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 rate

Info

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
Application number
FR7204734A
Other languages
French (fr)
Other versions
FR2125419B1 (en
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.)
AMMANN MASCHINEN AG
Original Assignee
AMMANN MASCHINEN AG
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 AMMANN MASCHINEN AG filed Critical AMMANN MASCHINEN AG
Publication of FR2125419A1 publication Critical patent/FR2125419A1/en
Application granted granted Critical
Publication of FR2125419B1 publication Critical patent/FR2125419B1/fr
Granted legal-status Critical Current

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)
  • General Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (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.
FR7204734A 1971-02-12 1972-02-11 Flocculating agent dose regulation - using clarity of samples as parameter for varying dosing rate Granted FR2125419A1 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
CH516329A (en) 1971-12-15
DE2162391A1 (en) 1972-08-24

Similar Documents

Publication Publication Date Title
ES412820A1 (en) Liquid-purifying process and apparatus
GB1519838A (en) Apparatus and process for monitoring and controlling the freedom from suspended particles of the overflow liquid from settling tanks in mechnaical separation processes for liquid-solid phases
DE69219125D1 (en) METHOD AND DEVICE FOR DETECTING CONTAMINATION TRACKS
FR2125419A1 (en) Flocculating agent dose regulation - using clarity of samples as parameter for varying dosing rate
BE804884A (en) METHOD FOR THE DOSING OF LIQUIDS AND DEVICE FOR THE PRACTICE OF THIS PROCESS
ES370364A1 (en) Apparatus for separating uranium from an aqueous solution
ES415204A1 (en) Method and apparatus for the purification of liquids
ES369936A1 (en) Method and apparatus for cleaning a filter cartridge
GB2577925A (en) Method of controlling the dosage of a flocculating agent
GB714642A (en) Improvements relating to ion-exchange processes and apparatus
CH516324A (en) Method and device for the treatment of aqueous liquids by means of metal ions
ES464668A1 (en) Method for obtaining dissolved suspended or chemically bound substances from a liquid
FR2073602A5 (en) METHOD AND DEVICE FOR THE CONTINUOUS TREATMENT OF LIQUIDS
JPH021554B2 (en)
JPS55106597A (en) Method of treating drained water containing thiosulfuric ions
ES400922A1 (en) Method and device for removing particles from a gaseous stream
DK122971B (en) Method for removing slag from metallurgical containers, whereby the mouth of a pipe is immersed in the slag layer, as well as an apparatus for carrying out the method.
FR2064721A5 (en) Bubble trap for liquid flows with level detector
GB945146A (en) A method of and apparatus for estimating a trace gas in a carrier gas
GB756735A (en) Improvements in and relating to filters
JPS57113347A (en) Sampling apparatus for sample water
NL7310299A (en) Sample collector for effluents containing suspended matter - section of pipe slides laterally to transfer contents to collector
SU432191A1 (en) INSTALLATION FOR LIGHTING WINE AND VOLUME OF SIMILAR PRODUCTS IN A STREAM
DAINTY STORM WATER SAMPLING MACHINE
BE759340A (en) Hand-operated water softener

Legal Events

Date Code Title Description
ST Notification of lapse