混凝/超滤工艺处理北江原水的低通量运行  

Low Flux Operation of Coagulation/Ultrafiltration System for Treatment of Beijiang River Source Water

作　　者：杜星[1] 梁恒[2] 吴晓波[1] 叶挺进 陈杰[4] 林显增 黄禹坤 李圭白[1] 

机构地区：[1]哈尔滨工业大学城市水资源与水环境国家重点实验室,黑龙江哈尔滨150090 [2]城市水资源开发利用<北方>国家工程研究中心,黑龙江哈尔滨150090 [3]佛山市水业集团有限公司,广东佛山528000 [4]苏州立升膜分离科技有限公司,江苏苏州215152

出　　处：《中国给水排水》2013年第9期38-41,共4页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2011ZX07410-001-3);佛山市院市合作项目(2011BY100291)

摘　　要：通过中试研究了以北江水为原水的短流程、低通量混凝/超滤工艺的除污特性,并借助荧光EEM和紫外可见全扫描吸收光谱分析了天然有机物对膜污染的机理。结果表明:混凝/超滤工艺对天然水体中的颗粒物和有机物有较好的去除作用,对浊度、UV254、CODMn的去除率分别为(99.80±0.15)%、(48.2±6.6)%、(54.1±15.2)%;在运行周期为8 h、水洗强度为60 L/(m2.h)、气洗强度为50 m3/(m2膜池.h)、通量为17 L/(m2.h)时,TMP每天增长0.15 kPa,以60 kPa为终点计算得到化学清洗周期为270 d,说明不可逆污染较轻;造成超滤膜不可逆污染的原因主要是蛋白质或类蛋白类物质引起的膜孔堵塞。A pilot study was conducted to investigate the performance of low flux and short process coagulation/uhrafihration system for removing pollutants from Beijiang River source water. The mecha- nism of membrane fouling by natural organic matter was analyzed using UV-visible light absorbance spec- tra and excitation-emission matrix （EEM） fluorescence spectroscopy. The results showed that the coagu- lation/ultrafiltration system had high removal efficiencies of particles and organic matter in water, and the removal rates of turbidity, UV254 and CODMn were （99.80 ±0.15）%, （48.2±6.6）% and （54.1 ±15.2） % , respectively. When the filtration period, water backwashing rate, air backwashing rate and flux were 8 h, 60 L/（m2 · h）, 50 m3/（m2 · h） and 17 L/（m2 · h） , respectively, the TMP was in-creased by 0.15 kPa/d, and the chemical cleaning period calculated at 60 kPa was 270 d, which indica- ted slight irreversible fouling. The blockage of membrane pores by protein or protein-like substances was the major reason for membrane irreversible fouling.

关 键 词：混凝 超滤 短流程 膜污染 膜通量 

分 类 号：TU991.2[建筑科学—市政工程]