid treatment method and apparatus |
FR1601654A (en) * | 1968-12-27 | 1970-09-07 | Metering device for filtration additives - used in suspension | |
FR2056080A5 (en) * | 1969-08-29 | 1971-05-14 | Degremont Epuration |
-
1971
- 1971-02-12 CH CH211071A patent/CH516329A/en not_active IP Right Cessation
- 1971-12-16 DE DE19712162391 patent/DE2162391A1/en active Pending
-
1972
- 1972-02-11 FR FR7204734A patent/FR2125419A1/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2294697A (en) * | 1938-05-13 | 1942-09-01 | John J Seip | Clarification and decoloration of liquids |
US3441956A (en) * | 1967-01-23 | 1969-04-29 | Willard Farnham | Liquid treatment method and apparatus |
FR1548562A (en) * | 1967-10-24 | 1968-12-06 | ||
FR1601654A (en) * | 1968-12-27 | 1970-09-07 | Metering device for filtration additives - used in suspension | |
FR2056080A5 (en) * | 1969-08-29 | 1971-05-14 | Degremont Epuration |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103118755A (en) * | 2010-07-20 | 2013-05-22 | 凯米罗总公司 | Method and system for treating aqueous streams |
CN103118755B (en) * | 2010-07-20 | 2016-08-03 | 凯米罗总公司 | Current processing method and system |
Also Published As
Publication number | Publication date |
---|---|
FR2125419B1 (en) | 1975-03-21 |
DE2162391A1 (en) | 1972-08-24 |
CH516329A (en) | 1971-12-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |