Effect of spray aeration on unregulated drinking water disinfection byproducts

Spray aeration is a comparatively low-cost option to reduce trihalomethane (THM) concentrations in distribution system storage. The effect of spray on unregulated, toxic disinfection by-products was investigated bench-scale apparatus closed-tank and open-tank experiments. In the experiments, initially over 90% THMs, trichloroacetonitrile, chloropicrin were removed, while 36% dihaloacetonitriles removed. However, due buildup tank headspace, removal rates for all compounds decreased significantly with time, falling 44% 76% 58% chloropicrin. Removal zero. THM high did not decrease time. Considering results open closed tanks as approximate bounds performance expected under real-world conditions storage tanks, findings suggest that may haloacetonitrile-related toxicity halonitromethane-related be reduced.