Membrane Degassing

Degassing of drinking water and wastewater are practiced to remove dissolved hydrogen sulfide and other gases, such as carbon dioxide, oxygen, etc. Traditional approaches have used either chemicals that consume the gas to be removed, such as chlorine in drinking water to remove the bad taste of dissolved hydrogen sulfide, or using standard tray or packed bed strippers with either air or carbon dioxide. The major problems with these approaches have been creation of by-products, such as halocarbons with chlorine in drinking water systems, or large expense involved in pressurizing air and using stored carbon dioxide. Membrane Degassing systems effectively use a membrane barrier and vacuum on the other side of the membrane to remove the dissolved gas.

PRD Tech, Inc. recently has installed a membrane degassifier for Drinking Water in Florida that renders many benefits compared to the traditional tray aerators. Benefits include enhanced security of the drinking water supply, effective removal of dissolved hydrogen sulfide, compact footprint, and increased reliability. In wastewater systems, major benefits include the elimination of compressors, spargers, significant reduction of operating cost and generation of a small volume of concentrated hydrogen sulfide stream instead of a very large air flowrate with low concentration of hydrogen sulfide which is an odor issue.