摘要
探索了用超声波降解水中低浓度多氯联苯的可行性。对各种操作条件如频率、声强、温度、饱和气体等进行了考察 ,得到不同条件下的假一级反应常数。结果表明 ,超声波能较快地降解水中的多氯联苯 ,其反应符合假一级反应 ,35 8kHz是最佳频率 ,Ar与氧的结合。
The sonolysis of aqueous polychlorobiphenyls (PCBs) at trace level was investigated. Operative parameters including the frequency and intensity of ultrasonic, ambient temperature and saturating gases were examined. Pseudo first order rate constants of PCBs degradation under various conditions were obtained. The results showed that sonolysis could degrade aqueous PCBs effectively, and 358 kHz was the best frequency. Application of combined Ar and O 2 as saturating gas, and usage of small size probe could enhance sonification significantly.
出处
《给水排水》
CSCD
北大核心
2003年第3期30-33,共4页
Water & Wastewater Engineering
