Characteristics of Natural Organic Matter (NOM) Surrogates Under Different Disinfection Processes

摘要

In this study, Natural Organic Matter (NOM) surrogates which is represented by Total Organic Carbon (TOC), absorption of UV-light (UV _( 254 ) ) and Specific Ultraviolet Absorption (SUVA) value was used to characterize organic matter in water treatment process under different disinfection processes. The reduction of NOM surrogates was also examined at the same time. The results show that TOC has been reduced to 26% under coagulation with ferric chloride, insignificantly removal in sedimentation and 39% removal in filtration with activated carbon. During disinfection, TOC reduction is higher than other NOM surrogates. Effect of disinfection processes, dosage and reaction time to NOM surrogates reduction indicated that NOM decrease with increasing reaction time, increasing dosage caused increasing reduction of NOM and UV disinfection contributed to the higher degree processes of organic matter than chlorination disinfection.