高分子凝聚剂凝聚效果的评价方法与最佳添加量

在稀悬浮液体系的絮凝沉淀中,硫酸铝和微阴离子性聚合物并用时聚合物的效果及其最佳添加量,是以絮状物的沉降速度和透射光强度的变化为指标进行研究的。其结果:既定聚合物添加量时硫酸铝的最佳添加量是以絮状物形成速度及絮状物直径的最大值(Kmax及Dtmax)、沉降速度式中系数a的最大值、系数n的最小值确定。根据(9)式、(10)式或(15)式、(16)式计算得出。从水处理的经济观点考虑,认为聚合物的添加量是Kmax,Dtmax折射点(Cp-ref)以下的添加量。

The Assessment Method and Optimum Concentration of Coagulation-flocculation Effect of High Polymer Coagulant

The Settling speed and refraction light strength of coagulant in coagulation-flocculation settling of agueous suspension were discussed to assess coagulation-flocculation effect and optimum concentration for alumimium sulphate and anion polymer.The results showed that optimum concentration of aluminium sulphate was determined by shaping speed and max. diameter of flocculant (K_(max) and Dt_(max)), maximum x, minimum n in formula of settling speed, which were derived from formula(9),(10)or formula (15),(16). With respect of cost effective analysis of wastewater treatment, the concentration should be lower than refraction point(Cp-ref)of K_(max),Dt_(max).