Tag Archives: biological

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. Continue reading

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Perchlorate Groundwater Investigation, Barstow, California


The Salton Sea, 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 and identified remediation alternatives.

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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 … Continue reading

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Wastewater Characterization, Compañía Cervecera de Nicaragua (Toña), Central America


Central American Brewery
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

Secondary Clarifiers
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 system.

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