低频交变脉冲电絮凝气浮法修复重度富营养化水体  

Remediation of Severe Eutrophic Water Environment by Low-frequency Alternating Pulse Electrocoagulation-flotation Process

作　　者：汝旋[1] 喻泽斌[1,2] 韦武林 杨腾飞[1] 

机构地区：[1]广西大学环境学院,广西南宁530004 [2]广西华蓝设计<集团>有限公司,广西南宁530011 [3]广西南宁华鑫糖业技术有限责任公司,广西南宁530003

出　　处：《中国给水排水》2011年第9期16-20,共5页China Water & Wastewater

基　　金：广西科技开发项目(0816002-7);广西自然科学基金资助项目(0832001)

摘　　要：利用低频交变脉冲电絮凝气浮法对重度富营养化的池塘水体进行修复,探讨了电极材料、电解时间、脉冲电压、脉冲频率、占空比等参数对叶绿素a的去除率及单位去除能耗的影响。结果表明:对于叶绿素a含量为345.3～517.7 mg/m3的重度富营养化水体,选择脉冲频率为0.1kHz、脉冲电压为25 V、占空比为70%的工艺参数,采用铝电极电解20 min后对叶绿素a的去除率即可达到92.36%,对UV254的去除率为40.83%。经处理后,水体的叶绿素a含量降低至33.48mg/m3,大大降低了水体中藻类以及天然有机物的含量,表明该方法可作为蓝藻暴发时的应急处理措施,迅速有效地消除藻华。The low-frequency alternating pulse electrocoagulation-flotation process was used to remedy severe eutrophic pond water. The effect of electrode material, electrolytic time, pulse voltage, pulse frequency, duty cycle and other parameters on chlorophyll-a removal efficiency and energy consumption was investigated. The experimental results show that ： for the severe eutrophic water with chlorophyll-a concentration of 345.3 to 517.7 mg/m3, when pulse frequency of 0.1 kHz, pulse voltage of 25 V, duty cycle of 70% are used, the removal rates of chlorophyll-a and UV254 are 92.36% and 40.83% respectively after 20 rain of aluminum electrolysis. The chlorophyll-a concentration in the treated water is reduced to 33.48 mg/m3 , algae and natural organic matter concentration are greatly reduced, indicating that the process can be used as a blue-green algae outbreak response for prompt and effective elimination of algal blooms.

关 键 词：低频交变脉冲 电絮凝气浮 富营养化水体 修复 

分 类 号：X703[环境科学与工程—环境工程]