Record Display for the EPA National Library Catalog

RECORD NUMBER: 17 OF 31

OLS Field Name OLS Field Data
Main Title Investigation of a High-Pressure Foam Waste Water Treatment Process.
Author Mille, James K. P. ; Legatsk, L. Karl ;
CORP Author Garrett Research and Development Co., Inc., La Verne, Calif.
Year Published 1970
Report Number 05156,; 17030-ESX
Stock Number PB-197 863
Additional Subjects ( Sewage treatment ; Chemical removal(Sewage treatment)) ; ( Flotation ; Sewage treatment) ; High pressure tests ; Dissolved gases ; Air ; Organic compounds ; Phosphates ; Particles ; Coagulants ; Pilot plants ; Cost estimates ; Iron chlorides ; Equipment ; Foam fractionation
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB-197 863 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 39p
Abstract
The technical and economic feasibility of the separation of organic materials and other contaminants from primary and secondary sewage effluent by a foam fractionation-flotation process was studied. Air-waste water mixtures were held at pressures above 150 psi for from 6 to 25 minutes and then bled to a release vessel where pressures were reduced to atmospheric. Soluble organic and particulate matter collected at the bubble-water interfaces of the fine bubbles being evolved from the supersaturated liquid. Effects of varying flow rate, pressure, contact time, and of different release vessels and additives were studied. 70%, 90%, and 40-80% reductions of COD, phosphates, and suspended solids were effected at optimum conditions of air-to-water volume ratios of 2.17 to 1, pressures greater than 175 psi, and with 300-400 mg/l alum or ferric chloride as coagulants. Estimated costs, exclusive of chemicals were 5 cents/1000 gallons for a 10 mgd plant. (WRSIC abstract)