铁碳微电解-Fenton联合光催化处理金属加工清洗废水  

Iron-Carbon Microelectrolysis-Fenton Combined Photocatalysis Treatment of Metal Processing Cleaning Wastewater

作　　者：李春虎[1] 黄克磊 付莹莹 王文泰[1] 王亮[1] 冯丽娟[1] LI Chunhu;HUANG Kelei;FU Yingying;WANG Wentai;WANG Liang;FENG Lijuan(Ministry of Education,College of Chemistry and Chemical Engineering,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中国海洋大学化学化工学院,山东青岛266100

出　　处：《水处理技术》2021年第10期66-70,74,共6页Technology of Water Treatment

基　　金：青岛市民生科技计划项目(17-3-3-71-nsh)。

摘　　要：采用一步水热法制备了氟改性TiO2,对其进行了表征。根据金属零部件加工清洗废水的水质特点,提出Fe/C微电解-Fenton氧化联合光催化处理废水。结果表明,清洗废水体积为80 mL,活性半焦用量0.75 g,初始pH为3,Fe、C质量比2:1,双氧水(H_(2)O_(2)的质量分数30%)添加量为1.8 mL,废水COD由6 248 mg/L降低至218 mg/L;光催化氧化深度处理时,100 mL预处理后废水,在紫外灯照射下,双氧水添加量为4 mL,氟改性TiO2光催化剂用量为0.8 g/L,F_(1.5)-TiO_(2)样品(F与Ti的摩尔比为1.5)光催化氧化降解废水效果最佳,反应3 h后COD降低至122 mg/L。Fluorine-modified titanium dioxide was prepared by one-step hydrothermal method, and it was characterized. According to the quality characteristics of metal processing washing wastewater, Fe/C microelectrolysis-Fenton oxidation technology combined with photocatalysis was proposed for wastewater treatment. The results showed that, the volume of cleaning wastewater was 80 mL, the amount of active semi-coke was 0.75 g, the initial pH was 3, the mass ratio of Fe and C was 2:1, and the addition amount of hydrogen peroxide(H_(2)O_(2) mass fraction of 30%) was 1.8 mL, the wastewater COD reduced from 6 248 mg/L to 218 mg/L. During the advanced treatment of photocatalytic oxidation, 100 mL of pretreated wastewater, under UV light irradiation, the dosage of hydrogen peroxide was 4 mL, and the dosage of fluorine-modified TiO2 photocatalyst was 0.8 g/L, the F_(1.5)-TiO_(2) sample(the molar ratio of F to Ti was 1.5) had the best photocatalytic oxidation degradation of wastewater, the COD was reduced to 122 mg/L after 3 h reaction.

关 键 词：二氧化钛 氟改性 铁碳微电解 Fenton 光催化 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学]