涡漩水流对混凝沉淀效果影响的研究

Study on Effect of Eddy Flow on Coagulative Precipitation

应用粒子图象测速技术,建立了研究往复隔板絮凝池涡漩流场的室内测试系统,对往复隔板絮凝池拐弯处水流涡漩运动进行了研究。运用粒子图象测速技术,可进行多点同步测量,获得速度随时间变化的平面和空间分布。因该技术是非接触式的,不干扰流场,故提高了可靠性。使用量测系统软件,对不同方案的涡漩运动进行了分析,并对混凝沉淀效果进行了比较。

Using PIV technology, a set of system for measur-ing eddy flow of the reciprocating baffled flocculationtank could be established in the laboratory. The eddymotion of flow on the corner of the flocculation tankhas been studied. Using PIV technology, many pointscould be measured in step, meanwhile distribution ofplane and space on velocity with time was obtained.Because the technology is untouched, flow field is notdisturbed, reliability is increased. The software ofmeasurement system could be used, in addition theeddy motion flow was analyzed for different condi-tions, and coagulative precipitation being compared.