采用三电极体系探究了Ti/RuO₂-IrO₂、Ti/SnO₂-Sb₂O₃、Ti/Pt、石墨4类电极的电化学性能,考察了不同电极材料、初始pH、初始Cl^-质量浓度、电流密度对生成活性氯浓度的影响。在选取较优的操作条件下电解模拟氨氮废水,结果表明,以Ti/RuO₂-IrO₂电极为阳极,在初始pH为7、初始Cl^-质量浓度为12 500 mg/L、电流密度为100 A/m²的条件下电解120 min氨氮,总氮去除率分别达96.71%、90.44%;活性炭吸附150 min,总氯、余氯去除率分别达到98.43%、98.81%,减小了废水对后续生物处理系统的影响。

Electrochemical properties of Ti/RuO₂-IrO₂,Ti/SnO₂-Sb₂O₃,Ti/Pt and graphite electrodes are investigated by means of three-electrode system.The influences of electrode materials,initial pH,initial concentration of Cl^- and current density on the concentration of active chlorine are investigated,and the current efficiency is calculated.The simulated ammoniacal nitrogen-containing water is electrolytically degraded under the optimal operating conditions.It is found that the removal rates of ammoniacal nitrogen and total nitrogen reach 96.71% and 90.44%,respectively when Ti/RuO₂-IrO₂ electrode is used as the anode,the initial pH is 7,the initial concentration of Cl^- is 12 500 mg·L^-1,the current density is 200 A·m^2- and the electrolysis spends 120 min.After 150 minutes of adsorption by activated carbon,the removal rates of total chlorine and residual chlorine reach 98.43% and 98.81%,respectively,eliminating the impact of wastewater on the subsequent biological treatment system.

王文虎(1996-),男,硕士研究生,研究方向为电化学阳极材料研究及污水处理,15011253356@163.com