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Simultaneous treatment of SO2 containing stack gases and waste waterA process for simultaneously removing sulfur dioxide from stack gases and the like and purifying waste water such as derived from domestic sewage is described. A portion of the gas stream and a portion of the waste water, the latter containing dissolved iron and having an acidic pH, are contacted in a closed loop gas-liquid scrubbing zone to effect absorption of the sulfur dioxide into the waste water. A second portion of the gas stream and a second portion of the waste water are controlled in an open loop gas-liquid scrubbing zone. The second portion of the waste water contains a lesser amount of iron than the first portion of the waste water. Contacting in the openloop scrubbing zone is sufficient to acidify the waste water which is then treated to remove solids originally present.
Document ID
19790004413
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Poradek, J. C. (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Collins, D. D. (Chemsoil Corp. Bakersfield, Calif., United States)
Date Acquired
September 3, 2013
Publication Date
October 31, 1978
Subject Category
Environment Pollution
Accession Number
79N12584
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-4,123,355|NASA-CASE-MSC-16258-1
Patent Application
US-PATENT-APPL-SN-853705

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