Effects of Pollutants on the Mineralization of Acetate in Subsoil and SoilMicrocosms

摘要

Groundwater is a major source of drinking water in many countries. This sourcegets more and more polluted by organic and inorganic micropollutants. Sorption and dispersion do not effectively remove pollutants when they have reached the groundwater. These bacteria also inhibit the survival and regrowth of pathogens in groundwater and drinking water by removing the organic substrates which the pathogens need for susvival. The method for evaluating the effect of pollutants on the subsoil microflora described, uses the original subsoil microflora under conditions simulating the local subsoil conditions. The author used a fresh aseptic sampled subsoil which is incubated with added groundwater and a very low concentration of 14C labeled substrate. The low concentration of substrate does not enable bacteria to grow, which ensures that we are working with the original subsoil microflora. High concentrations of substrate would allow the small part of the microflora which is able to grow rapidly, to overgrow the rest.