| 活性炭吸附对藻类有机物的去除及其消毒副产物的控制 |
| 摘要点击 2761 全文点击 1436 投稿时间：2016-12-19 修订日期：2017-04-08 |
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| 中文关键词 吸附 藻类有机质 铜绿微囊藻 粉末活性炭 消毒副产物 |
| 英文关键词 adsorption algal organic matter Microcystis aeruginosa powder activated carbon disinfection by-products |
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| 中文摘要 |
| 本文研究了粉末活性炭（powder activated carbon，PAC）吸附对藻类有机质（algal organic matter，AOM）及其典型含氮和非含氮消毒副产物（disinfection by-products，DBPs）的去除效能.结果表明，AOM主要含有一些小分子量、亲水性、低芳香度的有机质，三维荧光光谱证实，PAC吸附改变了AOM的组成，明显降低了类腐殖质物质含量，但对芳香蛋白类物质去除能力有限.PAC投加量为20 mg·L-1，吸附时间10~30 min时，对于3.30 mg·L-1的胞内有机质（intracellular organic matter，IOM）和胞外有机质（extracellular organic matter，EOM）溶液，溶解性有机碳去除率分别为20.7%~31.9%和12.6%~19.0%.PAC对IOM和EOM中卤代甲烷总生成量的最高去除率分别为26.6%和35.8%；卤代乙腈总生成量的最高去除率分别为49.6%和53.6%，其中二溴乙腈前体物的去除效果显著.PAC对EOM氯化生成的DBPs的控制作用较好. |
| 英文摘要 |
| 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-1 and the adsorption time ranged from 10 to 30 min, the removal rates of 3.30 mg·L-1 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. |
