Title:
WASSER STILL WITH PERVAPORATION MEMBRANE AND METHOD OF OPERATION THEREOF
Document Type and Number:
WIPO Patent Application WO2001010784
Kind Code:
A3
Abstract:
A mechanical water still (10) includes an imprevious dome-like upper surface (12) and a membrane base (14) that is coupled (26) to the imprevious dome-like structure (12) to form, when inflated, a chamber (20). The membrane base (14) supports a water pervaporation process therethrough. A water collection well (16) has an opening into which water droplets condensed from the water pervaporation process collect. The water collection well (16) is sited within the membrane base (14) and generally extends outwardly and downwardly from the membrane base (14), as shown (in fig.1). In use, a contaminated water source (24) is brought into, ideally, complete contact with the membrane base (14), with the water collection well (16) arranged both to act as a heat sink into the water source (24) and to provide stability to the water still (10) when floating and immersed in the water source (24).
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Inventors:
TONKIN MARK CHRISTOPHER
YOUNG MARK ANDREW
ECKERT NEIL DAVID
YOUNG MARK ANDREW
ECKERT NEIL DAVID
Application Number:
PCT/US2000/021154
Publication Date:
June 14, 2001
Filing Date:
August 03, 2000
Export Citation:
Assignee:
DU PONT (US)
DESIGN TECH & IRRIGATION LTD (GB)
DESIGN TECH & IRRIGATION LTD (GB)
International Classes:
B01D61/36; B01D71/52; C02F1/14; C02F1/44; C02F103/08; (IPC1-7): C02F1/44; B01D61/36
Foreign References:
| US3415719A | 1968-12-10 | |||
| US4219387A | 1980-08-26 | |||
| US4725481A | 1988-02-16 | |||
| EP0139880A1 | 1985-05-08 | |||
| US5595662A | 1997-01-21 | |||
| GB2116057A | 1983-09-21 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 013, no. 208 (C - 596) 16 May 1989 (1989-05-16)
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