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5552567 
Journal Article 
Point-of-Entry Treatment of Petroleum Contaminated Water Supplies 
Malley, JP; Eliason, PA; Wagler, JL 
1993 
1 
Water Environment Research
ISSN: 1061-4303
EISSN: 1554-7531 
65 
2 
119 
English 
WOS:A1993KY90000005 
The design and operation of point-of-entry (POE) systems at individual water wells to treat petroleum-contaminated water supplies were investigated. Two types of POE systems were evaluated, but each system included bubble plate aeration followed by a pressurized sand filter for iron removal. Four of the ten systems also contained pressurized-granular activated carbon (GAC) filters for additional VOC removal. At the ten sampling wells investigated, only one POE-treated water sample exceeded the maximum contaminant level (MCL) for benzene, and one sample exeeded the MCL for 1,2-dichloroethane. In most cases, the treated water concentrations for the VOCs were reduced to below detection limits. The GAC units consistently removed benzene, toluene, ethylbenzene, and the xylenes remaining after aeration down to their detection limits. Groundwater Fe and manganese did not markedly affect POE system performance. 
Environment Abstracts; TECHNOLOGY IMPACT ASSESSMENT; AERATION; WATER POLLUTION CONTROL; WATER WELLS; ACTIVATED CARBON ADSORPTION; WATER ANALYSIS; WATER POLLUTION RESEARCH; WATER POLLUTION EQUIPMENT; VOLATILE ORGANIC COMPOUNDS; WATER TREATMENT; BIODEGRADATION, MICROORGANISM; HYDROCARBONS, WATER; ENA 07:General