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研究了聚合铁铝/PDM复合药剂对黄河下游引黄高藻水库水的处理效果。烧杯试验显示,在原水浊度为15 NTU、CODMn为6.5 mg/L、藻类数为1 589×104个/L的条件下,由质量比为15∶1的聚合铁铝与PDM复合而成的混凝剂较单独聚合铁铝的除浊率提高了19.3%、对CODMn的去除率提高了19.1%。在实际应用时,15∶1的复合药剂能将滤后水浊度降至0.3 NTU以下,达到企业内控要求。此外,在相同的除浊效果下,经高锰酸钾预氧化后投加聚合铁铝/PDM复合药剂能在一定程度上减少预氯的投量,从而减少卤代有机物的形成,提高供水水质的安全性。
The effect of polymerized Fe-Al / PDM composite on water treatment of Yellow River Reach Yellow River algae reservoir was studied. The beaker test showed that the composite was made of PDM with mass ratio of 15:1 in the condition of raw water turbidity of 15 NTU, CODMn of 6.5 mg / L and algae number of 1 589 × 10 4 / L The turbidity removal rate of coagulant was increased by 19.3% and the removal rate of CODMn was increased by 19.1% compared with that of polymerized aluminum and aluminum alone. In practical application, the 15: 1 composite medicament can reduce the turbidity of filtered water to less than 0.3 NTU, meeting the requirements of internal control of enterprises. In addition, under the same decontamination effect, adding PAC / PDM compound after pre-oxidation by potassium permanganate can reduce the dosage of pre-chlorine to a certain extent, so as to reduce the formation of halogenated organic compounds and improve the quality of water supply Security.