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RECORD NUMBER: 6 OF 61

OLS Field Name OLS Field Data
Main Title An investigation of light-catalyzed chlorine oxidation for treatment of wastewater /
Author Meiners, Alfred F. ; Lawle, Elizabeth A. ; Whitehea, Mary E. ; Morriso, John I.
Other Authors
Author Title of a Work
Lawler, Elizabeth A.
Whitehead, Mary E.
Morrison, John I.
CORP Author Midwest Research Inst., Kansas City, Mo.
Publisher U.S. Dept. of the Interior,
Year Published 1968
Report Number TWRC AWTRL 3; DI-14-12-72
Stock Number PB-187 757
OCLC Number 54352101
Subjects Sewage--Purification.
Additional Subjects ( Water pollution ; Purification) ; ( Ultraviolet radiation ; Water pollution) ; ( Wastes(Sanitary engineering) ; Oxidation) ; ( Chlorine ; Wastes(Sanitary engineering)) ; Oxidation ; Cost effectiveness ; Phenols ; Nitrobenzenes ; Nitrophenols ; Formic acids ; Water treatment ; Sewage treatment
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EMBD  PB-187757 GWERD Library/Ada,OK 04/30/2004
NTIS  PB-187 757 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation v, 121 pages : illustrations, charts, graphs ; 28 cm.
Abstract
A study was made of the effect of ultraviolet radiation on the rate and extent of chlorine oxidation of organic material in highly nitrified effluents from biological sewage treatment plants. Ultraviolet radiation will very significantly increase the rate of this reaction. Also, the extent of oxidation which can be achieved by chlorine combined with UV radiation is usually much greater than that which can be achieved by chlorine alone. The rate of the catalytic oxidation is dependent upon pH, and the most rapid rate of oxidation and most efficient use of chlorine are obtained at pH 5. The rate of organic oxidation is not proportional to the chlorine concentration; however, the rate of chlorine consumption is. Large excesses of chlorine do not increase the reaction rate but simply increase the amount of chlorine required to eliminate a given amount of organic matter. The rate and extent of the catalytic organic oxidation at pH 5 are not significantly affected by temperature. However, both the rate and extent of catalytic oxidation are substantially reduced by the presence of ammonia in an effluent. A brief investigation of the scope of the UV-catalyzed chlorine oxidation indicated that phenol, 2,4-dinitrophenol, glycine, formic acid, and o-dinitrobenzene are oxidized rapidly and extensively. On the basis of organic oxidation rate produced per watt of UV output, high-pressure mercury arcs are about 2.7 times more efficient than low-pressure mercury arcs. Process costs of 7.2 cent to 11.1 cent/1000 gal. were estimated, based on several types of commercially available lamps. (Author)
Notes
Includes bibliographical references (page 121). Microfiche.