摘要
为提高北方某给水厂水资源利用率,采用纳滤工艺对超滤产水进行深度处理,对比研究了5种纳滤膜(T膜、H膜、F膜、N270膜与N90膜)对出水水质的提升效果,探讨了三维荧光及紫外(差分)光谱法对典型消毒副产物(DBPs)的指示作用。结果表明,N90膜对超滤产水中的三氯甲烷(TCM)和一溴二氯甲烷(BDCM)的截留率最为理想,分别为76.29%和100%,N270膜次之,而T膜截留效果最差。采用三维荧光平行因子分析法(EEM-PARAFAC)分析纳滤进出水得到C1类富里酸、C2类腐殖酸以及C3微生物代谢产物,同时利用差分光谱进行高斯拟合得到A1~A44个特征峰。基于EEM-PARAFAC分析得到的C2组分与TCM相关性最高为0.83,通过差分光谱分析得到的A3与BDCM相关性最高0.68。
To enhance water resource utilization at a water treatment plant in North,Nanofiltration(NF)technology was employed to treat Ultrafiltration(UF)effluent derived from the backwash water of the plant's filtration process.A comparative investigation was conducted to assess the impact of five distinct NF membranes(T membrane,H membrane,F membrane,N270 membrane,and N90 membrane).on the quality improvement of the treated water.Additionally,this study explored the applicability of the EEM and UV spectroscopy(Different absorbance)in indicating the presence of typical DBPs.The results revealed that the N9O membrane exhibited the ideal retention rates for TCM and BDCM in the UF effluent,achieving 76.29%and 100%respectively.The N270 membrane followed closely,while the T membrane demonstrated a comparatively lower retention effect.EEM-PARAFAC analysis of the UF effluent identified major components such as C1 fulvic acid,C2 humic acid,and C3 microbial metabolites.Furthermore,Gaussian fitting of different absorbance spectroscopy(DAS)in influent and effluent water revealed four characteristic peaks denoted as A,to A,.Correlation analysis between spectral parameters and DBPs indicated that,for TCM,the component C2 derived from PARAFAC analysis exhibited the highest correlation coefficient at 0.83.In the case of BDCM,the highest correlation at O.68 was observed with A,obtained from DAS.This study aimed to identify the most suitable NF membrane for improving the water quality of the plant and provides valuable insights for predicting subsequent water quality regarding the impact of DBPs on regeneration and reuse.
作者
王一帆
邱晓鹏
张静
杨非凡
李晓良
冯民权
顾军农
郑兴
WANG Yifan;QIU Xiaopeng;ZHANG Jing;YANG Feifan;LI Xiaoliang;FENG Minquan;GU Junnong;ZHENG Xing(State Key Laboratory of Eco-hydraulics in North west Arid Region,Xi'an University of Technology,Xi'an 710048,China;Technology Research Institute of Beijing Water Supply Group Co.,Ltd.,Beijing 100101,China;Department of Civil Engineering,University of British Columbia,Vancouver V6T1Z4,Canada;School of Environment and Natural Resource,Zhejiang University of Science and Technology,Hangzhou 310018,China)
出处
《给水排水》
CSCD
北大核心
2024年第6期85-91,共7页
Water & Wastewater Engineering
基金
国家自然科学基金(52100104、52170053)。
关键词
纳滤
三维荧光光谱
差分光谱
消毒副产物
Nanofiltration
Three-dimensional fluorescence spectroscopy
Different absorbance spectroscopy
Disinfection byproducts
