超滤纳滤双膜工艺处理珠江西航道水源水的试验研究  

Experimental study on the treatment of Pearl River Western Navigation channel raw water by ultrafiltration-nanofiltration dual membrane process

作　　者：尹文选 赫俊国 张道义 吴雨晴 郑凤宜 谭俊杰 钟志聪 肖克勤 YIN Wenxuan;HE Junguo;ZHANG Daoyi;WU Yuqing;ZHENG Fengyi;TAN Junjie;ZHONG Zhicong;XIAO Keqin(Guangzhou Municipal Engineering Design and Research Institute Co.,Ltd.,Guangzhou 510095,China;School of Civil Engineering,Guangzhou University,Guangzhou 510000,China;Guangzhou Municipal Water Supply Co.,Ltd.,Guangzhou 510600,China)

机构地区：[1]广州市市政工程设计研究总院有限公司,广州510095 [2]广州大学土木工程学院,广州510000 [3]广州市自来水有限公司,广州510600

出　　处：《给水排水》2024年第7期54-62,共9页Water & Wastewater Engineering

摘　　要：针对广州市长距离引水运行成本大的问题,以本地珠江西航道水源开展预处理-常规工艺-超滤+纳滤双膜工艺试验研究,考察试验工艺对原水的处理效能,为广州市启动本地水源提供工艺、技术与参数支持。结果表明:预处理-常规工艺对水质常规污染物去除效果良好,常规出水基本满足国标,再经双膜工艺处理后,常规污染物浓度可进一步降低,纳滤出水色度、COD_(Mn)以及氨氮的浓度分别低至0.99度、0.84 mg/L以及0.02 mg/L。三维荧光及有机物相对分子质量分析结果表明,预处理-常规工艺可去除接近40%的荧光物质及小分子有机物,再经双膜工艺处理后,纳滤出水荧光物质去除超过80%,小分子有机物去除则超过60%。突发污染试验表明,预处理-常规工艺对新污染物去除效果有限,去除率约为20%~40%,而双膜工艺则具备高效应对常规污染物与新污染物的能力,增加双膜工艺后,试验工艺对两种常规污染物以及五种新污染物去除率均>90%。膜污染分析发现,造成超滤膜污染的主要荧光物质为色氨酸类蛋白质、类富里酸物质以及类腐殖酸物质,纳滤膜则主要为色氨酸类蛋白质,而造成两者膜污染的无机元素均主要为Ca、Si、Na、K等元素。In response to the issue of high operational costs associated with long-distance water diversion in Guangzhou,an experimental study was conducted on the local water source from the Pearl River’s western navigation channel,utilizing apre-treatment+conventional process+ultrafiltration-nanofiltration dual membrane process.The study aimed to investigate the treatment efficiency of the experimental process on raw water,providing process,technical,and parameter support for Guangzhou to initiate the use of local water sources.The experimental results indicate that the pre-treatment+conventional process effectively removes conventional pollutants from the water,with the output water generally meeting the Sanitary Standards for Drinking Water(GB 5749-2022).After further treatment with the dual membrane process,the concentration of conventional pollutants can be further reduced,with the nanofiltration output water showing color,COD_(Mn),and ammonia nitrogen concentrations as low as 0.99degrees,0.84 mg/L,and 0.02 mg/L,respectively.Three-dimensional fluorescence and analysis of the relative molecular mass of organic substances reveal that the pre-treatment+conventional process can remove nearly 40%of fluorescent substances and small molecular organic matter.After the dual membrane process treatment,more than 80%of fluorescent substances and over 60%of small molecular organic matter are removed.Emergency pollution tests show that the pre-treatment+conventional process has limited effects on the removal of new pollutants,with a removal rate of about 20%to 40%.In contrast,the dual membrane process is highly efficient in dealing with both conventional and new pollutants,with the removal rates for two types of conventional pollutants and five types of new pollutants all exceeding 90%after incorporating the dual membrane process.Membrane fouling analysis found that the main fluorescent substances causing ultrafiltration membrane fouling are tryptophanlike proteins,fulvic-like substances,and humic-like substances,while for the na

关 键 词：超滤-纳滤双膜工艺 珠江西航道水源 去除效能 突发污染 膜污染 

分 类 号：TU991[建筑科学—市政工程]