Study on Electrochemical Treatment of Chloramphenicol Waster Water
|School||Huazhong University of Science and Technology|
|Keywords||Chloramphenicol Electrochemistry Wastewater treatment Pharmaceuticals and personal care products|
Pollution of water bodies by pharmaceuticals and personal care products (PPCPs) have attracted more attention. In which antibiotics are the most typical and most prominent pollutants. Because of the biological and chemical toxity of antibiotics, it’s necessary to develop practical processes of the pollution control of antibiotics in waster water.Electrochemical water treatment technology has many advantages such as mild reaction condition、no secondary pollution、high efficiency of degradation of pollutants、simplicity of equipment etc, so that it has potential application in the PPCPs treatment.Selected as the study target, we studied the degration of CAP by Electrochemical Oxidation-Reduction technology and Electricity-Fenton technology, using CAP and CODCr concentrations as monitoring targets. For the Electrochemical Oxidation-Reduction technology, the optimal process conditions are pH=3、sodium sulfate as the conductive electrolyte with the concentration of 1.0g/L、current density: 2.0 mA/cm2 . The results show that the electrochemical oxidation-reduction technologies can effectively remove the CAP, but can not effectively reduce the CODCr of the waste water.Compared with Electrochemical Oxidation-Reduction technology, Electro-Fenton process can efficiently reduce CODCr of the waster water, realizing the mineralization of organic pollutants. The results show that within the scope of the study two main factors that impact the removal rate of CODCr are acidity and the proportion of Fe2+ and H2O2. In fact pH=3 is the Appropriate acidity to achieve the best effect of Fenton; with the other conditions fixed, the removal rate of CODCr increases with the increase of the proportion of Fe2+ and H2O2. Compared with traditional Fenton method, Electro-Fenton process can achieve better result because of the continuous regeneration of Fe2+.