FR3021876B1 - Procede de decolmatage et dispositif sujet a encrassement s'y rapportant - Google Patents

Procede de decolmatage et dispositif sujet a encrassement s'y rapportant Download PDF

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Publication number
FR3021876B1
FR3021876B1 FR1455173A FR1455173A FR3021876B1 FR 3021876 B1 FR3021876 B1 FR 3021876B1 FR 1455173 A FR1455173 A FR 1455173A FR 1455173 A FR1455173 A FR 1455173A FR 3021876 B1 FR3021876 B1 FR 3021876B1
Authority
FR
France
Prior art keywords
fouling
pressure drop
unclogging
cycle
fluid
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.)
Active
Application number
FR1455173A
Other languages
English (en)
Other versions
FR3021876A1 (fr
Inventor
Jean Louis Westrelin
Marie Secondat
Pedro Fonseca
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.)
Suez International SAS
Original Assignee
Degremont SA
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
Priority claimed from FR1455173 external-priority
Application filed by Degremont SA filed Critical Degremont SA
Priority to FR1455173A priority Critical patent/FR3021876B1/fr
Publication of FR3021876A1 publication Critical patent/FR3021876A1/fr
Application granted granted Critical
Publication of FR3021876B1 publication Critical patent/FR3021876B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor
    • B01D29/44—Edge filtering elements, i.e. using contiguous impervious surfaces
    • B01D29/445—Bar screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor
    • B01D29/60—Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor integrally combined with devices for controlling the filtration
    • B01D29/606—Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor integrally combined with devices for controlling the filtration by pressure measuring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
    • B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/50—Cleaning
    • B07B1/52—Cleaning with brushes or scrapers
    • B07B1/526—Cleaning with brushes or scrapers with scrapers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
    • E02B8/02—Sediment base gates; Sand sluices; Structures for retaining arresting waterborne material
    • E02B8/023—Arresting devices for waterborne materials
    • E02B8/026—Cleaning devices

Abstract

La présente invention se rapporte au domaine des dispositifs traversés par un écoulement de fluide et subissant un encrassement en raison des impuretés présentes dans le fluide, l'encrassement produisant une augmentation en fonction du temps de la perte de charge définie comme la différence de niveau de fluide entre l'amont et l'aval de l'écoulement. La présente invention concerne plus particulièrement un procédé pour réaliser des cycles de décolmatage automatisés. Le déclenchement d'un cycle de décolmatage donné (CN) dépend de la perte de charge maximum (ΔH1) mesurée pendant un cycle de décolmatage antérieur (CN-1). Le procédé avance ou retarde l'instant (t1) de déclenchement du cycle (CN) selon que la perte de charge maximum (ΔH1) était supérieure ou inférieure, respectivement, à une valeur paramétrée. Le procédé permet en outre de désynchroniser les cycles de décolmatage de plusieurs dispositifs sujets à encrassement montés en parallèle. Utilisation notamment dans les dégrilleurs d'une station d'épuration pour les eaux usées.
FR1455173A 2014-06-06 2014-06-06 Procede de decolmatage et dispositif sujet a encrassement s'y rapportant Active FR3021876B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1455173A FR3021876B1 (fr) 2014-06-06 2014-06-06 Procede de decolmatage et dispositif sujet a encrassement s'y rapportant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1455173A FR3021876B1 (fr) 2014-06-06 2014-06-06 Procede de decolmatage et dispositif sujet a encrassement s'y rapportant
FR1455173 2014-06-06

Publications (2)

Publication Number Publication Date
FR3021876A1 FR3021876A1 (fr) 2015-12-11
FR3021876B1 true FR3021876B1 (fr) 2020-05-15

Family

ID=51352632

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1455173A Active FR3021876B1 (fr) 2014-06-06 2014-06-06 Procede de decolmatage et dispositif sujet a encrassement s'y rapportant

Country Status (1)

Country Link
FR (1) FR3021876B1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4277255A (en) * 1979-03-01 1981-07-07 Aktiebolaget Svenska Flaktfabriken Cleaning process control method for textile barrier filter material
US4482461A (en) * 1982-12-20 1984-11-13 French Systems, Inc. Backwash control for constant volume-pressure filtration system
AT2773U1 (de) * 1998-06-15 1999-04-26 Mahr Gernot Recheneinrichtung

Also Published As

Publication number Publication date
FR3021876A1 (fr) 2015-12-11

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