放养鲢鱼预处理高藻原水的除藻效能及特性  

Effectiveness and Characteristics of Treating Algae-Laden Raw Water by Stocking Silver Carp

作　　者：范振强[1] 崔福义[1] 马华[1] 何文杰[2] 阴沛军[2] 

机构地区：[1]哈尔滨工业大学城市水资源与水环境国家重点实验室,哈尔滨150090 [2]天津自来水集团有限公司,天津300040

出　　处：《环境科学》2008年第3期632-637,共6页Environmental Science

基　　金：国家自然科学基金项目(50778048)

摘　　要：为减轻藻类对水厂常规处理工艺净水效能的影响,在某水厂预沉池中进行了放养滤食性鲢鱼去除高藻水中藻类的生产性试验研究.结果表明,以水华微囊藻为优势种的高藻原水经过在水厂预沉池放养鲢鱼进行预处理之后,藻类总量、蓝藻和水华微囊藻含量分别下降了了61.8%7、6.1%和78.2%.原水藻类含量的大幅降低有效减轻了后续常规工艺的藻类负荷,为水处理创造了有利条件.分析认为鲢的滤食选择和不同的藻类规格是对蓝藻和绿藻不同去除效率的原因.试验表明,放养鲢鱼的生物控制技术适用于处理群体性蓝藻占优势地位的高藻原水.To reduce the negative effect of algae on conventional water treatment, a full-scale research of removing algae from algae-laden raw water by stocking filter-feeding silver carp was processed. After the pretreatment in a presedimentation tank with silver carp, the concentration of phytoplankton, the biomass of cyanobacteria and Microsystisflos-aquae in algae-laden raw water with Microsystis flos-aquae its dominant species decreased 61.8 %, 76.1% and 78.2% respectively. This effective decrease of algae load on conventional process created favorable conditions for water treatment. Analysis indicates that food habit of silver carp and algae size are two causes of different removal efficiency between cyanobacteria and green algae. The results show that biomanipulation of silver carp is applicable for treating algae-laden raw water in which colonial cyanobacteria is dominant.

关 键 词：鲢 高藻原水 预沉池 生物控制 蓝藻 

分 类 号：X52[环境科学与工程—环境工程] TU991.2[建筑科学—市政工程]