摘要
通过采用铁碳微电解-Fenton法预处理苯胺基乙腈生产废水的实验研究,分析了处理过程的COD降解动力学;同时研究了单纯活性炭吸附和微电解过程中COD去除率的变化。结果表明,铁碳微电解的初期COD降解过程近似符合一级反应动力学,并且得到微电解与活性炭吸附对铁碳微电解降解COD的关系式;Fenton反应中通过研究有机物浓度和过氧化氢初始浓度与反应进程的关系,建立了反应动力学模型;单纯吸附实验COD去除率在24 h内快速下降,而微电解在相应时间内COD去除率波动较小,为实际应用提供了数据经验和理论依据。
The degradation kinetics of COD was analyzed by studying n-phenylglycinonitrile wastewater pre- treatment using micro-electrolysis and Fenton process. Moreover, changes of COD removal rate were studied in the process of simple AC adsorption and micro-electrolysis respectively. The results showed that,initial COD degrada- tion process by micro-electrolysis obeys approximately the pseudo-first-order reaction kinetics, and relation of COD degradation by micro-electrolysis was obtained,which explained the relationship between micro-electrolysis and activated carbon adsorption. By studying the relationship between organic matter concentration, initial concen- tration of hydrogen peroxide and reaction process in Fenton reaction, a reaction kinetics model was established. COD removal rate of simple AC adsorption rapidly decreased within 24 h,while micro-electrolysis reaction had small fluctuation, which can provide data experience and theoretical basis for practical applications.
出处
《环境工程学报》
CAS
CSCD
北大核心
2014年第4期1397-1404,共8页
Chinese Journal of Environmental Engineering
基金
国家"水体污染控制与治理"科技重大专项(2008ZX-07315-003)
