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Main Title Comparison of ozone contactors for municipal wastewater effluent disinfection : packed column versus jet scrubber /
Author Venosa, Albert D.,
Other Authors
Author Title of a Work
Opatken, Edward J.,
Meckes, Mark C.,
CORP Author Municipal Environmental Research Lab., Cincinnati, OH. Wastewater Research Div.
Publisher Municipal Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency ; available to the public through the National Technical Information Service,
Year Published 1979
Report Number EPA-600/2-79-098
Stock Number PB80-118789
OCLC Number 06237867
Subjects Packed towers ; Scrubber (Chemical technology) ; Sewage--Purification--Ozonization
Additional Subjects Sewage treatment ; Ozonation ; Scrubbers ; Columns(Process engineering) ; Comparison ; Activated sludge process ; Coliform bacteria ; Disinfection ; Streptococcus ; Bacteria ; Utilization ; Equipment ; Column packings ; Pilot plants ; Microorganisms ; Performance evaluation ; Process charting ; Design ; Salmonella
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EHAM  TD747.V46 1979 Region 1 Library/Boston,MA 04/29/2016
EJBD  EPA 600-2-79-098 Headquarters Library/Washington,DC 03/21/2016
EKBD  EPA-600/2-79-098 Research Triangle Park Library/RTP, NC 07/04/2003
ELBD ARCHIVE EPA 600-2-79-098 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD  EPA 600-2-79-098 AWBERC Library/Cincinnati,OH 04/10/1998
ESAD  EPA 600-2-79-098 Region 10 Library/Seattle,WA 07/15/2005
NTIS  PB80-118789 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xvi, 77 pages : illustrations, charts ; 28 cm.
Pilot scale investigations were made comparing two ozone contactors, a jet scrubber and a packed column, for ozone utilization and effluent coliform reduction efficiency. The contactors were operated in three phases: (1) Batch operational phase contactors were operated separately under identical conditions on a batch sample of activated sludge effluent. (2) Parallel operational phase; both contactors were operated in parallel on the same activated sludge effluent. (3) Continuous operational phase; both contactors were operated on the same activated sludge effluent to achieve a specified coliform reduction. Results showed that the packed column significantly outperformed the jet scrubber with respect to microorganisms reduction. Effluent quality interfered with disinfection in both contactors, the most important variables being chemical oxygen demand (total and soluble) and organic carbon. Initial bacterial density and ozone residual were also important factors affecting log reduction of coliforms and fecal streptococci in both contractors. The packed column significantly outperformed the jet scrubber with respect to ozone utilization. Organic demand measured as TCOD, SCOD, and TOC significantly affected ozone utilization at high but not low ozone dosages. These results indicate that the use of a single stage jet scrubber type ozone contactor is not suitable for wastewater disinfection with ozone.
"Wastewater Research Division, Municipal Environmental Research Laboratory." "August 1979." Includes bibliographical references (pages 67-68).