Electrical resistance heating remediation

Electrical Resistance Heating Remediation (ERH) is a technology used for the remediation of contaminated soil and groundwater. It is a form of thermal remediation that uses electrical energy to heat the subsurface, thereby enhancing the removal of contaminants.

Overview

ERH is a process that involves the application of an electrical current to the subsurface to heat the soil and groundwater. The heat generated by the electrical current increases the volatility of the contaminants, making them easier to remove. The process is typically used to treat contaminants such as chlorinated solvents, petroleum hydrocarbons, and other organic compounds.

Process

The ERH process begins with the installation of electrode wells in the contaminated area. An electrical current is then applied to the electrodes, which heats the subsurface. The heat generated by the electrical current increases the volatility of the contaminants, causing them to vaporize. The vaporized contaminants are then extracted from the subsurface and treated or disposed of.

Applications

ERH is used in a variety of applications, including the remediation of contaminated industrial sites, brownfield sites, and military bases. It is also used in the cleanup of oil spills and other environmental disasters.

Advantages and Disadvantages

One of the main advantages of ERH is that it can be used to treat a wide range of contaminants. It is also a relatively fast and efficient method of remediation. However, ERH can be expensive to implement and may not be suitable for all types of soil and groundwater conditions.

See Also

• Soil vapor extraction
• Thermal desorption
• In situ thermal desorption