Removing organic color and by-products from groundwater with ozone and pressurized biologically-active filtration

Ozone oxidation and pressurized biologically active filtration treatments w ere tested for the removal of organic color and by-products from a highly c olored groundwater. Ozone oxidation greatly reduced the color level of untr eated groundwater. Following ozone oxidation, pressurized biologically acti ve filtration provided good removal of assimilable organic carbon. Both chl orine and chloramine disinfectants were equally effective in reducing the h eterotrophic plate counts. Chloramines were found to be much more effective than chlorine in controlling the formation of by-products.