摘要
研究了UV Fenton体系降解对氯苯酚废水的过程及动力学 .研究表明 ,反应降解速率主要与双氧水加入量、污染物初始浓度、亚铁离子浓度、pH值及载气种类有关 .在四分之一双氧水理论投加量的情况下 ,通入氧气 ,总酚的降解率可达到 98% ,CODcr去除率 80 %以上 .反应体系通入氧气 ,可显著提高污染物的去除率 .建立了CODcrUV Fenton降解的动力学模型 ,结果表明 ,该速率方程和实验数据拟合较好 .
The photodegradation of p-chlorphenol in a photo-Fenton process was investigated. The reaction was affected by initial concentration of p-chlorphenol, ferrous ion and H_2O_2 added, initial pH, as well as carrier gas. With the aid of oxygen aeration, the removal of phenol and COD_(cr) were reached about 98% and 80% respectively when initial concentration of H_2O_2 added was a quarter of stoichiometric calculated quantities. A kinetic model was adopted to describe the reaction and the rate equation could provide the evidence for the main reaction pathway, which was fitted very well with the experiment data.
出处
《环境科学学报》
CAS
CSCD
北大核心
2004年第2期225-230,共6页
Acta Scientiae Circumstantiae
基金
国家自然科学基金
中节能公司联合资助课题 (2 0 176 0 5 3)