Grunnvannssanering

Grunnvannssanering refers to the process of cleaning or remediating contaminated groundwater. This contamination can originate from various sources, including industrial spills, leaking underground storage tanks, agricultural runoff, and improperly managed landfills. The goal of grunnvannssanering is to remove or neutralize pollutants to protect human health and the environment.

There are several methods used for groundwater remediation. In-situ methods involve treating the contamination in place, without excavating the soil or pumping out the groundwater. Examples include bioremediation, where microorganisms are used to break down contaminants, and chemical oxidation or reduction, where chemicals are injected to transform pollutants into less harmful substances.

Ex-situ methods, on the other hand, require extracting the contaminated groundwater or soil for treatment. Pump-and-treat systems are common, where groundwater is pumped to the surface and treated using methods like activated carbon filtration, air stripping, or chemical precipitation. Excavation and disposal of contaminated soil is another ex-situ approach, though it is often more costly and disruptive.

The choice of remediation technique depends on factors such as the type and concentration of contaminants, the geological characteristics of the site, and regulatory requirements. Effective grunnvannssanering is crucial for restoring groundwater quality and preventing the spread of pollution to other environmental media and drinking water sources.