【摘要】 对聚合氯化铝铁溶液的pH值、可见光OD460、形态分布等性质随羟铁比BFe=[OH-] [Fe3+]的变化规律进行了研究。结果表明,BFe能有效地统一聚合氯化铝铁溶液中的铝铁比和碱化度两参数,且可以表征铝铁共聚物的聚合程度;BFe与铝铁多核羟基络合物的含量Mb呈一定的线性关系,BFe越大,Mb越大,混凝除藻效果亦越好。提出在聚合氯化铝铁的制备过程中BFe是一个至关重要的控制参数。只有当BFe>3时,铝铁体系中才能形成稳定的、高聚合度的铝铁共聚物。更多还原

【Abstract】 This paper studies the relation ship between the hydroxyl-iron ratio(.B.(Fe)=\/\) and the pH value,.OD.(460) and morphological characteristics of polymeric aluminum-ferric chloride(PAFC). The results show that .B.(Fe) can unite basicity(.B.) and alum-iron ratio of PAFC and reveal the aggregate of alum-ferric polymers. The relation between .B.(Fe) and the intermediate multinuclear complex compounds(.M.(b)) is linear. The bigger .B.(Fe) is, the more .M.(b) is and the greater effect of alga removal by coagulation there is. The hydroxyl-iron ratio is a key parameter during PAFC preparation,and only in the range of .B.(Fe)>3 can the solution of PAFC form the stable high-aggregate alum-ferric polymers.更多还原