摘要
针对我国农村饮用水处理技术落后、设施管理水平低的现状,研发出基于低水头、低通量原水直接超滤工艺。以水质良好的水库水为处理对象,研究了直接超滤工艺长期运行的稳定性和对污染物的去除效果,探讨了排泥对直接超滤效能的影响,对比了两种材质超滤膜的通量及除污效能。试验结果表明,直接超滤工艺在65 cm过滤水头和5~6 L/(m^2·h)膜通量条件下可保持长期稳定运行,出水浊度低于0.07 NTU,出水细菌总数和总大肠菌群数均满足《生活饮用水卫生标准》(GB 5749—2006)的要求。采取排泥措施可以显著提高膜池内溶解氧浓度,同时氨氮和UV_(254)去除率明显增加。
Aimed at the outdated technology of rural drinking water treatment and low level of facilities management, the process of direct uhrafihration with low head and low flux was developed. The stability and pollutant removal efficiency of the process during a long-term operation for the treatment of a high-quality reservoir water were studied. The effect of discharging sludge on the efficiency of the direct uhrafihration process was investigated, and the flux and pollutant removal performance of two membrane materials were compared. The results indicated that the process could have a long-term stable operation at water head of 65 cm and flux of 5 to 6 L/（m^2·h）. The effluent turbidity was below 0.07 NTU, the total bacterial count and total coliform bacteria could both meet the Standards for Drinking Water Quality （ GB 5749 -2006）. The removal rates of ammonia nitrogen and UV254 were significantly improved due to the increased concentration of oxygen resulted from discharging sludge from membrane tank.
出处
《中国给水排水》
CAS
CSCD
北大核心
2016年第19期53-57,共5页
China Water & Wastewater
关键词
饮用水
低水头
低通量
直接超滤
膜污染
drinking water
low head
low flux
direct uhrafihration
membrane fouling
