摘要
采用超临界水氧化技术处理高浓度吡虫啉农药废水,通过单因素实验,较全面地研究温度、压力、停留时间、氧化剂用量等影响因素对吡虫啉农药实际废水在超临界水中氧化降解的规律;通过正交实验对反应条件进行优化,确定最佳反应条件为:过氧量充足、反应温度为450℃、反应压力为24 MPa、反应停留时间为140 s;采用GC-MS对吡虫啉的SCWO中间产物进行定性分析,得到中间产物的总离子谱图,结果表明经过SCWO处理后的吡虫啉生产废水主要中间产物为吡啶环等,进一步分解为直链烷烃,最终氧化为二氧化碳和水。
Supercritical water oxidation was used for treatment of high concentration imidacloprid pesticide wastewater,a more comprehensive study on the law of temperature,pressure,residence time,the amount of oxidant and other factors on actual imidacloprid pesticide wastewater in supercritical water oxidation degradation through the single factor experiment; and also orthogonal test reaction conditions were optimized to determine the optimum reaction conditions: peroxide was adequate,the reaction temperature was 450 ℃,reaction pressure was 24 MPa,reaction residence time was 140 s.A qualitative analysis of imidacloprid SCWO intermediates by GC-MS was done,the total ion spectrum of the intermediate product was got,the result shows that imidacloprid wastewater after SCWO treatment whose main intermediates were the pyridine ring etc,which was then further decomposed into linear alkanes,ultimately oxidized to carbon dioxide and water.
出处
《环境工程》
CAS
CSCD
北大核心
2014年第8期18-21,37,共5页
Environmental Engineering
基金
连续式协同脱氮近临界水氧化技术处理高毒、高盐、高氮农药废水装备研发与示范(201125)
关键词
超临界水氧化
吡虫啉废水
影响因素
GC-MS
supercritical water oxidation
imidacloprid wastewater
influencing factors
GC-MS
