低温等离子体降解酸性橙7染料废水研究

Degradation of Acid Orange 7 Dye Wastewater by Low Temperature Plasma

采用低温等离子体技术降解酸性橙7染料废水,探讨了酸性橙7初始浓度、输入功率、初始pH值以及空气流量对酸性橙7降解的影响。结果表明:输入功率为18W,初始酸性橙7浓度为5mg/L,初始pH值为7.0,空气流量为56L/h时,酸性橙7的降解率可达100%;降低酸性橙7初始浓度,降低输入功率,碱性pH值和较高的空气流量均有利于提高酸性橙7的降解率;酸性橙7降解过程中溶液的电导率不断增大,但pH值逐渐降低。

The acid orange 7 dye wastewater was degraded by low temperature plasma.The effects of initial concentration of acid orange 7,input power,initial pH and air flow rate on the degradation of acid orange 7 were discussed.The results showed that when the input power was 18 W,the initial concentration of acid orange 7 was 5 mg/L,the initial pH was 7.0,and the air flow rate was 56 L/h,the degradation rate of acid orange 7 reached 100%.Decreasing initial concentration of acid orange 7,decreasing input power,alkaline pH and high air flow rate were all beneficial to improve the degradation rate of acid orange 7.During the degradation of acid orange 7,the conductivity of the solution increased,but the pH value decreased gradually.