Title:
【発明の名称】炭化水素による、炭化水素汚染水の濾過の方法及び装置
Document Type and Number:
Japanese Patent JP2001505484
Kind Code:
A
Abstract:
A method for filtering hydrocarbon contaminated water for separation and recovery of the contaminants and recirculation of the water, wherein the water contaminated by hydrocarbons is, in a series of successive stages, caused to flow down through a cushion of a filtering hydrocarbon that floats on a defined surface of a water body and is permitted to flow via an underflow into the free portion of the water body prior to transfer via an overflow to the next stage, and where, in a final stage, approximately anhydrous hydrocarbon is drawn off as overflow while hydrocarbon-free water is removed as underflow, is carried out with the aid of an apparatus which, in operable state, comprises a series of successive basins filled with water (2, 3, 4) separated by walls (22, 23), where an upper part of each basin is bounded by means of fixed partition walls (32, 33) projecting downward in the water and is filled with a filtering hydrocarbon (12, 13, 14), where the final cushion of filtering hydrocarbon (14) downstream is bordered by a vertically displaceable outlet bin (47) for the contamination enriched hydrocarbon, and further comprising a water outlet (5, 6, 7, 8) comprising two successive horizontal watercourses (5, 6), having a declining ceiling (10, 11) in the direction of flow, and thereafter a vertical S-pipe (7, 17) having an outlet (8).
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Inventors:
Helge, Pedersen
Pedersen, Jan Erik
Pedersen, Jan Erik
Application Number:
JP52596698A
Publication Date:
April 24, 2001
Filing Date:
December 10, 1997
Export Citation:
Assignee:
Helge, Pedersen
Pedersen, Jan Erik
Pedersen, Jan Erik
International Classes:
B01D17/02; B01D17/028; B01D17/025; C02F1/40; (IPC1-7): C02F1/40; B01D17/025
Attorney, Agent or Firm:
Heiyoshi Odashima (1 person outside)