%0 Journal Article
%T 焦化废水中挥发酚光催化降解去除影响因素的研究
%A 成泽伟
%A 苍大强
%J 洁净煤技术
%D 2008
%X 笔者以紫外光为光源,对焦化废水中挥发酚进行了光催化降解去除的实验研究,系统研究了催化剂用量、焦化废水pH值、温度、搅拌强度等因素对去除焦化废水中挥发酚的影响。结果表明,随着催化剂用量和pH值的增加,挥发酚的去除率先提高后降低;挥发酚的去除率首先随着温度和搅拌强度的增加而提高,当达到一定值后基本不再变化。光催化去除挥发酚过程符合一级动力学反应规律。并且随着挥发酚初始浓度的增加,表观速率常数降低。向废水中曝气可提高挥发酚去除率,但曝气量存在最佳范围。 Photocatalytic degradation and removal of volatile phenol in coking wastewater was examined under Ultraviolet.Effect of amount of catalyst、pH of coking wastewater、temperature and stirring strength on removal of volatile phenol in coking wastewater was investigated systematically.Experimental results show that removal rate of volatile phenol would at first improve and then decrease with an increase of the amount of catalyst and pH value.And it would improve with temperature and stir strength increasing,then almost change no more.Photocatalytic removal of volatile phenol accords with the first grade dynamic equation.And the apparent rate constant would go down with initial concentration of volatile phenol increasing.Aeration can promote removal rate of volatile phenol,but aeration rate has the optimal value range
%K 焦化废水
%K TiO2
%K 光催化
%K 挥发酚 coking wastewater
%K TiO2
%K photo-catalysis
%K volatile phenol
%U http://www.jjmjs.com.cn/WKD/WebPublication/paperDigest.aspx?paperID=c84f09c3-7cb2-4d3b-b3e1-2af70982cf13