铜绿微囊藻对摇蚊幼虫代谢产物的影响

摘要

研究了摇蚊幼虫代谢物溶液氯胺化过程中铜绿微囊藻、氯胺质量浓度、反应时间、p H值和温度等条件对形成消毒副产物 (DBPs) 的影响.包括三卤甲烷 (THMs) 、卤乙酸 (HAAs) 、卤代乙腈 (HANs) 、水合氯醛 (CH) 、三氯硝基甲烷 (TCNM) 和卤代酮 (HK).实验中未检测到三氯乙腈 (TCAN) 、三氯丙酮 (TCP) 和三氯硝基甲烷 (TCNM).在摇蚊幼虫代谢产物的氯胺消毒过程中, THMs的产生量增加, 但在铜绿微囊藻存在下HAAs含量减少.二氯丙酮 (DCP) 在开始增加, 随着氯胺质量浓度、反应时间、p H值和温度的逐渐升高而减少.二氯乙腈 (DCAN) 和水合氯醛 (CH) 随着氯胺质量浓度和反应时间的增加而逐渐增加, 随着p H值和温度的升高而降低.二氯乙酸 (DCAA) 随氯胺质量浓度和温度的升高而增加, 随反应时间和p H值的增加而降低, 三氯乙酸 (TCAA) 随氯胺质量浓度的增加而增加, 随温度的升高而降低.随着总有机碳 (TOC) 质量浓度的增加, TCM、DCP、DCAA、TCAA呈稳定上升趋势, DCAN、CH呈先上升后下降趋势.%Investigation of the impacts of monochloramine concentration, reaction time, p H as well as temperature, in addition to microcystis aeruginosa on the development of the disinfection by-products (DBPs) was carried out all through the chloramination process of the chironomid larvae metabolite solutions. The trihalomethanes (THMs), together with haloacetic acids (HAAs), haloacetonitriles (HANs), chloral hydrate (CH), nitrotrichloromethane (TCNM) as well as haloketones (HKs) made part of these DBPs. Detection of the trichloroacetonitrile (TCAN), together with trichloropropanone (TCP) as well as nitrotrichloromethane (TCNM) was not performed as well. All through the chloramination of chironomid larvae metabolites, THMs generation exhibited an increase, whereas, the HAAs showed a decline while the microcystis aeruginosa were existent. In addition the quantity of trichloromethane (TCM) manifested increase and that of dichloropropanone (DCP) manifested an increase preliminarily, followed by declining with a progressive augmentation in the monochloramine concentration, in addition to the reaction time, pH as well as temperature. Dichloroacetonitrile (DCAN) and chloral hydrate (CH) manifested a gradual increase with the increase in the monochloramine concentration as well as reaction time, meanwhile decreasing with the increase in both the p H and temperature. The concentration of dichloroacetic acid (DCAA) manifested an increase with the increase in the monochloramine concentration and temperature both, together with decreasing with the increase in both the reaction time and pH. The content of trichloroacetic acid (TCAA) showed an increase with the increase in the monochloramine concentration, together with decreasing with the increase in reaction time, p H and temperature. TCM, DCP, DCAA and TCAA manifested a steady increase; on the other hand, DCAN and CH manifested an increase preliminarily, followed by decreasing with the increase in the total organic carbon (TOC).