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1. (WO1989000150) METHOD AND APPARATUS FOR PURIFICATION OF LIQUID MEDIUMS, ESPECIALLY WASTE WATER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1989/000150 International Application No.: PCT/SE1988/000075
Publication Date: 12.01.1989 International Filing Date: 19.02.1988
Chapter 2 Demand Filed: 02.03.1989
IPC:
C02F 1/52 (2006.01)
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1
Treatment of water, waste water, or sewage
52
by flocculation or precipitation of suspended impurities
Applicants:
JÄGSELL, Anders [SE/SE]; SE
Inventors:
JÄGSELL, Anders; SE
Agent:
AVELLAN-HULTMAN, Olle; Avellan-Hultman Patentbyrå AB Box 5366 S-102 46 Stockholm, SE
Priority Data:
8702737-102.07.1987SE
Title (EN) METHOD AND APPARATUS FOR PURIFICATION OF LIQUID MEDIUMS, ESPECIALLY WASTE WATER
(FR) PROCEDE ET APPAREIL PERMETTANT LA PURIFICATION DE MILIEUX LIQUIDES, NOTAMMENT D'EAUX USEES
Abstract:
(EN) A method and an apparatus for purification of waste water and other liquids by means of a known flocculent like lime, aluminum chloride, ferrous sulphate, ferrous chloride etc., whereby waste water or another liquid is continuously and under a turbulent movement mixed with a flocculent in a mixing chamber (13) from which the flocculent/water mixture is continuously transferred to one or several flocculation chambers (14-16), connected in series with each other, in which the flocculent/water mixture is continuously stirred and is allowed to stay for a predetermined period of time, during which flocks of nutrient salts, biochemically oxygen consuming substances and other water soluble ingredients of the water are precipitated in the form of flocks, whereupon the liquid with the flocks is drained to a sedimentation unit (1), in which the relatively heavy flocks and other heavy substances are allowed to sink to the bottom, from which they are removed as known per se, whereas the purified liquid of the sedimentation basin (1) is continuously let out to a recipient.
(FR) Procédé et appareil permettant la purification d'eaux usées et d'autres liquides au moyen de chaux connue analogue à un floculant, de chlorure d'aluminium, de sulfate ferreux, de chlorure ferreux etc., dans lesquels l'eau usée ou autre liquide est mélangée de manière ininterrompue et dans un mouvement turbulent, à un floculant dans une chambre de mélange (13), à partir de laquelle le mélange floculant/eau est transféré sans interruption à une ou plusieurs chambres de floculation (14-16) reliées en série les unes aux autres, dans lesquelles le mélange floculant/eau est brassé sans interruption et y séjourne pendant une période de temps prédéterminée. Pendant cette période de temps des flocons de sels nutritifs, des substances consommant biochimiquement de l'oxygène et d'autres ingrédients solubles dans l'eau sont précipités sous la forme de flocons, après quoi le liquide contenant les flocons est drainé à une unité de sédimentation (1), dans laquelle les flocons relativement lourds et autres substances lourdes peuvent décanter et sont retirées comme l'on sait, tandis que le liquide purifié du bassin de sédimentation (1) s'écoule sans interruption dans un récipient.
Designated States: DK, FI, HU, NO, US
European Patent Office (AT, BE, CH, DE, FR, GB, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: Swedish (SV)
Also published as:
NO19895258EP0364453