摘要
我国农村供水设施普遍存在分散与运行管理落后的问题,导致广大农村地区的饮用水安全得不到保障。针对华南某山区优质水库水源水开发了生物活性炭耦合超滤(BAC/UF)的短流程工艺,通过考察直接超滤(UF)工艺和BAC/UF工艺的净水效能和膜污染状况,分析了短流程超滤工艺在农村供水工程中应用存在的优势和不足。结果表明,超滤优异的截留性能能够确保产水浊度低于0.1 NTU,但对水中的氨氮去除效果较差(去除率<40%),产水的氨氮指标不能满足国标要求,而BAC/UF工艺凭借生物降解作用,可以有效去除氨氮(平均去除率达96.54%),同时还能够提高对有机物的去除效果(平均去除率达35.38%),减缓超滤膜的污染。综上,对于山区水库水等优质水源,可采用BAC/UF工艺保障饮用水水质安全。
In the vast rural areas of China, drinking water quality is a serious problem due to the decentralization and backward management level of the water supply systems. This work was aimed to de- velop a short water treatment process composed of biological activated carbon and ultrafiltration to treat the reservoir water in South China. The performance of the direct UF process and biological activated car- bon coupled with UF process （BAC/UF） was studied and the advantages and disadvantages were also discussed. The results showed that the excellent rejection performance of the UF membrane could guaran- tee the turbidity of permeate to be less than 0.1 NTU. However, the removal rate of ammonium nitrogen of UF was inefficient with the average removal rate less than 40%. By contrast, the BAC/UF could effec- tively remove the ammonium nitrogen with the average removal rate of 96.54% and improve the removal rate of the organic matter meanwhile. Moreover, the membrane fouling was substantially alleviated. Over- all, it is recommended that the short water treatment process comprised of BAC and UF can be adopted for applying water with better quality when the superb source water like reservoir water is available.
出处
《中国给水排水》
CAS
CSCD
北大核心
2017年第9期16-21,共6页
China Water & Wastewater
关键词
超滤
生物活性炭
膜污染
腐殖质
水质安全
uhrafiltration
biological activated carbon
membrane fouling
humus
waterquality safety
