What are the main differences between the TRS ERH Process and ETDSP?
First Major Difference – the method of electrode hydration Unlike ETDSP, the TRS ERH Process does not rely on pumping large volumes of water into the subsurface. The TRS ERH Process relies in part on the addition of a small amount of water that is slowly dripped (e.g. a gallon or two per hour) into the electrode to maintain moisture and conductivity at the soil-electrode interface. The TRS method of water hydration eliminates the potential for developing an artificial hydraulic gradient that could cause lateral or vertical contaminant migration. The net effect of the TRS ERH Process is that water in the form of steam is removed from the subsurface where it is managed in accordance with regulations. TRS removes net water from the site and thus applies a measure of hydraulic control. ETDSP also has higher electrical costs because it must continually heat cool water that is injected into the electrodes. Second Major Difference – the proper combination of ERH with vapor, steam, and multi-p
