摘要
研究了外加电压、初始浓度对电化学耦合膜工艺去除饮用水中卡马西平(CBZ)效果的影响.结果表明,CBZ初始浓度为100μg/L的条件下,随着电压的升高,电化学耦合膜工艺对CBZ的去除率逐渐增加,在外加电压为2V,电化学耦合膜工艺对CBZ的去除率达到88.0%;外加电压为2.0V的条件下,CBZ初始浓度为50~500μg/L时,电化学耦合膜对CBZ的去除率均达到85%以上.而与粉末活性炭/微滤膜(PAC/MF)工艺的比较可知,电化学耦合膜工艺的去除效果更为稳定,运行成本也更低.考察了水中的离子强度和腐殖酸对电化学耦合膜工艺去除CBZ效果的影响.结果表明,由于对系统中·OH的竞争作用,离子强度的增大及腐殖酸浓度的提高将抑制CBZ去除.
The removal of carbamazepine （CBZ） in drinking water by electrochemical coupled membrane process was investigated. The effects of voltage, initial CBZ concentration, ionic strength, and humic acid on the removal efficiency of CBZ were systemically investigated. The removal efficiency of CBZ gradually increased with the increase of applied voltage, and the optimal removal efficiency of CBZ was obtained with 2V applied voltage. When the initial CBZ concentration were in the range of 50 ~ 500μg/L, the removal efficiencies of CBZ by electrochemical coupled membrane process were above 85% by applying 2V voltage. However, the removal of CBZ could be inhibited by the increase of ionic strength and humic acid concentration due to the competitive effect of ·OH in the system. Compared with powdered activated carbon / microfiltration （PAC/MF） process, the removal efficiency of electrochemical coupled membrane process was more stable and the cost was lower.
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
2018年第1期193-201,共9页
China Environmental Science
基金
国家水体污染控制与治理科技重大专项(2017ZX07201005)
