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Title: Method for processing aqueous wastes

Abstract

A method is presented for treating waste water such as that from an industrial processing facility comprising the separation of the waste water into a dilute waste stream and a concentrated waste stream. The concentrated waste stream is treated chemically to enhance precipitation and then allowed to separate into a sludge and a supernate. The supernate is skimmed or filtered from the sludge and blended with the dilute waste stream to form a second dilute waste stream. The sludge remaining is mixed with cementitious material, rinsed to dissolve soluble components, then pressed to remove excess water and dissolved solids before being allowed to cure. The dilute waste stream is also chemically treated to decompose carbonate complexes and metal ions and then mixed with cationic polymer to cause the precipitated solids to flocculate. Filtration of the flocculant removes sufficient solids to allow the waste water to be discharged to the surface of a stream. The filtered material is added to the sludge of the concentrated waste stream. The method is also applicable to the treatment and removal of soluble uranium from aqueous streams, such that the treated stream may be used as a potable water supply. 4 figures.

Inventors:
; ; ;
Issue Date:
OSTI Identifier:
5263092
Patent Number(s):
5273661
Application Number:
PPN: US 7-839540
Assignee:
PTO; EDB-94-052603
DOE Contract Number:  
AC09-89SR18035
Resource Type:
Patent
Resource Relation:
Patent File Date: 21 Feb 1992
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; LIQUID WASTES; WASTE PROCESSING; WASTE WATER; INDUSTRIAL WASTES; MATERIALS RECOVERY; TECHNOLOGY ASSESSMENT; HYDROGEN COMPOUNDS; MANAGEMENT; OXYGEN COMPOUNDS; PROCESSING; WASTE MANAGEMENT; WASTES; WATER; 320305* - Energy Conservation, Consumption, & Utilization- Industrial & Agricultural Processes- Industrial Waste Management

Citation Formats

Pickett, J B, Martin, H L, Langton, C A, and Harley, W W. Method for processing aqueous wastes. United States: N. p., 1993. Web.
Pickett, J B, Martin, H L, Langton, C A, & Harley, W W. Method for processing aqueous wastes. United States.
Pickett, J B, Martin, H L, Langton, C A, and Harley, W W. Tue . "Method for processing aqueous wastes". United States.
@article{osti_5263092,
title = {Method for processing aqueous wastes},
author = {Pickett, J B and Martin, H L and Langton, C A and Harley, W W},
abstractNote = {A method is presented for treating waste water such as that from an industrial processing facility comprising the separation of the waste water into a dilute waste stream and a concentrated waste stream. The concentrated waste stream is treated chemically to enhance precipitation and then allowed to separate into a sludge and a supernate. The supernate is skimmed or filtered from the sludge and blended with the dilute waste stream to form a second dilute waste stream. The sludge remaining is mixed with cementitious material, rinsed to dissolve soluble components, then pressed to remove excess water and dissolved solids before being allowed to cure. The dilute waste stream is also chemically treated to decompose carbonate complexes and metal ions and then mixed with cationic polymer to cause the precipitated solids to flocculate. Filtration of the flocculant removes sufficient solids to allow the waste water to be discharged to the surface of a stream. The filtered material is added to the sludge of the concentrated waste stream. The method is also applicable to the treatment and removal of soluble uranium from aqueous streams, such that the treated stream may be used as a potable water supply. 4 figures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {12}
}