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水力停留时间对活性炭生物转盘处理污染河水的影响
摘要点击 418  全文点击 113  投稿时间:2017-05-24  修订日期:2017-07-10
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中文关键词  活性炭生物转盘  水力停留时间  去除率  生物膜  胞外多聚物
英文关键词  activated carbon biological disk  hydraulic retention time  removal rate  biofilm  EPS
作者单位E-mail
许雯佳 江南大学环境与土木工程学院,无锡 214122
江苏省厌氧生物技术重点实验室,无锡 214122 
771565964@qq.com 
成小英 江南大学环境与土木工程学院,无锡 214122
江苏省厌氧生物技术重点实验室,无锡 214122
江苏省水处理技术与材料协同创新中心,苏州 215000 
439174716@qq.com 
中文摘要
      将生物转盘与活性炭网状填料相结合,进行活性炭吸附实验并采用河水直接挂膜,探究在盘片最佳转速下,不同水力停留时间对活性炭生物转盘去除NH4+-N、TP、高锰酸盐指数以及生物膜特性的影响.结果表明,Freundlich等温线显示活性炭对水中NH4+-N、TP、高锰酸盐指数有较好的吸附性能.盘片转速为3r·min-1时,NH4+-N、TP、高锰酸盐指数去除率分别为86.05%、81.28%、77.09%,去除性能最佳.水力停留时间对去除NH4+-N、TP存在显著线性相关(R2 > 0.9)且去除率存在显著差异(P<0.05),而对高锰酸盐指数不存在显著线性相关且去除率差异不显著(P > 0.05).HRT对生物膜活性、蛋白多糖以及S-EPS、LB-EPS、TB-EPS三维荧光峰均有影响.
英文摘要
      The study combined activated carbon with a rotating biological contactor. The activated carbon adsorption experiments were conducted and the biofilm was formed by using the river water directly. The effects of different hydraulic retention times on the removal of NH4+-N, TP, and permanganate index and on the biofilm properties were investigated at the optimum rotational speed of the disc. Experimental results are as follows. The Freundlich isotherm showed that activated carbon had better adsorption properties for NH4+-N, TP, and permanganate index in water.When the disk speed was 3 r·min-1, the removal efficiency was the best, and the removal rates of NH4+-N, TP and permanganate index were the best at 86.05%, 81.28%, and 77.09%, respectively. In addition, there was a significant linear correlation between the hydraulic retention time and the removal of NH4+-N and TP (R2>0.9), respectively. The removal rates of NH4+-N and TP at different hydraulic retention times were significantly different (P<0.05), but the permanganate index was not (P>0.05).Hydraulic retention time had effects on the biofilm activity, protein and polysaccharide contents,and the three-dimensional fluorescence peaks of S-EPS, LB-EPS, and TB-EPS of the biofilm.

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