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FR2440340A1 - PROCESS FOR DEHYDRATION OF FLOCCULATED LIQUID SLUDGE AND APPARATUS SUITABLE FOR IMPLEMENTING SUCH A PROCESS - Google Patents

PROCESS FOR DEHYDRATION OF FLOCCULATED LIQUID SLUDGE AND APPARATUS SUITABLE FOR IMPLEMENTING SUCH A PROCESS

Info

Publication number
FR2440340A1
FR2440340A1 FR7926830A FR7926830A FR2440340A1 FR 2440340 A1 FR2440340 A1 FR 2440340A1 FR 7926830 A FR7926830 A FR 7926830A FR 7926830 A FR7926830 A FR 7926830A FR 2440340 A1 FR2440340 A1 FR 2440340A1
Authority
FR
France
Prior art keywords
sludge
dehydration
implementing
apparatus suitable
water
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
FR7926830A
Other languages
French (fr)
Other versions
FR2440340B1 (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.)
Agrotechnika NP
Original Assignee
Agrotechnika NP
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 Agrotechnika NP filed Critical Agrotechnika NP
Publication of FR2440340A1 publication Critical patent/FR2440340A1/en
Application granted granted Critical
Publication of FR2440340B1 publication Critical patent/FR2440340B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • B01D21/28—Mechanical auxiliary equipment for acceleration of sedimentation, e.g. by vibrators or the like
    • B01D21/283—Settling tanks provided with vibrators
    • 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
    • B01D21/0012—Settling tanks making use of filters, e.g. by floating layers of particulate material
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatment Of Sludge (AREA)

Abstract

PROCEDE DE DESHYDRATATION POUR BOUES FLOCULEES LIQUIDES DANS LES STATIONS D'EPURATION DES EAUX, ET DISPOSITIF CORRESPONDANT. SOUS L'EFFET DE LA PRESSION EXERCEE PAR LES COUCHES DE BOUES DESHYDRATEES SUPERIEURES SUR LES COUCHES INFERIEURES, IL SE PRODUIT UN ECOULEMENT THIXOTROPIQUE DE CES DERNIERES QUI EST STOPPE EN-DECA DU SEUIL D'ECOULEMENT LIBRE DES BOUES LIQUIDES, L'EAU CONTENUE DANS LES BOUES S'ECOULANT AU-DELA DE CE SEUIL. LE RECIPIENT 1 UTILISE POSSEDE UN FOND IMPERMEABLE 3, LIMITE AU MOINS PARTIELLEMENT PAR DEUX PAROIS 4, 4 PERMEABLES A L'EAU, L'ARRIVEE DES BOUES 6 ETANT DISPOSEE AU-DESSUS DU FOND 3. CE DISPOSITIF NE NECESSITANT NI ENERGIE NI POLYCOAGULANTS EST UTILISE POUR L'EPAISSISSEMENT DES BOUES DANS LES STATIONS D'EPURATION BIOLOGIQUE AUSSI BIEN QUE CHIMIQUE.DEHYDRATION PROCESS FOR LIQUID FLOCCULATED SLUDGE IN WATER PURIFICATION STATIONS, AND CORRESPONDING DEVICE. UNDER THE EFFECT OF THE PRESSURE EXERCISED BY THE UPPER DEHYDRATED SLUDGE LAYERS ON THE LOWER LAYERS, THIXOTROPIC FLOW OF THESE LATTERS OCCURRED WHICH IS STOPPED BELOW THE FREE FLOW THRESHOLD OF THE LIQUID SLUDGE, THE WATER CONTAINED IN SLUDGE FLOWING BEYOND THIS THRESHOLD. THE CONTAINER 1 USED HAS AN IMPERMEABLE BOTTOM 3, LIMITED AT LEAST PARTIALLY BY TWO WALLS 4, 4 PERMEABLE TO WATER, THE ARRIVAL OF SLUDGE 6 BEING PLACED ABOVE THE BOTTOM 3. THIS DEVICE NEEDS NO ENERGY OR POLYCOAGULANTS IS USED FOR THE THICKENING OF SLUDGE IN BIOLOGICAL AS WELL AS CHEMICAL STATIONS.

FR7926830A 1978-10-31 1979-10-30 PROCESS FOR DEHYDRATION OF FLOCCULATED LIQUID SLUDGE AND APPARATUS SUITABLE FOR IMPLEMENTING SUCH A PROCESS Granted FR2440340A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS787074A CS203523B1 (en) 1978-10-31 1978-10-31 Method of dewatering fluid flocculent sludge and device for making the said method

Publications (2)

Publication Number Publication Date
FR2440340A1 true FR2440340A1 (en) 1980-05-30
FR2440340B1 FR2440340B1 (en) 1984-08-24

Family

ID=5419200

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7926830A Granted FR2440340A1 (en) 1978-10-31 1979-10-30 PROCESS FOR DEHYDRATION OF FLOCCULATED LIQUID SLUDGE AND APPARATUS SUITABLE FOR IMPLEMENTING SUCH A PROCESS

Country Status (11)

Country Link
AT (1) AT388909B (en)
CH (1) CH642932A5 (en)
CS (1) CS203523B1 (en)
DE (1) DE2944038A1 (en)
ES (1) ES485523A1 (en)
FR (1) FR2440340A1 (en)
GB (1) GB2032794B (en)
GR (1) GR72476B (en)
IT (1) IT1124698B (en)
NL (1) NL177801C (en)
YU (1) YU263479A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1268865B1 (en) * 1993-05-24 1997-03-13 Marino Patella MUD DEHYDRATION PLANT

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4104168A (en) * 1975-08-08 1978-08-01 Kiss Sandor G Sludge settling and de-watering apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2439319C3 (en) * 1974-08-16 1982-02-25 Werner 7000 Stuttgart Zink Rotary piston internal combustion engine
CH609573A5 (en) * 1976-08-18 1979-03-15 Roediger Ag Apparatus for separating aqueous suspensions, in particular in the case of effluent sludges

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4104168A (en) * 1975-08-08 1978-08-01 Kiss Sandor G Sludge settling and de-watering apparatus

Also Published As

Publication number Publication date
GB2032794A (en) 1980-05-14
IT1124698B (en) 1986-05-14
ATA700679A (en) 1989-02-15
DE2944038A1 (en) 1980-05-08
NL177801C (en) 1985-12-02
YU263479A (en) 1983-02-28
CH642932A5 (en) 1984-05-15
NL177801B (en) 1985-07-01
AT388909B (en) 1989-09-25
FR2440340B1 (en) 1984-08-24
GR72476B (en) 1983-11-11
CS203523B1 (en) 1981-03-31
IT7926855A0 (en) 1979-10-29
NL7907954A (en) 1980-05-02
ES485523A1 (en) 1980-09-01
GB2032794B (en) 1983-06-15

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Legal Events

Date Code Title Description
ST Notification of lapse