Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, No. 27 Shanda South Road, Jinan, 250100, Shandong, People's Republic of China.
Environ Sci Pollut Res Int. 2017 Jul;24(21):17945-17954. doi: 10.1007/s11356-017-9451-1. Epub 2017 Jun 15.
Effects of ozonation and powdered activated carbon on removal of dissolved organic matter (DOM) and disinfection by-product (DBP) in reservoir water were intensively investigated in this study. Both the formation of carbonaceous DBP (C-DBP) and nitrogenous DBP (N-DBP) as well as their speciation were analyzed. Results exhibited that the addition of powdered activated carbon (PAC) greatly improved the removal of aromatic protein. Trihalomethanes (THMs) and haloacetonitriles (HANs) were the dominant species in C-DBP and N-DBP. The integrated coagulation and PAC processes could remove more than 70% of THMs and 93% of HANs precursors, while only 10.5 and 45% of capture were achieved by the single coagulation. The added ozone lowered the yields of HANs but synchronously increased the more toxic bromine-containing THMs from 78.5 to 128.1 μg/L. Kinetics parameters for THM formation indicated that the precursor creating the THMs fast could be easily removed by both the coagulation and PAC adsorption.
本研究深入研究了臭氧化和粉末活性炭对水库水中溶解性有机物（DOM）和消毒副产物（DBP）去除的影响。分析了碳质 DBP（C-DBP）和氮质 DBP（N-DBP）的形成及其形态。结果表明，添加粉末活性炭（PAC）大大提高了芳香族蛋白质的去除率。三卤甲烷（THMs）和卤乙腈（HANs）是 C-DBP 和 N-DBP 中的主要物质。综合混凝和 PAC 工艺可去除超过 70%的 THMs 和 93%的 HANs 前体，而单一混凝仅可去除 10.5%和 45%的前体。添加的臭氧降低了 HANs 的产率，但同时将毒性更大的含溴三卤甲烷从 78.5μg/L 增加到 128.1μg/L。THM 形成的动力学参数表明，THMs 的快速前体可通过混凝和 PAC 吸附很容易地去除。
