U.S. EPA Superfund Innovative Technology Evaluation (SITE) Program
ZenoGem™ Wastewater Treatment Process
Zenon Environmental Systems

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ZenoGem™ Wastewater Treatment Process, Zenon Environmental Systems (276KB) 

Abstract

Zenon Environmental System's ZenoGem™ Wastewater Treatment Process treats aqueous media contaminated with volatile/semi-volatile organic compounds. This technology combines aerobic biological treatment to remove biodegradable organic compounds with ultrafiltration to separate residual suspended solids from the waste. Following influent pretreatment, the mixed liquor is maintained under aerobic conditions in a bioreactor for a sufficient length of time to allow the microorganisms to metabolize the organic material. Ultrafiltration is accomplished under continuous pressure that removes some dissolved contaminants and all suspended solids from the mixed liquor. The filtered effluent may require additional treatment prior to discharge. This technology was demonstrated at Nascolite Superfund site, Millville, New Jersey during September 1994 through November 1994 where it treated approximately 30,000 gallons of groundwater contaminated with methyl methacrylate (MMA). The technology was evaluated in terms of MMA and chemical oxygen demand (COD) removal efficiency. MMA influent concentrations varied from 1,300 mg/L to 3,600 mg/L and COD concentrations ranged from 1,500 mg/L to 7,500 mg/L. Flow rates for the demonstration ranged from 350 gpd to 500 gpd. Effluent MMA concentration for permeate varied from 0.02 mg/L to 17.0 mg/L and treated effluent concentrations ranged from < 0.02 mg/L to 0.30 mg/L. Permeate COD ranged from 10.0 mg/L to 1,200 mg/L and treated effluent concentrations ranged from 45.0 mg/L to 1,300 mg/L (> 95% removal efficiency for MMA and COD).

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Posted October 1, 1999

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