活性炭/超滤工艺提升和保障二次供水安全性研究

Improvement and Guarantee of Secondary Water Supply Safety by Using Activated Carbon/Ultrafiltration Process

提出了以超滤(UF)和颗粒活性炭(GAC)为基础的二次供水保障措施,对比了UF、GAC以及GAC/UF工艺对二次供水水质的保障作用。结果表明,UF可以进一步改善二次供水的感官指标并提高生物安全性。GAC可以更显著地去除有机物,同时对金属污染物也有一定的去除效果,但GAC能够消耗余氯,无法保障饮用水的生物安全性,还会出现浊度增加和颗粒物泄漏等问题。GAC/UF工艺可以充分发挥GAC和UF的除污染特性,补加消毒剂后能够更有效地改善感官、微生物和有机物指标,从而全面提高和保障饮用水水质。可见,GAC和UF工艺作为二次供水水质保障屏障具有良好的可行性和适用性。

Secondary water supply guarantee measures were put forward based on ultrafiltration （UF） and granular activated carbon （GAC） tectmologies, and the guarantee effects of UF, GAC and GAC/UF technologies on water quality of secondary water supply were compared. The results showed that UF could further improve sensory indicators and biosafety of secondary water supply. GAC could remove organic matter more significantly, and it also had a certain removal effect on metal contaminants. Howev er, GAC could consume the residual chlorine which reduced the bio-safety of drinking water, and it also led to problems of turbidity increase and particles leakage. The GAC/UF process could utilize the decontamination characteristics of GAC and UF, and the addition of disinfectants could more effectively improve the sensory, microbial and organic indicators, so quality of drinking water was comprehensively im- proved and guaranteed. Therefore, GAC and UF processes had good feasibility and applicability as security barriers of water quality of secondary water supply.