The effect of preliminary ozonization on the bioregeneration of activated carbon during its long-term service

The activated carbon (AC) bioregeneration was shown to proceed more efficiently during the filtration of preozonized tap water as compared with bioregeneration under the similar conditions during the filtration of non-ozonized water. The enhanced efficiency of AC bioregeneration after the filtration of preozonized water is determined by transformation of the total organic carbon into a better biodegrading form, increased microbiological activity in the depth of AC bed, and enhanced hydrophilicity of the AC surface area due to its chemical interaction with dissolved ozone.