超声波法对微囊藻的去除和抑制作用研究  

Removal and Inhibition of Microcystin Algae Included in Wastewater by Ultrasonic Method

作　　者：徐鹏飞[1] 汪苹[1] 刘堃[1] 

机构地区：[1]北京工商大学食品学院,北京100048

出　　处：《环境科学与技术》2014年第2期48-52,共5页Environmental Science & Technology

基　　金：国家"十二五"科技支撑课题:1万吨/年富含蛋白质发酵残渣高值化利用技术及示范(2011BAC11B06)

摘　　要：超声波法可以通过破坏细胞壁达到直接除藻和抑制活体细胞生长的2种作用处理废水中微囊藻。以铜绿微囊藻的3种不同藻株为实验对象,对超声法直接去除微囊藻和超声法抑制微囊藻生长的影响因素分别进行单因素平行实验。采用叶绿素a含量作为活体藻细胞指标,分别对超声法除藻、抑藻的最佳条件进行了分析。结果显示,超声法对铜绿微囊藻不同藻株的去除效果基本一致,选用对数增长期的微囊藻在超声功率为1 200 W、超声时间为7 min时,叶绿素a去除率为82%,对微囊藻的直接去除效果最好。改变超声模式,采用多频次间歇超声模式(超声总能量相同):超声功率为1 200 W、隔1天超声2 min,共超声4次,培养14 d后与对照组相比,最终叶绿素a含量下降了95%,有更佳的微囊藻抑制效果。Ultrasonic method can be achieved by breaking cell wall to remove algae directly and inhibit the growth of living cells to manage the algae included in the wastewater. 3 different algal species of Microcystis aerugionsa were selected.The influence factors of directly removing algae and inhibition of algae were parallel to the single factor experiment.Using chlorophyll a content as an index of riving algal cells, the best condition on removal and inhibition of algal was analyzed. Results showed that effects on different algal species of ultrasonic were almost the same. Logarithmic growth of the algae was dealt with ultrasonic in 1 200 W and maintaining 7 rain, chlorophyll-a removal rate was 82%, which was the best condition of directly removing algae. Changing the mode of ultrasonic, using the intermittent ultrasound with the same ultrasonic energy, ultrasonic in 1 200 W, ultrasonic 2 rain every 2 days for 4 times, and compared with the control group cultivated for 14 days, the chlompriyll a content decreased by 95%, which can obtain the best effect on inhibition of algae.

关 键 词：超声波 除藻 抑藻 

分 类 号：X703.1[环境科学与工程—环境工程]