In-Situ Groundwater Treatment Technology Using Biodegradation

In-situ biorestoration has great potential for the remediation of contaminated subsurface environments. Many hazardous organic micropollutants can be transformed by microorganisms under proper environmental conditions. This study sought to identify those environmental factors necessary for satisfactory implementation and control of in-situ treatment technologies. Several in-situ biorestoration schemes are discussed in detail. Qualitative performance criteria were established as a means of evaluating in-situ groundwater restoration schemes, due to the heterogenous nature of the subsurface and the lack of basic knowledge on in-situ processes. Implementation of a generally applicable in-situ biorestoration strategy for all contaminated sites is not currently feasible. Continuation of laboratory experiments and implementation of site-specific pilot studies as well-characterized field sites are recommended.