基于QUAL2k模型的砾石生物滤床对河道水质净化效果模拟研究  

Simulation Research on the Effect of the Gravel Filter Bed on the River Water Purification Based on QUAL2k Model

作　　者：翟敏婷 张云 张弛 薛树红 李飘飘 ZHAI Min-ting;ZHANG Yun;ZHANG Chi;XUE Shu-hong;LI Piao-piao(PowerChina Northwest Engineering Cooperation Limited,Xi’an 710000,China;Shaanxi Province Institute of Water Resources and Electric Power Investigation and Design,Xi’an 710000,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,西安710000 [2]陕西省水利电力勘测设计研究院,西安710000

出　　处：《中国农村水利水电》2022年第6期29-33,39,共6页China Rural Water and Hydropower

摘　　要：为解决水质处理提升工程中生物砾石滤床技术在应用过程中关于滤床规模参数的确定以及不同规模、不同边界条件的滤床对不同区域条件、不同污染程度河道的污染处理效果模拟预测等问题,以汉中某水系为例,基于QUAL2k水质模型,结合室内小型概化实验监测成果,模拟研究不同工况下砾石滤床对河道水质净化效果。结果表明,夏季200 m长的滤床对NH_(4)^(+)-N、PO_(4)^(3-)-P、COD的去除率最高分别为51.5%、54.3%、54.1%,可将控制断面PO_(4)^(3-)-P、COD提升至《地表水环境质量标准》(GB 3838-2002)Ⅲ类水标准,将NH_(4)^(+)-N提升至Ⅳ类水标准;冬季400 m的滤床对NH_(4)^(+)-N、PO_(4)^(3-)-P、COD的去除率最高分别为68.6%、57.5%、51.1%,实现COD达到Ⅲ类水、PO_(4)^(3-)-P接近Ⅳ类水的水质目标。To solve the water treatment engineering of biological filter bed gravel drive technology in the process of application of filter bed scale parameters and different size,different boundary conditions to determine the filter bed with different regional conditions,different degree of pollution of river pollution treatment effect simulation prediction problem,this paper is used as an example in Hanzhong water system based on water quality QUAL2k model to generalize the experimental monitoring results combining the indoor small simulations under different working conditions of gravel filter bed of river water quality purification effect.The results show that the maximum removal rates of NH_(4)^(+)-N,PO_(4)^(3-)-P and COD of the filter bed at 200 m in summer are 51.5%,54.3%and 54.1%,respectively,which can improve the PO_(4)^(3-)-P and COD of the controlled cut water to the ClassⅢwater standard and NH_(4)^(+)-N to the ClassⅣwater standard.In winter,the removal rates of NH_(4)^(+)-N,PO_(4)^(3-)-P and COD of the 400 m filter bed are 68.6%,57.5%and 51.1%,respectively,realizing the water quality goal of COD reaching ClassⅢwater and PO_(4)^(3-)-P approaching ClassⅣwater.

关 键 词：QUAL2k模型 砾石生物滤床 水质模拟 水质净化 

分 类 号：TV854[水利工程—水利水电工程] X522[环境科学与工程—环境工程]