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1. WO1997023415 - TREATMENT OF ALKALINE RINSE WATER BY REVERSE OSMOSIS FOLLOWING NEUTRALISATION WITH BIOGENIC CARBON DIOXIDE

Publication Number WO/1997/023415
Publication Date 03.07.1997
International Application No. PCT/EP1996/005603
International Filing Date 13.12.1996
Chapter 2 Demand Filed 07.07.1997
IPC
B01D 61/04 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
02Reverse osmosis; Hyperfiltration
04Feed pretreatment
B08B 3/14 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
08CLEANING
BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
3Cleaning by methods involving the use or presence of liquid or steam
04Cleaning involving contact with liquid
10with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity, by vibration
14Removing waste, e.g. labels, from cleaning liquid
C02F 1/44 2006.01
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 1/66 2006.01
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
66by neutralisation; pH adjustment
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 61/025
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
02Reverse osmosis; Hyperfiltration ; ; Nanofiltration
025Reverse osmosis; Hyperfiltration
B01D 61/04
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
02Reverse osmosis; Hyperfiltration ; ; Nanofiltration
04Feed pretreatment
B08B 3/14
BPERFORMING OPERATIONS; TRANSPORTING
08CLEANING
BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
3Cleaning by methods involving the use or presence of liquid or steam
04Cleaning involving contact with liquid
10with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity, by vibration
14Removing waste, e.g. labels, from cleaning liquid; ; Regenerating cleaning liquids
C02F 1/441
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
441by reverse osmosis
C02F 1/66
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
66by neutralisation; pH adjustment
Applicants
  • HENKEL-ECOLAB GMBH & CO. OHG [DE]/[DE] (AllExceptUS)
  • KRACK, Ralf [DE]/[DE] (UsOnly)
  • LAUFENBERG, Alfred [DE]/[DE] (UsOnly)
  • ROSSNER, Dietmar [DE]/[DE] (UsOnly)
Inventors
  • KRACK, Ralf
  • LAUFENBERG, Alfred
  • ROSSNER, Dietmar
Agents
  • WACKER, Manfred
Priority Data
195 48 316.222.12.1995DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) AUFBEREITUNG ALKALISCHER SPÜLWÄSSER MIT UMKEHROSMOSE NACH NEUTRALISATION MIT BIOGENEM KOHLENDIOXID
(EN) TREATMENT OF ALKALINE RINSE WATER BY REVERSE OSMOSIS FOLLOWING NEUTRALISATION WITH BIOGENIC CARBON DIOXIDE
(FR) TRAITEMENT D'EAUX DE RINÇAGE PAR OSMOSE INVERSE APRES NEUTRALISATION AU DIOXYDE DE CARBONE BIOGENIQUE
Abstract
(DE)
Verfahren zur Aufbereitung alkalischer Spülwässer aus Wasch- oder Reinigungsmaschinen, dadurch gekennzeichnet, daß man a) den pH-Wert des alkalischen Spülwassers durch Kontakt mit Kohlendioxid soweit absenkt, daß eine Umkehrosmose-Membran von der Lösung nicht mehr angegriffen wird, wobei als Quelle für das Kohlendioxid zumindest anteilig das durch thermische Verwertung des durch anaeroben Abbau organischer Stoffe entstehenden Faulgases erhaltene Gasgemisch und/oder das durch aeroben Abbau organischer Stoffe entstehende Gasgemisch eingesetzt wird, b) die so erhaltene Lösung einer Unkehrosmose unterwirft und c) das erhaltene Permeat erneut für Spülzwecke einsetzt und das Konzentrat entsorgt.
(EN)
The disclosure relates to methods of treating alkaline rinse water from washing or cleaning machines, characterised in that: a) the pH value of the alkaline rinse water is lowered by contact with carbon dioxide until the solution ceases to attack a reverse osmosis membrane; at least a proportion of the carbon dioxide source is the gas mixture produced by heat treatment of the fermentation gas produced by anaerobic breakdown of organic substances and/or the gas mixture created by anaerobic breakdown of organic substances; b) the solution thus obtained is subjected to reverse osmosis; and c) the permeate obtained is re-used for rinsing and the concentrate disposed of.
(FR)
L'invention concerne un procédé de traitement d'eaux de rinçage alcalines provenant de machines de lavage ou de nettoyage comportant les étapes suivantes: a) le pH de l'eau de rinçage alcaline est abaissé par contact avec du dioxyde de carbone jusqu'à ce qu'une membrane d'osmose inverse ne soit plus attaquée par la solution, au moins une partie de la source de dioxyde de carbone utilisée étant le mélange gazeux obtenu par traitement thermique du gaz de curage produit par décomposition anaérobie de matières organiques et/ou le mélange gazeux produit par décomposition anaérobie de matières organiques, b) la solution ainsi obtenue est soumise à une osmose inverse et c) le perméat obtenu est à nouveau utilisé à des fins de rinçage et le concentré est évacué.
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