凤眼莲和双氧水协同抑藻及改善水质效果研究  

Study on Synergistic Algae Inhibition and Water Purification Effect of Eichhornia crassipes and Hydrogen Peroxide

作　　者：孙维民 张志勇[1,4,5] 秦红杰 张迎颖 高胜寒[1,3] SUN Weimin;ZHANG Zhiyong;QIN Hongjie;ZHANG Yingying;GAO Shenghan(Institute of Agricultural Resources and Environment,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China;Guangdong Provincial Key Lab of Ornamental Plant Germplasm Innovation and Utilization,Environmental Horticulture Research Institute,Guangdong Academy of Agricultural Sciences,Guangzhou 510640,China;School of Environmental and Safety Engineering,Jiangsu University,Zhenjiang 212013,China;Key Laboratory of Agricultural Environment of Lower Yangtze River Plain,Ministry of Agriculture and Rural Areas,Institute of Agricultural Resources and Environment,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China;National Agricultural Environment Liuhe Observation Experimental Station,Nanjing 210014,China;Key Laboratory of Urban Agriculture in South China,Ministry of Agriculture and Rural Affairs,Guangzhou 510640,China)

机构地区：[1]江苏省农业科学院农业资源与环境研究所,江苏南京210014 [2]广东省农业科学院环境园艺研究所,广东省园林花卉种质创新综合利用重点实验室,广东广州510640 [3]江苏大学环境与安全工程学院,江苏镇江212013 [4]江苏省农业科学院农业资源与环境研究所农业农村部长江下游平原农业环境重点实验室,江苏南京210014 [5]国家农业环境六合观测实验站,江苏南京210014 [6]农业农村部华南都市农业重点实验室,广东广州510640

出　　处：《环境科学与技术》2022年第11期98-104,共7页Environmental Science & Technology

基　　金：江苏省治太专项资金课题(TH2018403);国家自然科学基金项目(41877510);广东省农业科学院创新基金产业专项项目(202136);广东省驻镇帮镇扶村农村科技特派员项目(KTP20210029)。

摘　　要：为了探明双氧水(H_(2)O_(2))和凤眼莲协同作用下去除蓝藻水华以及净化水质的效果,该文通过室内模拟实验分别研究了双氧水、凤眼莲及其组合处理对纯培养铜绿微囊藻的抑制作用和去除水体氮、磷的效果与主要机制。结果表明,H_(2)O_(2)处理组、凤眼莲处理组、H_(2)O_(2)+凤眼莲处理组对铜绿微囊藻(FACHB-7806)的抑制及对水质的改善效果存在显著差异,其中H_(2)O_(2)(15 mg/L)处理组短期抑藻效果最佳,48 h后叶绿素a浓度下降了69%,铜绿微囊藻光合系统Ⅱ的最大光量子产量(F_(v)/F_(m))显著降低,4 h后F_(v)/F_(m)值趋于0,且48 h内无明显恢复,此后因H_(2)O_(2)完全分解而不再有抑藻效果,导致7 d后铜绿微囊藻的光合活性缓慢恢复;凤眼莲处理组48 h内对铜绿微囊藻光合活性无显著抑制效果,但7 d后铜绿微囊藻的光合活性逐渐下降,实验结束时(28 d)叶绿素a浓度下降了98%;H_(2)O_(2)(15 mg/L)+凤眼莲处理组4 h后对藻细胞F_(v)/F_(m)的抑制率达到最大为71%,实验结束时叶绿素a浓度下降了98%。H_(2)O_(2)+凤眼莲组对水柱中总氮、总磷的去除率分别达81.97%和73.63%,其中凤眼莲自身吸收的氮、磷量分别占去除总量的77.5%和69.8%,可见,本实验条件下植物吸收作用是系统内氮、磷去除的主要途径。而H_(2)O_(2)处理组的氮磷去除量分别为13.23%、20.29%,与对照相比无显著差异。因此,在铜绿微囊藻水华应急处理时可以适量投加H_(2)O_(2),而后续在此基础上安全控养适量凤眼莲则有助于长效控藻和改善水质。In order to explore the synergistic effect of hydrogen peroxide(H_(2)O_(2)) and Eichhornia crassipes on the cyanobacterial bloom removal and water purification, the inhibition of pure cultured Microcystis aeruginosa and the reduction of nutrients such as nitrogen and phosphorus in water body were studied through laboratory simulation experiments. The results showed that there were significant differences in the inhibition of M. aeruginosa(FACHB-7806) and the improvement of water quality among H_(2)O_(2)treatment group, E. crassipes treatment group and H_(2)O_(2)+ E. crassipes treatment group. The shortterm inhibition effect of H_(2)O_(2)(15 mg/L) treatment group was the best. After 48 hours, the concentration of chlorophyll a decreased by 69%, the maximum photon yield(F_(v)/F_(m)) of M. aeruginosa photosynthetic system Ⅱ decreased significantly, and the F_(v)/F_(m)value tended to 0 after 4 hours, and there was no significant recovery within 48 hours. After that, there was no algae inhibition effect due to the complete decomposition of H_(2)O_(2), resulting in the slow recovery of photosynthetic activity of M. aeruginosa after 7 days. The E. crassipes treatment group had no significant inhibitory effect on the photosynthetic activity of M. aeruginosa within 48 hours, but the photosynthetic activity of M. aeruginosa gradually decreased after 7 days, and the concentration of chlorophyll a decreased by 98% at the end of the experiment(28 days). The inhibition rate of H_(2)O_(2)(15mg/L) + E. crassipes group on algal cell F_(v)/F_(m)reached the maximum of 71% after 4 hours, and the concentration of chlorophyll a decreased by 98% at the end of the experiment. The removal rates of total nitrogen and total phosphorus in the water column in H_(2)O_(2)+ E. crassipes group were 81.97% and 73.63% respectively. The amount of nitrogen and phosphorus absorbed by E. crassipes accounted for 77.5% and 69.8% of the total removal respectively. Results showed that nutrition absorption was the main fate of nitrogen and phosphorus in

关 键 词：铜绿微囊藻水华 H_(2)O_(2) 凤眼莲 抑藻 氮磷去除 

分 类 号：X52[环境科学与工程—环境工程]