多层级生物操纵技术在人工湿地控制蓝藻的应用研究  

Application Research of Multi-layer Biological Control Technology in Controlling Cyanobacteria in Constructed Wetlands

作　　者：李燕萍 夏晴晴 程花[2] 赵珏 LI Yan-ping;XIA Qing-qing;CHENG Hua(Jiangsu Huanke Testing Co.,Ltd.,Wuxi,Jiangsu 214061;Jiangsu Jiangda Ecological Technology Co.,Ltd.,Wuxi,Jiangsu 214061)

机构地区：[1]江苏环科检测有限公司,江苏无锡214061 [2]江苏江达生态科技有限公司,江苏无锡214061

出　　处：《安徽农业科学》2019年第15期81-84,共4页Journal of Anhui Agricultural Sciences

基　　金：江苏省政策引导类计划(国际科技合作)——重点国别及机构产业技术合作项目(BZ2017004)

摘　　要：通过野外围隔试验建立多层级高效生物食物链调控水质和消除蓝藻,寻找出合理的控藻生物比例。再将该技术应用到贡湖湾人工湿地,探索多层级生物操纵技术+人工湿地技术控制蓝藻的效率。结果表明,当控藻生物鲢鱼、铜锈环棱螺、褶纹冠蚌、河蚬的比例为4∶5∶20∶40时,30d后叶绿素a消除率达到97.12%,水体营养盐TN、TP和NH3-N浓度分别下降了73.63%、57.44%和74.44%,说明合理的多层级控藻生物比例对水体中营养盐和藻类均有显著的消除作用。该控藻生物比例应用到贡湖湾人工湿地试验12d后,蓝藻消除效率达到99.8%,试验14d后蓝藻生物量比人工湿地原有蓝藻量降低6.1%,说明利用“多层级生物操纵技术+人工湿地技术”结合的方法能有效控制蓝藻,为解决贡湖湖滨带内蓝藻提供了一种安全有效的手段。Through field enclosure experiments,a multi-level high-efficiency biological food chain was established to regulate water quality and eliminate Cyanobacteria, and a reasonable proportion of algae-controlling organisms was found.Then,this method was applied to the constructed wetland of Gonghu Bay to explore the efficiency of controlling Cyanobacteria by multi-level biological manipulation technology and constructed wetland technology.The results showed that when the proportion of Hypophthalmichthys molitrix,Bellamya aeruginosa,Cristaria plicata and Corbicula fluminea was 4 ∶5 ∶20 ∶40,the chlorophyll a elimination rate reached 97.12% after 30 days,and the water nutrient salt TN,TP The concentration of NH 3-N decreased by 73.63%,57.44% and 74.44%,respectively,indicating that the proportion of rational multi-level algae control organisms could significantly eliminated nutrients and algae in water.After 12 days of application of this algae-controlling organism to the constructed wetland of Gonghu Bay,the Cyanobacteria elimination efficiency reached 99.8%.After 14 days,the Cyanobacteria biomass decreased by 6.1% compared with the original quantity of the constructed wetland.It showed that the combination of multi-level biological manipulation technology and constructed wetland technology could effectively control Cyanobacteria and provide a safe and effective means for solving Cyanobacteria in the lakeside zone of Gonghu Lake.

关 键 词：控藻生物 围隔试验 人工湿地技术 蓝藻 

分 类 号：S181.3[农业科学—农业基础科学]