Continuous treatments of synthetic groundwater by an
in situdenitrification and ...
Long-term continuous treatments of synthetic groundwater containing 15.06 ± 0.55 mg-N/L nitrate were conducted using an in situ denitrification and oxidation process under different operating conditions. In the experiments, electrolytic hydrogen and oxygen were injected upstream and downstream in a laboratory-scale aquifer, respectively, and measurements were made for nitrate, nitrite, pH, dissolved oxygen, dissolved hydrogen, total organic carbon (TOC), turbidity, and chromaticity. Experimental results...
Safe and Simple Excavation Application Provides Long-Term Treatment, UK
In Situ Treatment of Residual TPH Contamination Following Tank Removal Remediation Details Site Type: Petrol Filling Station Project Driver: Site Redevelopment Remediation Approach: Enhanced Aerobic Biodegradation, Excavation application Technologies: ORC-Advanced* Pellets SummaryDuring the demolition and redevelopment of a former petrol filling station, an underground storage tank was removed. The tank had been used for the storage of diesel and had leaked into the surrounding soils and groundwater....
In situ Remediation of 1,4-Dioxane using Electrical Resistance Heating
An increasing number of states are establishing enforceable 1,4-dioxane cleanup goals due to recent improvements in analytical detection methods and existing carcinogenic risk information for 1,4-dioxane. Historically, 1,4-dioxane was used as a stabilizer for chlorinated solvents, primarily 1,1,1-trichloroethane. In addition, 1,4-dioxane has been used in a broad range of products including but not limited to paint, antifreeze, shampoos, cosmetics, aircraft deicing fluid, and fumigants. If released, 1,4-dioxane...
Loveland Case Study (In SItu Gas Thermal Remediation (GTR™))
The Loveland Sinclair gasoline station was selected for In-Situ Thermal Remediation (ISTR) using Gas Thermal Remediation (GTR) technologies. The GTR remediation system was designed to target a treatment area of approximately 14,000 square feet and includes a treatment volume of approximately 3,100 cubic yards. Vadose and saturated zone impacts, including a thin layer of light non-aqueous phase liquid (LNAPL) will be treated to drinking water standards. Geology: Clay, Silty Clay
In Situ Sediment Treatment Using Activated Carbon: A Demonstrated Sediment Cleanup Technology
This paper reviews general approaches for applying activated carbon (AC) amendments as an in situ sediment treatment remedy. In situ sediment treatment involves targeted placement of amendments using installation options that fall under two general approaches: 1) direct application of a thin layer of amendments (which potentially incorporate weighting and/or binding materials) to surface sediment, with or without initial mixing; and 2) incorporation of amendments into a pre‐mixed blended cover material of clean...