Liquid purification or separation – Processes – Chemical treatment
Patent
1993-09-09
1995-07-18
Wyse, Thomas
Liquid purification or separation
Processes
Chemical treatment
210766, 210903, C02F 158
Patent
active
054338689
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.
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Third Edition--Wastewater Engineering Treatment, Disposal, and Reuse; edited by George Tchobanoglous and Franklin L. Burton; published by Metcalf & Eddy, Inc.; 1991, pp. iv, 132, and 894.
A G Fassbender; STORS and NitRem: Sludge-to-Oil Conversion and Nitrogen Removal for Waste Water Treatment Plants; May 14, 1991, pp. 1 through 8+two (2) drawings.
Wyse Thomas
Zimmerman Paul W.
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