张家港市第四水厂纳滤膜处理系统运行经验总结  

Summary of operation experience of nanofiltration membrane treatment system in Zhangjiagang No.4 water treatment plant

作　　者：李涛 贺鑫 王少华 施立宪 高健 唐玉霖[2] LI Tao;HE Xin;WANG Shaohua;SHI Lixian;GAO Jian;TANG Yulin(Zhangjiagang Water Supply and Drainage Co.,Ltd.,Jiangsu 215600,China;Key Laboratory of Urban Water Supply,Water Saving and Water Environment Governance in the Yangtze River Delta of Ministry of Water Resources,College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]张家港市给排水有限公司,江苏215600 [2]同济大学环境科学与工程学院,水利部长三角城镇供水节水及水环境治理重点实验室,上海200092

出　　处：《给水排水》2024年第6期43-49,共7页Water & Wastewater Engineering

摘　　要：张家港市第四水厂扩建工程项目以长江水为原水,采用混凝-沉淀-超滤-纳滤的双膜深度处理工艺。日总产水能力为21.1万m^(3)/d,其中纳滤日产水量为10万m^(3)/d。收集纳滤水厂长期运行数据,包括SDI、余氯、浊度、压力变化、纳滤单元主要监测指标(电导率、COD、TDS)、清洗药剂、水厂设备等,分析总结纳滤系统目前运行模式、冲洗策略、杀菌操作、产水水质、电耗药耗等方面运行经验。同时,针对运行过程中出现的温度影响膜处理效率、纳滤膜污染控制和水厂清洗管道冲突等问题,分析并提出解决措施,以期为行业相关案例提供借鉴和参考。The expansion project of Zhangjiagang No.4 drinking water treatment plant adopted a double membrane advanced treatment process of"coagulation-sedimentation-ultrafiltration-nanofiltration(NF)"using Yangtze River water as raw water.The total daily water production capacity was 211000 m^(3),and the daily water production capacity of NF system was 100000 m^(3).This paper collected long-term operational data of NF water plant,including SDI,residual chlorine,turbidity,pressure changes,main monitoring indicators of NF units(conductivity,COD and TDS),cleaning agents,water plant equipment,etc.,mainly summarized the operation experience and discussion of the NF system in the current operation mode,washing strategy,sterilization operation,water quality,consumptions of power and reagents.An analysis was conducted on the impact of temperature on membrane treatment efficiency,control of membrane fouling,and conflicts in water plant cleaning pipelines,and proposed the related solutions in the operation process.Hope to provide reference for industry related cases.

关 键 词：张家港第四水厂 纳滤 深度处理 运行维护 

分 类 号：TU991[建筑科学—市政工程]