Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; College of Environment and Ecology, Chongqing University, Chongqing 400045, China.
Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; College of Environment and Ecology, Chongqing University, Chongqing 400045, China.
Ultrason Sonochem. 2020 Jul;65:105058. doi: 10.1016/j.ultsonch.2020.105058. Epub 2020 Mar 7.
With the rapid development of industry, especially the rapid rise of the chemical industry, the problem of water pollution is becoming more and more serious. Among them, the discharge of organic pollutants represented by phenolic substances has always been at the forefront. In this paper, ultrasound-assisted electrochemical treatment for phenolic wastewater is investigated. The effects of ultrasonic frequency, current, pH value and the amount of fly ash-loaded titanium TiO-Fe particles on phenol removal from phenol-containing wastewater are investigated. The experimental results demonstrate that the removal rate of phenol in phenol-containing wastewater is the best when ultrasonic frequency is 45 kHz, power is 200 W, the current is 1.2 A, pH is 5 and the dosage of fly ash-loaded titanium TiO-Fe particles is 3 g. In addition, microwave-assisted-Fenton reagent treatment for phenol wastewater is investigated. The effects of Fenton reagent dosage, initial pH value, microwave power density and radiation time on phenol degradation rate are investigated. The results show that microwave can accelerate the reaction rate, reduce the number of metal ions, save the process cost and reduce the difficulty of post-treatment. Finally, the research status of phenol wastewater treatment technology at the present stage is reviewed, and the future development direction is discussed.
随着工业的快速发展，特别是化学工业的迅速崛起，水污染问题越来越严重。其中，以酚类物质为代表的有机污染物的排放一直处于前列。本文研究了超声辅助电化学处理含酚废水。考察了超声频率、电流、pH 值和载灰钛 TiO-Fe 颗粒的用量对含酚废水中苯酚去除率的影响。实验结果表明，当超声频率为 45 kHz、功率为 200 W、电流为 1.2 A、pH 值为 5 且载灰钛 TiO-Fe 颗粒用量为 3 g 时，含酚废水中苯酚的去除率最佳。此外，还研究了微波辅助 Fenton 试剂处理含酚废水。考察了 Fenton 试剂用量、初始 pH 值、微波功率密度和辐射时间对苯酚降解率的影响。结果表明，微波可以加速反应速率，减少金属离子的数量，节省工艺成本，降低后处理难度。最后，对现阶段含酚废水处理技术的研究现状进行了综述，并探讨了未来的发展方向。
