摘要
通过室内实验和原位应用分析,评估了气动混凝技术及其与锁磷剂联合使用对藻类去除与控制的效果。结果表明,硅藻土能有效提升聚合氯化铝(PAC)对蓝藻的絮凝沉降效果;气动可代替机械搅拌用于水体藻类混凝沉降。曝气强度越高、时间越短,则除藻效果越好。当曝气量达到2 L/(L·min)、曝气时间为15 s时,对叶绿素a的去除率可以达到80%以上。原位应用结果显示,气动混凝与锁磷剂联合使用后水体中叶绿素a浓度持续下降,对叶绿a的去除率最高可达97.7%。可见,气动混凝是快速去除水体中藻类的有效手段,与锁磷剂联合使用可达到长效控藻效果。
This paper evaluated the algae removal and control performances of pneumatic coagulation combined with Phoslock through indoor experiments and in situ application analysis.Diatomite effectively improved the cyanobacteria flocculation and precipitation performance of polyaluminum chloride(PAC).Pneumatic mixing could replace mechanical agitation for algae coagulation and sedimentation in water.The higher aeration intensity and shorter aeration time could obtain a better algae removal performance.When the aeration rate reached 2 L/(L·min)and the aeration time was 15 s,the removal rate of chlorophyll a was more than 80%.The in situ application showed that the concentration of chlorophyll a in water decreased continuously after treated by the combination of pneumatic coagulation and Phoslock,and the removal rate of chlorophyll a was up to 97.7%.Therefore,pneumatic coagulation is an effective approach for rapid removal of algae from water,and its combination with Phoslock can achieve long-term algal control.
作者
黄小龙
陈文峰
冯立辉
胡红娟
刘剑彤
张航
HUANG Xiao-long;CHEN Wen-feng;FENG Li-hui;HU Hong-juan;LIU Jian-tong;ZHANG Hang(Yangtze River Basin Ecological Environment Monitoring and Scientific Research Center,Yangtze River Basin Ecological Environment Supervision and Administration Bureau,Ministry of Ecological Environment,Wuhan 430010,China;CCCC Second Harbor Engineering Co.Ltd.,Wuhan 430070,China;Institute of Hydrobiology,Chinese Academy of Sciences,Wuhan 430072,China;Hubei Water Resources and Hydropower Science and Technology Information Center,Hubei Water Resources Research Institute,Wuhan 430070,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2023年第15期75-80,共6页
China Water & Wastewater
基金
国家自然科学基金资助面上项目(52070190)
国家自然科学基金长江水科学研究联合基金资助项目(U2240213)。
关键词
气动混凝
硅藻土
锁磷剂
藻类去除
pneumatic coagulation
diatomite
Phoslock
algae removal
作者简介
黄小龙(1989-),男,湖北松滋人,博士,高级工程师,主要研究方向为污染生态学与水体生态修复,E-mail:h.xl0210@163.com;通信作者:胡红娟,E-mail:huhongjuan@ihb.ac.cn。
