亲水性染料日光催化脱色的初步研究  

PHOTOCATLYTIC DECOLORIZATION OF HYDROPHILIC DYE-CONTAINING WASTEWATER BY SUNLIGHT

作　　者：游道新[1] 鲍明亮[1] 李晓昕[1] 戴树桂[1] 李献功 

机构地区：[1]南开大学环境科学系,300071 [2]天津市职业大学环境工程系

出　　处：《水处理技术》1992年第2期90-95,共6页Technology of Water Treatment

摘　　要：以阳光为光源的半导体粉末光催化法用于亲水性染料溶液的脱色试验结果表明:脱色效果与催化剂用量、染料溶液的pH 值有关,通氧和加少量H_2O_2有利于脱色;混合染料溶液和实际染化废水用该方法脱色,经光照一定时间后(12—20h),脱色率均可达95%以上;催化剂使用寿命长,连续使用100h,催化活性未见明显变化。由于该方法直接用阳光作光源,工艺简单,费用较低,因而可望成为一种简便易行,经济有效的染化废水脱色新方法。The decolorization of hydrophilic dye-containing wastewater by sunlightwas studied in the presence of the catalyst semi-conductor powder.Theefficiency of decolorization Was found to be related to pH value of wastewaterand amount of photocatalyst used.Bubbling with O_2 and addition of H_2O_2accelerated the photodecolorization process.After certain period of irridation(12—20),the color removal rates of multi-dye solutions and sewage wereup to 95%.As compared with sole sunlight irridation,this method had theadvantages of easier operation and lesser invest and higher decolorizationefficiency.

关 键 词：染料 脱色 废水处理 日光催化 

分 类 号：X791.03[环境科学与工程—环境工程]