摘要
[Objective] The aim was to treat acidic wastewater containing thallium by enhanced coagulation oxidation process. [Method] Enhanced coagulation oxidation process was made use of to remove thallium in the acidic wastewater in the experiment under the condition of 0.05 kg/L of potassium permanganate, 30% hydrogen peroxide and 0.05 kg/L calcium hypochlorite as oxidant, together with 0.092 kg/L CaO as coagulation. [Result] The results showed that thallium removal efficiencies achieved 99.98%, 99.1% and 99.95% when dosages of KMnO4, H2O2and Ca（ClO）2were added at 20, 2.2 and 37 ml, respectively, under the condition of 30 ml 0.092kg/L CaO being dosed and 99.93%, 99.69% and 99.98% were achieved when different dosages of CaO were added at 25, 35 and 25 ml, under the condition of 20ml KMnO4, 2.2 ml H2O2and 37 ml Ca（ClO）2respectively. [Conclusion] The experiment demonstrates that good removal effects of removal thallium from the acidic wastewater would be achieved by enhanced coagulation oxidation process.
[目的]采用强化氧化混凝法对酸性废水的微量铊进行处理。[方法]本实验采用0.05 kg/L的高锰酸钾,30%过氧化氢和0.05kg/L的次氯酸钙为氧化剂,以0.092 kg/L CaO为絮凝剂对酸性废水中痕量铊进行强化氧化混凝法处理。[结果]在投加30 ml CaO的情况下,当高锰酸钾、过氧化氢和次氯酸钙的投加量分别为20,2.2和37 ml时,铊去除率可达99.98%,99.1%和99.95%;在高锰酸钾定量为20 ml、过氧化氢定量为2.2 ml和次氯酸钙定量为37 ml的情况下,CaO投加量分别为25、35和25 ml时,铊去除率均可达99.93%,99.69%和99.98%。[结论]强化氧化混凝处理含铊酸性废水效果较佳。
基金
National Natural Science Foundation(51208122)
Department of Science and Technology of Guangdong Province(2010B030900008)
New Special Science and Technology Project of Pearl River and College Students’Innovative Entrepreneurial Training Plan Project in Guangdong Province~~
