Title:
SEWAGE TREATMENT APPARATUS AND METHOD
Document Type and Number:
WIPO Patent Application WO/1995/007238
Kind Code:
A1
Abstract:
The invention greatly reduces the amount of ammonia in sewage plant effluent. The process of the invention has three main steps. The first step is dewatering without first digesting, thereby producing a first ammonia-containing stream having a low concentration of ammonia, and a second solids-containing stream. The second step is sending the second solids-containing stream through a means for separating the solids from the liquid and producing an aqueous stream containing a high concentration of ammonia. The third step is removal of ammonia from the aqueous stream using a hydrothermal process.
Inventors:
FASSBENDER ALEX G
Application Number:
PCT/US1994/009858
Publication Date:
March 16, 1995
Filing Date:
September 02, 1994
Export Citation:
Assignee:
BATTELLE MEMORIAL INSTITUTE (US)
International Classes:
C02F1/02; C02F1/58; C02F9/00; C02F1/76; C02F11/08; C02F11/12; (IPC1-7): C02F1/02; C02F11/08
Domestic Patent References:
| WO1992018426A1 | 1992-10-29 |
Foreign References:
| EP0377832A2 | 1990-07-18 |
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