交变电磁场磁化PFS混凝处理出水中残留铁的实验研究

Experimental Research on Residue Iron in Effluent Water Treated by Alternating Electromagnetic Field Magnetized PFS Coagulation

以混凝出水中的余铁含量为指标,分析在处理低温低浊水中电磁场强度、频率、磁化时间、投加药量、水样p H值对余铁量的影响。交变电磁场磁化PFS后,提高了PFS在混凝中的利用率,在同等条件下,经交变电磁处理PFS混凝的出水中含铁量比常规条件降低了46%,且投药量降低45%,并通过实验得出影响出水中余铁因素的主次顺序为:磁化时间>磁场强度>药剂投加量>频率。实验参数为:电磁场强度2.652 m T;频率90 Hz;磁化时间3 min;投加药量3 m L。

As the different quantity of residue iron in low temperature and low turbidity water after coagulation,the impacts of the residue iron are analyzed from different aspects,such as from the intensity and frequency of alternating electromagnetic field,magnetizing time,the dosing quantity,the p H of water. The utilization rate of PFS in coagulation process is boosted after PFS was magnetized with alternating electromagnetic. With comparing of coagulation outlet water which is treated with magnetized PFS and normal water,the quantity of iron decrease 46%,the dosing quantity drop 45%. In addition,based on the experiment results,it indicates that the order of factors which can influence the residue iron quantity in coagulation outlet water is that magnetizing time intensity of magnetic field dosing cost frequency of alternative electromagnetic field. The parameters of experiment are that the intensity of magnetic field is 2. 652 m T,the alternative electromagnetic field frequency is 90 Hz,the magnetizing time is 3 min and the dosing cost is 3 m L.