超滤膜短流程工艺处理南水北调原水的运行效能  

Operational Efficiency of Short-flow Ultrafiltration Process Treating Water from South-to-North Water Diversion Project

作　　者：张娟 牛豫海 张自力 刘书明[2] 张强 张士民 刘堪平 ZHANG Juan;NIU Yu-hai;ZHANG Zi-li;LIU Shu-ming;ZHANG Qiang;ZHANG Shi-min;LIU Kan-ping(HCIG Water Investment Co.Ltd.,Shijiazhuang 0500519 C hina;School of Environment,Tsinghua University,Beijing 100084,China)

机构地区：[1]河北建投水务投资有限公司,河北石家庄050051 [2]清华大学环境学院,北京100084

出　　处：《中国给水排水》2020年第23期37-41,共5页China Water & Wastewater

摘　　要：采用超滤膜短流程工艺处理南水北调原水,分析了超滤膜的净水效能以及膜污染情况。从出水水质分析结果可知,无论原水及膜池进水浊度如何变化,出水浊度始终稳定维持在0. 1NTU左右,出水浊度合格率为100%;出水CODMn浓度稳定控制在2. 0 mg/L以下,合格率为100%。超滤膜短流程工艺对大肠杆菌等致病微生物具有100%的去除效果,且去除效果稳定,出水水质能够达到《生活饮用水卫生标准》(GB 5749—2006)的要求。现场实际运行结果表明,膜丝在遭受严重污染时,膜通量的恢复、跨膜压差的下降需要一个较长的过程。通过调整清洗程序,膜污染得到缓解,跨膜压差维持在一个极低的范围,可实现膜系统"零污染"技术,而且此时系统运行状态良好,能耗低。Short-flow ultrafiltration(UF)purification process was used to treat water from Southto-North Water Diversion Project,and water purification efficiency and membrane fouling were analyzed.According to the results of effluent quality,no matter how turbidity in the raw water and influent of the membrane changed,effluent turbidity maintained consistently at about 0.1 NTU and its qualification rate was up to 100%,and CODMnconcentration in the effluent was always less than 2.0 mg/L and its qualification rate was also 100%.The process had 100%removal efficiency of almost all pathogenic microorganisms(such as Escherichia coli)and stable performance,and the effluent quality could meet Standards for Drinking Water Quality(GB 5749-2006).Results of field operation showed that it would take a long time to restore the membrane flux and reduce the transmembrane pressure(TMP)if the membrane was badly polluted.Membrane fouling was relieved and the TMP was maintained in a very low range by adjusting the washing procedure.Therefore,"zero-membrane fouling"technologies with good performance and low energy consumption could be realized.

关 键 词：南水北调原水 超滤膜 短流程工艺 净水效能 化学清洗 跨膜压差 

分 类 号：TU991[建筑科学—市政工程]