In the current regulatory climate, removal of trace levels of contaminants from refinery and chemical plant process water streams has become critical for compliance with environmental standards. The traditional and proven processes in this service are air stripping and steam stripping. Each has particular mechanical specifications that must be considered for proper operation. Chief among these are operating effectiveness, flexibility, materials selection, and fouling. Basic rules for areas of applicability of air stripping and steam stripping are presented. Two case studies, one for an air stripper and one for a steam stripper, are shown as successful applications of the stripping process for contaminant removal.
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