臭氧技术处理化学镀镍废水的研究

Study on Treatment of Electroless Nickel Plating Wastewater by Ozonation Technology

采用臭氧技术处理化学镀镍废水。研究了废水初始pH值、通气流量、臭氧发生器电流、反应时间、废水中初始镍的质量浓度等因素对臭氧化处理效果的影响,并探索了臭氧-离子交换树脂组合工艺的处理效果。结果表明:臭氧处理可有效地降低化学镀镍废水中镍的质量浓度;在臭氧投加量为2.17 g/L的条件下,镍的去除率可达99.5%;采用臭氧-离子交换树脂组合工艺处理化学镀镍废水,出水中残余镍的质量浓度低于0.1 mg/L,满足排放标准的要求。

Electroless nickel plating wastewater was treated by ozonation technology.The effects of the initial pH value of wastewater,the rate of air flow,current of ozone generator,reaction time and initial mass concentration of nickel in wastewater on the ozonation treatment effect were studied,and the effect of ozone-ion exchange resin combination process was investigated.The results showed that ozonation treatment can effectively reduce the mass concentration of nickel in electroless nickel plating wastewater.The removal rate of nickel could reach 99.5% when the dosage of ozone was 2.17 g/L.The mass concentration of residual nickel in the effluent was less than 0.1 mg/L,meeting the requirements of the discharge standard when electroless nickel plating wastewater was treated by ozone-ion exchange resin combination process.