活性炭吸附对藻类有机物的去除及其消毒副产物的控制

发布时间：2018-03-28 05:03

本文选题：吸附　切入点：藻类有机质　出处：《环境科学》2017年09期

【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.
[Abstract]:The removal efficiency of powder activated carbon (PAC) on algal organic matterfly (AOM) and its typical disinfection by-products containing nitrogen and non-nitrogen were studied. The results showed that AOM mainly contained some organic matter with low molecular weight, hydrophilicity and low aromaticity. Three-dimensional fluorescence spectra showed that the adsorption of AOM changed the composition of AOM and significantly reduced the content of humus-like substances, but the removal capacity of aromatic protein was limited. The dosage of PAC was 20 mg / L ~ (-1), and the adsorption time was 10 ~ 30 min. For intracellular organic matterIOM (3.30mg / L) and extracellular organic mater EOM (extracellular organic matter) solutions, The highest removal rates of dissolved organic carbon were 20.7g% and 31.9%, respectively, and the highest removal rates of total halogenated methane production in IOM and EOM were 26.6% and 35.8.The highest removal rates of total halogenated acetonitrile were 49.6% and 53.6%, respectively, and the highest removal rates of dibromoacetonitrile precursors were 49.6% and 53.6%, respectively. The control effect of PAC on DBPs produced by chlorination of EOM is better.
【作者单位】：天津大学环境科学与工程学院天津市城市河道水质生态净化技术工程中心;酒泉卫星发射中心;
【基金】：国家自然科学基金项目(21207096) 国家重点研发计划项目(2016YFC0401107) 天津大学自主创新基金项目(2013XQ-0048)
【分类号】：TU991.2

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