不同粒径砂滤池处理微污染水源水的运行效果评价  

Evaluation of Operational Performance of Filter Packed with Different Particle Size Sands for Treating Micro‑polluted Source Water

作　　者：张晓娜 胡小芳 何嘉莉 巢猛 ZHANG Xiao‑na;HU Xiao‑fang;HE Jia‑li;CHAO Meng(Dongguan Water Group Water Supply Co.Ltd.,Dongguan 523112,China)

机构地区：[1]东莞市水务集团供水有限公司,广东东莞523112

出　　处：《中国给水排水》2024年第1期45-50,共6页China Water & Wastewater

摘　　要：针对微污染水源水,通过生产性试验对比不同粒径砂滤池对颗粒数、无脊椎动物、氨氮、荧光溶解性有机物和消毒副产物的去除效果,并结合出水阀开度分析滤池水头损失的变化情况。结果表明,细砂滤池出水颗粒数明显低于常规砂滤池,更能保障出水水质;细砂滤池对无脊椎动物的平均去除率为97%,控制效果更稳定;细砂滤池抗氨氮冲击负荷的能力更强,响应更快,相比常规砂滤池,氨氮去除量可提高0.80 mg/L。三维荧光光谱分析表明,待滤水主要包含芳香性蛋白质类物质和溶解性微生物代谢产物类物质,细砂滤池对荧光溶解性有机物的去除效果略好于常规砂滤池。细砂滤池对消毒副产物前体物控制效果更佳。在相同运行时间内,细砂滤池水头损失增长率高于常规砂滤池,应根据进水水质合理调整细砂滤池反冲洗周期。This paper compared the performances of two filters packed with different particle size sands for the removal of particulates,invertebrates,ammonia nitrogen,fluorescent dissolved organic matter and disinfection by‑products from micro‑polluted source water through productive tests,and analyzed the change of filter head loss in combination with the opening of outlet valve.The particulates in effluent from the fine sand filter were significantly lower than that of the conventional sand filter,indicating that the former had better effluent quality.The fine sand filter demonstrated an average removal rate of 97%for invertebrates,and showed a more stable control performance.The fine sand filter had stronger capacity in resistance to shock load and faster response to ammonia nitrogen,and its ammonia nitrogen removal was increased by 0.80 mg/L compared with the conventional sand filter.Threedimensional fluorescence spectrum analysis showed that the water to be filtered mainly contained aromatic protein substances and soluble microbial metabolites,and the performance of the fine sand filter for fluorescent dissolved organic matter removal was slightly better than that of the conventional sand filter.In contrast,the fine sand filter demonstrated better performance for control of the precursors of disinfection by‑products.In the same operating period of time,the growth rate of head loss of the fine sand filter was higher than that of the conventional sand filter,so the backwashing cycle of the fine sand filter should be adjusted reasonably according to the influent quality.

关 键 词：微污染水源水 砂滤池 粒径 三维荧光光谱 运行效果 

分 类 号：TU991[建筑科学—市政工程]