低温等离子体高效净化含PAM废水工艺研究

采用低温等离子体技术处理含聚丙烯酰胺(PAM)废水,研究了放电电压、放电时间、溶液pH对不同浓度PAM溶液化学需氧量(COD)降解率的影响规律,同时还研究了不放电条件下PAM溶液pH以及放电条件下放电时间对不同浓度PAM溶液黏度去除率的影响,考察了放电条件下pH对质量浓度1.0g/L PAM溶液黏度去除率的影响规律。通过正交试验确定影响PAM溶液COD降解率的主次顺序为:放电时间>放电电压>溶液浓度>溶液pH。在放电时间5h、放电电压40kV、PAM溶液质量浓度1.0g/L、pH=1.5时,COD降解率最佳,可达85.74%。

Study on efficient purification of PAM wastewater by non-thermal plasma

Non-thermal plasma was applied to treat polyacrylamide(PAM)wastewater.The influence rule of PAM wastewater initial pH value,solution concentration and discharge time,discharge voltage on COD degradation rate was investigated.At the same time,the effect of pH value and discharge time of PAM solution on the viscosity removal rate of PAM solution was also studied.Then,the effect of pH value on the viscosity removal rate of 1.0 g/L PAM solution was studied separately.Through orthogonal test,the factors affecting the COD degradation rate of PAM wastewater were determined as follows:discharge time>discharge voltage>solution concentration>wastewater initial pH value.The COD highest removal rate of PAM wastewater reached 85.74%,when the optimal conditions were as follows:discharge voltage 40 kV,discharge time 5 h,solution concentration 1.0 g/L,pH 1.5.