辉光放电等离子体处理印染废水的实验研究

摘要

Using glow discharge plasma technology to degrade priming and dyeing wastewater was studied by measuring the CODer, BOD and the changes in pH, and a preliminary understanding of the degradation mechanism was obtained. The results show that the influence of ferrous ion（ Ⅱ ）has been detailed determined from printing and dyeing wastewater degradation measurements. CODer had an increase because hydrogen peroxide was generated in glow discharge process, but BOD did not change significantly. While addition of ferrous ion（Ⅱ ） could make the degradation improve greatly, the removal efficiencies of CODer and BOD were 41.2% and 46. 2% when the mass of ferrous ion（ Ⅱ ）was 50mg. The degradation rate has been greatly improved.%用辉光放电等离子体技术印染废水降解进行了研究，通过测定CODcr、BOD和pH值的变化初步探讨了降解机理。结果表明：在辉光放电降解印染废水的过程中，发现仅是采用辉光放电水处理技术时，因为过氧化氢的生成导致废水CODcr，有一定的升高，而废水的BOD几乎没有变化，说明辉光放电对印染废水几乎没有降解效果；而在亚铁离子的加入后，印染废水出现明显的降解效果，当亚铁离子加入量为50mg时，印染废水的CODcr和BOD的去除率分别为41．2％和46．2％，降解率得到了很大的提高。