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NH_4^+-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NH_4^+-N、TP、高锰酸盐指数有较好的吸附性能.盘片转速为3 r·min-1时,NH_4^+-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NH_4^+-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.
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 NH_4~＋-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 NH_4~＋-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 NH_4~＋-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 NH_4~＋-N and TP（R2〉0.9）,respectively.The removal rates of NH_4~＋-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.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2018年第1期202-211,共10页
Environmental Science
基金
国家水体污染控制与治理科技重大专项(2014ZX07305003)
