摘要
针对水源水中2-甲基异莰醇(2-Methylisocamphene,2-MIB))引起的嗅味问题,于深圳市光明区某给水厂开展粉末活性炭(Powdered activated carbon,PAC)吸附、混凝沉淀、超滤、砂滤联合去除水源水中2-MIB研究.结果表明,PAC吸附工艺可有效去除2-MIB,但会引起虹吸滤池处理负荷增加,导致滤池藻类及PAC发生穿透,进而引发滤后水及出厂水2-MIB返增.压力罐式超滤系统一体化装置占地面积较小,无需停水实施改造,可克服老旧水厂用地难等问题,通过与PAC吸附工艺相结合,可解决老旧水厂滤池效能不足缺陷,组合工艺可发挥单一技术优势,以应对2-MIB水质问题,并且可提升水厂整体出水水质.
Abstract
In response to the odor problem caused by 2-Methylisocamphene(2-MIB)in the source water,a study was conducted on the combined removal of 2-MIB from the source water by Powdered Activated Carbon(PAC)adsorption,coagulation precipitation,ultrafiltration,and sand filtration at a water supply plant in Guangming District,Shenzhen.The results indicate that the PAC adsorption process can effectively remove 2-MIB,but it will cause an increase in the treatment load of the siphon filter,leading to the penetration of algae in the filter and causing a backflow of 2-MIB in the filtered water and effluent.The integrated device of pressure tank ultrafiltration system takes up a small area and does not require water shutdown for renovation.It can overcome the problems of difficult land use in old water plants.By combining with PAC adsorption process,the insufficient efficiency of old water plant filters can be solved.The combined process can leverage the advantages of a single technology to address the 2-MIB water quality problem and improve the overall effluent quality of the water plant.
维普
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