Title:
SYSTEM AND METHOD FOR TREATMENT OF ACIDIC WASTEWATER
Document Type and Number:
WIPO Patent Application WO2005009908
Kind Code:
A3
Abstract:
A wastewater treatment system comprising separation unit operations inhibits or promotes the formation and precipitation of species by controlling the pH of wastewater to be treated entering into the separation unit operations. The separation unit operations include first and second reverse osmosis devices. The first reverse osmosis device treats wastewater having pH that is less than about 3.5 and the second reverse osmosis device treats wastewater, from the first reverse osmosis device, having a pH that is about 6 or higher.
Inventors:
NAGGHAPPAN LNSP (US)
HELWICK ROBERT P (US)
HELWICK ROBERT P (US)
Application Number:
PCT/US2004/024179
Publication Date:
May 19, 2005
Filing Date:
July 26, 2004
Export Citation:
Assignee:
OTV SA (FR)
NAGGHAPPAN LNSP (US)
HELWICK ROBERT P (US)
NAGGHAPPAN LNSP (US)
HELWICK ROBERT P (US)
International Classes:
B01D61/02; B01D61/04; B01D61/12; C02F1/44; C02F1/66; C02F1/28; C02F1/42; C02F1/52; C02F1/56; C02F1/76; C02F9/00; (IPC1-7): C02F1/52; C02F1/44; C02F9/00; C02F1/58; C02F1/60; C02F1/62; C02F1/66
Domestic Patent References:
| WO2003008336A2 | 2003-01-30 | |||
| WO2002068338A2 | 2002-09-06 |
Foreign References:
| US20030080067A1 | 2003-05-01 | |||
| US6398965B1 | 2002-06-04 | |||
| US6071413A | 2000-06-06 | |||
| US6113797A | 2000-09-05 | |||
| US6338803B1 | 2002-01-15 | |||
| US5766479A | 1998-06-16 |
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