Comparison of Organic Matter Properties and Disinfection By-Product Formation between the Typical Groundwater and Surface Water

The disinfection by-product (DBP) formation was affected by the dissolved organic matter (DOM). Therefore, DOM properties and DBP potential of two most widely used source waters: groundwater (GW) surface water (SW), were comparatively studied in this work. results suggested that GW mainly consisted protein-like organics with smaller molecular weight (Mw) less than 3000 Da, while SW contained humic- fulvic-like substances larger Mw. tap concentration as lower well cytotoxic index (CI). total under chlorine chloramine higher GW, especially trihalomethanes (THMs) haloacetic acid (HAAs). THM HAA attributed to relatively hydrophobic aromatic humic fulvic substances. halonitromethanes (HANs) due components In addition, CI both disinfection. for DBPs control, using more beneficial human health.