摘要
采用纳米TiO2光催化氧化法处理制革废水。用直接冻黄和表面活性剂配制不同初始COD的模拟制革废水,正交实验结果显示:初始pH和光照时间是主要的影响因素;确定的适宜工艺条件为:初始pH6,光照时间6h,催化助剂FeCl3的加入量3.36mg/L,纳米TiO2加入量100mg/L,初始COD144.67mg/L。采用此工艺条件对实际制革废水进行了处理,处理后出水COD和色度去除率分别达到65.0%和91.4%,且可生化性大大提高。
Tannery wastewater was treated by photocatalytic oxidation process using nano-TiO2. The orthonormal tests were done with simulated tannery wastewater samples of different initial COD prepared with chrysophenine and surfactant. The results show that： The major affecting factors are initial pH and radiation time;The optimum process conditions are initial pH 6, radiation time 6 h, catalyst promoter FeCl3 dosage 3.36 mg/L, nano-TiO2 dosage 100 mg/L and initial COD 144.67 mg/L. The actual tannery wastewater was treated under these conditions with 65.0% and 91.4% of COD and chroma removal rates respectively and great improvement of the effluent biodegradability.
出处
《化工环保》
CAS
CSCD
北大核心
2006年第1期13-16,共4页
Environmental Protection of Chemical Industry
关键词
纳米二氧化钛
光催化
直接冻黄
表面活性剂
制革废水
废水处理
nano-titanium dioxide
photocatalysis
chrysophenine
surfactant
tannery wastewater
wastewater treatment
