水厂排泥水浓缩性能研究

采用E．φ库尔加耶夫方法对两个水厂排泥水的浓缩性能进行了分析研究。研究结果说明由于闵行原水悬浮固体含量较临江原水为高,投加混凝剂量较临江为低。故临江排泥水中自由凝絮的比浓度r0、凝絮密度r02较闵行厂为低,含水量指标Wo,WB较闵行厂为高,从而浓缩系数a较闵行厂为小,反映悬浮颗粒中单位体积干燥物质上的粘附力Pa,,对沉淀池排泥水而言,在不加PAM时,临江厂较高,加入PAM后,Pa’大大提高,文章最后对排泥水浓缩池积泥高度进行了计算。

Study on the Thickening Properties of Water Plants Sewage

In this paper, the sewage thickening properties of 2 water plants were studied and compared. Re sults obtained indicated that: specific conc. and density of the free floc r0 and r02 of the sewage disposed by Linjiang plant are less than those disposed by Minhang plant, whereas the parameters related to water content WO and WB are greater than those of Minhang, therefore the thickening coefficient "a" are less than those of Minhang. Adhe-sion force per unit volume of dried matters of suspended particles of sewage of sedimentation basin of Linjiang is greater than Minhang. After adding PAM, the values of Pa' are greatly increased. At last, calculation of the height of the thickened sewage in a thickening tank was illustrated.