Looking at chlorination in a new light: Solar photolysis of chlorine to ozone and hydroxyl radical for inactivation of chlorine-resistant microorganisms

摘要

1.FAC photolysis can enhance inactivation ofrnchlorine-resistant microorganisms duringrnchlorination, due to in situ formation of O3 and HO•.rn2.Solar photolysis of FAC can inactivate highlyrnresistant bacterial endospores (> 3-log), C. parvumrnoocysts (~1-log), and M. avium cells (> 3-log ) withinrntypical FAC exposure ranges. Significantly higherrnoocyst inactivation can be achieved at modestlyrnhigher FAC exposures.rn3.Our findings may provide the basis for design of novel, low-energyrnapproaches to achieving inactivation of highly FAC-resistant pathogens inrncentralized and decentralized water treatment.