羊毛纤维填料对炔雌醇的吸附及在污水深度处理中的作用.docVIP

  羊毛纤维填料对炔雌醇的吸附及在污水深 度处理中的作用# 胡碧波1，阳春1，Andrew Wheatley2* 5 10 15 20 25 30 35 40 （1. 重庆大学三峡库区生态环境教育部重点实验室，重庆，400045； 2. 拉夫堡大学土木系，莱斯特郡，英国，LE11 3TU） 摘要：雌情活力最强的炔雌醇（EE2）难于生物降解，且具有较强的憎水性，可通过吸附将 其从水中去除。为研究羊毛纤维这一新型填料对 EE2 的吸附特性，比较了活性炭、二氧化 锰和羊毛纤维三种吸附剂对 EE2 的吸附去除作用。含有 5.0μgEE2/L 的溶液经分别填充有活 性炭、二氧化锰和羊毛纤维的上向流反应器，活性炭反应器的去除率为 99.8%，而且实验期 间没有穿透饱和；二氧化锰反应器 8 天后开始穿透。虽然羊毛纤维的吸附能力强于二氧化锰， 但因羊毛纤维的容积密度远远小于二氧化锰，所以在实验后 12 小时开始穿透逐渐饱和。由 于实际中 EE2 浓度远远小于实验浓度，所以采用羊毛纤维作为反应器的吸附剂不存在短时 间达到饱和问题，这也在后续的中试实验中得到了验证。 关键词：水污染防治工程；污水分析；吸附；炔雌醇；深度处理 中图分类号：X830.2 Adsorption removal of 17α-ethynylestradiol by wool fiber in the tertiary treatment of wastewater HU Bibo1, YANG Chun1, Andrew WHEATLEY2 (1. Key Laboratory of Three Gorges Reservoir Region’ s Eco-environments, Ministry of Education, Chongqing University, Chongqing 400045 , P.R China; 2. Department of the Civil and Building Engineering, Loughborough University, Leicester, UK, LE11 3TU) Abstract: 17α-ethynylestradiol (EE2) is the strongest estrogenic endocrine disrupting chemical, and it is hardly biodegradable. It can be removed by adsorption due to its hydrophobic property. The absorptive removal of EE2 was comparatively studied by pumping 5.0μgEE2/L solution into upstream reactors, packed with granular activated carbon (GAC), manganese oxide (MnO2) and wool fiber respectively. The GAC reactor removes 99.8% EE2 without breakthrough, and the breakthrough in the MnO2 reactor happens after 8 days. Although the absorbability of wool fiber is higher than MnO2, the breakthrough in the wool fiber reactor happens after 12 hours. This lies in that the bulk density of wool fiber (10-20Kg/m3) is lower than that of MnO2 (1900-2000 Kg/m3). A practically used wool fiber reactor may take more time to breakthrough due to the approximately three orders of magnitude lower EE2 concentration in the secondary effluent than that in these experiments, which was proved by the following pilot-scale experiments. Key words: water pollution control engineering; sewage analysis