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1. WO2004103917 - WATER TREATMENT METHOD AND APPARATUS USING PRETREATMENT AND MEMBRANES

Publication Number WO/2004/103917
Publication Date 02.12.2004
International Application No. PCT/US2004/016031
International Filing Date 20.05.2004
IPC
C02F 1/54 2006.1
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
52by flocculation or precipitation of suspended impurities
54using organic material
CPC
B01D 2311/04
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2311Details relating to membrane separation process operations and control
04Specific process operations in the feed stream; Feed pretreatment
B01D 2311/12
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2311Details relating to membrane separation process operations and control
12Addition of chemical agents
B01D 61/145
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
14Ultrafiltration; Microfiltration
145Ultrafiltration
B01D 61/16
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
14Ultrafiltration; Microfiltration
16Feed pretreatment
C02F 1/44
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
44by dialysis, osmosis or reverse osmosis
C02F 1/444
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
44by dialysis, osmosis or reverse osmosis
444by ultrafiltration or microfiltration
Applicants
  • INFILCO DEGREMONT, INC. [US]/[US] (AllExceptUS)
  • BALLARD, Temple, P. [US]/[US] (UsOnly)
Inventors
  • BALLARD, Temple, P.
Agents
  • CHRISTENBURY, Daniel, T.
Priority Data
60/472,33221.05.2003US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) WATER TREATMENT METHOD AND APPARATUS USING PRETREATMENT AND MEMBRANES
(FR) PROCEDE ET DISPOSITIF DE TRAITEMENT DES EAUX FAISANT APPEL A UN PRETRAITEMENT AINSI QU'A DES MEMBRANES
Abstract
(EN) A method of treating liquid containing at least one contaminant including mixing precipitant chemical with the liquid to cause a precipitation reaction and produce a precipitant, introducing the precipitant and the liquid into a clarification device, mixing activated silica with the precipitant and liquid to cause a flocculation of the precipitant, separating the liquid from flocculated precipitant, and introducing the liquid into a membrane treatment device to cause a reduction of flocculated precipitant from the liquid.
(FR) L'invention concerne un procédé destiné à traiter un liquide contenant au moins un contaminant et consistant à mélanger un produit chimique pour précipitant avec le liquide de sorte à provoquer une réaction de précipitation et à produire un précipitant, à introduire le précipitant et le liquide dans un dispositif de clarification, à mélanger une silice activée avec le précipitant et le liquide de façon à provoquer la floculation du précipitant, et à introduire le liquide dans un dispositif de traitement à membrane de manière à provoquer une réduction de précipitant floculé à partir du liquide.
Related patent documents
US2007199896This application is not viewable in PATENTSCOPE because the national phase entry has not been published yet or the national entry is issued from a country that does not share data with WIPO or there is a formatting issue or an unavailability of the application.
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