E-Redox^® (O) for Petroleum Contaminants

• UST Site in South Dakota
• Active fuel station and residential area in Denver, CO
• Active Fuel Station in Littleton, CO
• Former bulk plant in Lafayette, CO

Ø  Petroleum-contaminated sediments (Lab Study).

     Application of E-Redox^® (O) increased the biodegradation rate of TPH-D by 13 x folds, maintained elevated DO concentration in the overlaying water; while the control sediments had low natural attenuation rate and remained anoxic.

 

E-Redox^® (O) Substituting Wastewater Aeration

Ø  A pilot E-Redox^® (O) system (1,350 gal) at a municipal treatment plant in eastern China.

     E-Redox^® (O) system achieved similar COD and N removal as an existing aerobic MBR system under similar HRT and other operational parameters, with no aeration and zero energy input.

Ø  A pilot E-Redox^® (O) system (1,350 gal) at a municipal treatment plant in Beijing China.

     E-Redox^® (O) system achieved similar COD and N removal by substituting 50-100% aeration in an aeration ditch, realizing significant savings by eliminating energy input.

 

E-Redox^® (I) Treating TCE, PAH, Perchlorate, and Nitrate 

• 1,4-Dioxane reduction at a former adhesive plant in SE US
• Reduction of chlorinated VOCs at a state government site in Alaska
• Reduction of PCE at a former dry cleaner site in Wheat Ridge, CO

Ø  Chlorinated VOCs reduction at a former adhesive plant in SE US

Ø  A pilot E-Redox^® (I) system at a perchlorate-impacted site in western USA.

     E-Redox^® (I) significantly reduced perchlorate and initiated mass movement in groundwater.

Ø  An E-Redox^® (I) system at a PAH-impacted site in eastern China.

     E-Redox™ (I) destructed >90% of naphthalene and 40-50% of other PAH compounds in soil after 2-week treatment, exceeding the efficiency of a ChemOx treatment.  

Ø  An E-Redox^® (I) system reduced nitrate in groundwater from >4,000 mg/L to non-detect within 2 weeks (Lab Study).

 

Source Treatment of AMD/ARD

Ø  Source Treatment of AMD at a reclaimed coal mine in eastern USA. 

     Geophysical survey and source treatment technology (STT) were used to identify the source and shielded AMD from generation. The STT also removed metals and raised pH in the downgradient groundwater within a few months.

Ø  Source Treatment of ARD (Lab Study).

     STT effectively coated the field-collected rocks that caused ARD at a mining site in Arizona, USA. The effectiveness lasted through cycles of simulations of dry and wet seasons.

PBEC

ØPBEC-enhanced treatment of eutrophic lake sediments.