摘要
采用O3/H2O2体系降解内分泌干扰物类除草剂扑草净,并对氧化产物进行色谱分析,考察了该体系去除扑草净的效果。结果表明,当扑草净初始浓度为2 mg/L时,在H2O2/O3(物质的量之比)为0.7、O3投量为16.8 mg/L、温度为25℃、pH值为6.2的最佳条件下,O3/H2O2体系对扑草净的去除率接近93%;在自来水本底条件下,对扑草净的去除率较纯水中的高约9%;腐殖酸对扑草净降解的影响表现为低浓度促进、高浓度抑制,碳酸氢根对扑草净降解的抑制作用较小;伴随扑草净的降解,有硝酸根和硫酸根离子产生,这表明O3/H2O2体系能够有效降解扑草净。
The prometryne, an endocrine disrupter was degraded by O3/H2O2 system, and the oxidative products were analyzed by chromatography to assess the removal eiticiency of prometryne. The removal rate of prometryne by O3/H2O2 system is about 93% when the initial concentration of prometryne is 2 mg/L, the H2O2/O3 molar ratio is 0.7, the 03 dosage is 16.8 mg/L, the temperature is 25 ℃ and pH is 6.2. The removal rate of prometryne in tap water is 9% more than that in purified water. The degradation of prometryne is decreased when the content of humic acid （HA） is high, whereas it is increased when the content HA is low. Hydrogen carbonate has less inhibition on degradation of prometryne. The sulfate and nitrate ions generate along with the degradation of prometryne, which indicates that O3/H2O2 system can effectively degrade prometryne.
出处
《中国给水排水》
CAS
CSCD
北大核心
2010年第23期79-82,共4页
China Water & Wastewater
基金
深圳市科技局资助项目(06KJD036)
