摘要
以悬浮态TiO2为催化剂,在紫外光下对炼化污水回用装置反渗透浓水进行光催化处理,采用单因素实验,考察了反应时间、pH值、光照强度、TiO2投加量、H2O2投加量、曝气量对处理效果的影响。结果表明:在反应时间为2 h,pH为4,500 W高压汞灯,TiO2投加量为0.6 g/L,H2O2投加量为0.8 ml/L,曝气量为0.75 L/min的条件下,反渗透浓水COD的去除率可达93.63%,脱色率可达98.15%。
Using suspended TiO2, photo - catalysis of concentrated water from wastewater recycling reverse osmosis units was studied under ultraviolet. The different variables affecting the removal efficiency such as reaction time, Ti02 quantity, pH value, UV irradiation intensity, H202 quantity and aeration quantity were investigated. The result showed that the removal rates of COD and chromaticity were 93.63% and 98.15% , respectively, under the following optimum conditions of reaction time of 2 h, TiO2 quantity of 0. 6 g/L, pH value of 4, irradiation of high - pressure mercury - lamp of 500 W, H2O2 quantity of 0. 8 ml/L and aeration quantity of 0.75 L/min.
出处
《广州化工》
CAS
2014年第11期6-8,34,共4页
GuangZhou Chemical Industry
基金
国家自然科学基金(NO.21307160)
中央高校基本科研业务费专项(NO.R1404005A)
山东省自然基金(ZR2013EEQ030)
关键词
光催化氧化
二氧化钛
反渗透浓水
photo -catalytic degradation
TiO2
RO concentrated water
