Tag: biological
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Soil Vapor Extraction and Air Sparge Operation, California Refinery
A global oil and gas corporation commissioned the operation and maintenance of a soil and groundwater remediation system designed an active California refinery.
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Perchlorate Groundwater Investigation, Barstow, California
A Southern California regulatory agency suspected that illegal disposal of perchlorate had impacted the soil and groundwater of a residential property located in Barstow, California. A groundwater investigation project was conducted at a suspected source of perchlorate site, and extended 1.5 miles offsite. The groundwater investigation project fully delineated the extension of perchlorate impacted groundwater…
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Biological Reduction of Selenium, Nitrates, Chromium, and Perchlorate
Description of the Biological Reduction Process Biological treatment is used in a wide range of water and wastewater treatment applications for the removal of biodegradable constituents. The biological treatment process can also be modified and used to reduce nitrates, oxides of selenium, hexavalent chrome, and perchlorate in water. The reduction of nitrates and perchlorate can…
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Wastewater Characterization, Compañía Cervecera de Nicaragua (Toña), Central America
SVE is an in-situ remediation technology designed to remediate soils impacted with VOC’s including gasoline range organics, and chlorinated hydrocarbons. This technology works by extracting a soil vapor from the subsurface at a high vacuum and remediate soil in the vadose zone.
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Biological Wastewater Treatment and Operations Training in Argentina
A wastewater treatment process at a potato processing plant located in Argentina was experiencing continuous upsets with their activated sludge treatment system. A hands-on training program was implemented to teach operators to monitor and control the two existing biological treatment processes consisting of a low rate anaerobic wastewater treatment pre-treatment and an activated sludge treatment…