高压脉冲放电处理含氰废水的影响因素探讨  

Study on influencing factors of cyanic wastewater treatment by high voltage pulse discharge method

作　　者：李胜利[1] 章英慧[1] 龙淼[1] 杨怀远[2] 

机构地区：[1]华中科技大学环境学院,湖北武汉430074 [2]武汉钢铁总公司安全环境保护部,湖北武汉430083

出　　处：《水资源保护》2006年第1期87-91,共5页Water Resources Protection

摘　　要：焦化废水中含有大量的氰化物,必须采取有效措施进行去除,传统去除方法运行成本高、操作复杂。提出了用高压毫微秒脉冲产生的非平衡等离子体处理含氰废水的方法,对其影响因素pH值、放电时间、气流量、放电条件等进行了大量的实验研究,结果表明:溶液初始pH值为9.09,放电2 h,放电电压46 kV时氰化物的去除率最高可达93.2%,氰化物质量浓度可降至0.26 mg/L。实验对比了放电与不放电氰化物的去除效果:相同条件下放电后氰化物的去除率大大提高,为焦化废水中氰化物的去除提出了一种新的方法。There is large amount of cyanide in coking wastewater, which should be removed by some effective methods. For conventional methods, the running cost is high, and operation is complicated. A new method was proposed to treat cyanic wastewater, i.e. using non-equilibrium plasma generated by high voltage were discussed, including pH value, reaction time, air flux, and discharging indicate that while the initial pH value of solution is 9.09 and the millimicrosecond pulse. Many factors condition. The results of experiment discharge voltage is 46 kV, the removal efficiency of CN can reach 93.2%, and the concentration of CN can decrease below to 0.26 mg/L after two-hour discharge. The comparison of experiments with or without discharge demonstrates that the removal efficiency is higher with discharge than that without discharge. A new method is proposed for CN removal from coking wastewater.

关 键 词：焦化废水 非平衡等离子体 含氰废水 

分 类 号：X703.1[环境科学与工程—环境工程]