有机半导体材料光催化降解含油废水  

Photocatalytic degradation of petroleumhydrocarbon wastewater by organic semiconductors

作　　者：赵天楚 魏延雨[1] 刘经纬 祝旭宏 Zhao Tianchu;Wei Yanyu;Liu Jingwei;Zhu Xuhong(SINOPEC Yangzi Petrochemical Co.,Ltd.,Nanjing,Jiangsu 210048)

机构地区：[1]中国石化扬子石油化工有限公司

出　　处：《炼油技术与工程》2019年第10期61-64,共4页Petroleum Refinery Engineering

摘　　要：以有机半导体材料2,8-二(4′-二苯氨基)苯基-4,6-二苯基-1,9-蒽唑啉为光催化剂,对光催化降解汽油废水、柴油废水、焦化废水、芳烃废水4种不同性质的石油烃类废水进行了研究,发现其对4种不同的石油烃类废水具有很好的光催化降解效果,2 h除油率达到40%~55%,10 h除油率达到95%以上,CODCr(重铬酸盐指数)去除率达到61.35%以上,且汽油废水和柴油废水相对容易降解。不同pH值下的实验结果表明pH值在1.21~3.21光催化降解效果较好。对油质量浓度从10.2 mg/L到1 603.8 mg/L的柴油废水,10 h CODCr去除率均可达到70%~90%,若废水中的油含量过高,则需要稀释方可光催化降解。催化剂可以循环使用4次,除油率仍达到95%以上,CODCr去除率均达到90%以上。The of petroleum hydrocarbon wastewater with different properties, such as gasoline wastewater, diesel wastewater, coking wastewater and aromatics wastewater, was studied using organic semiconductor 2,8-bis(4’-diphenylamino)phenyl-4,6-diphenyl-1,9-anthrazoline(BTZA) as photocatalyst. It was found that the photocatalytic degradation of 4 types of petroleum hydrocarbon wastewater was very good. The results showed that the oil removal rate reached 40%~55% in 2 hours, 95% in 10 hours, 61.35% in CODCr, and the gasoline wastewater and diesel wastewater were relatively easy to degrade. The experimental results under different pH values show that the photocatalytic degradation effect is better when the pH value is between 1.21 and 3.21. For diesel wastewater with the oil concentration ranging from 10.2 mg/L to 1 603.8 mg/L, the removal rate of CODCr in 10 hours can reach 70%~90%. If the oil content in wastewater is too high, the photocatalytic degradation can only be achieved by dilution. After continuous use of the BTZA for 4 times, the oil removal rate is still above 95%, and the CODCr removal rate is above 90%.

关 键 词：光催化降解 含油废水 有机半导体材料 除油率 CODCR去除率 

分 类 号：X70[环境科学与工程—环境工程]