Miao Yu, Zhai Hong-Yan, Yu Shan-Shan, Zhang Jing, Shi Chang-Xiang
Tianjin Engineering Center of Urban River Eco-Purification Technology, School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China.
Jiuquan Satellite Launch Center, Jiuquan 732750, China.
Huan Jing Ke Xue. 2017 Sep 8;38(9):3738-3746. doi: 10.13227/j.hjkx.201612169.
The removal efficiencies of algal organic matter (AOM) and typical nitrogenous and non-nitrogenous disinfection by-products (DBPs) through adsorption with powder activated carbon (PAC) were investigated. Three-dimensional fluorescence spectroscopy confirmed that PAC adsorption changed the composition of AOM. PAC adsorption showed high removal efficiency for humus-like substances in AOM, but limited removal efficiency for aromatic protein-like substances. When the dosage of PAC was 20 mg·L and the adsorption time ranged from 10 to 30 min, the removal rates of 3.30 mg·L dissolved organic carbon were 20.7%-31.9% for intracellular organic matter (IOM) and 12.6%-19.0% for extracellular organic matter (EOM). The highest removal rates of trihalomethanes by PAC in the chlorination of IOM and EOM were 26.6% and 35.8%, respectively. The highest removal rates of haloacetonitriles were 49.6% and 53.6% in the chlorination of IOM and EOM. The removal of dibromoacetonitrile precursors by PAC was significant. In summary, the PAC had a higher efficiency in reducing the generation of DBPs in EOM chlorination than in IOM chlorination.
研究了粉末活性炭（PAC）对藻类有机物（AOM）以及典型含氮和非含氮消毒副产物（DBPs）的吸附去除效率。三维荧光光谱证实PAC吸附改变了AOM的组成。PAC吸附对AOM中类腐殖质物质具有较高的去除效率，但对类芳香族蛋白质物质的去除效率有限。当PAC投加量为20 mg·L且吸附时间为10～30 min时，3.30 mg·L溶解有机碳的去除率对于胞内有机物（IOM）为20.7%～31.9%，对于胞外有机物（EOM）为12.6%～19.0%。在IOM和EOM氯化过程中，PAC对三卤甲烷的最高去除率分别为26.6%和35.8%。在IOM和EOM氯化过程中，PAC对卤乙腈的最高去除率分别为49.6%和53.6%。PAC对二溴乙腈前体物的去除效果显著。总之，PAC在降低EOM氯化过程中DBPs生成方面比在IOM氯化过程中具有更高的效率。
