Permeable reactive barriers are for treating contaminated groundwater impacted by VOCs.

Permeable reactive barriers (PRBs) arein situ structures installed across the flow path of a contaminated groundwater plume, treating contamination as it passes through while allowing unimpeded ground waterflow.

Treatment agents with the permeable reactive barriers (PRBs), including zero-valent iron, chelators, sorbents, compost, and microbes, either degrade contaminates to non-toxic end products or retain them in a concentrated form within the barrier material, which may need to be replaced periodically.

Before work can begin, it is often necessary to clear the site of any existing structures, vegetation, and waste.