CE-QUAL-W2模型中汞循环模块的嵌套及应用  

Mercury cycling module coupled in CE-QUAL-W2 model and its application

作　　者：朱森林[1,2] 张忠龙 杨国录 Zhu Senlin;Zhang Zhonglong;Yang Guolu(State Key Laboratory of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430072, China;Nanjing Hydraulic Research Institute, Nanjing 210029, China;Environmental Laboratory, U.S. Army Engineer Research and Development Center, Davis 95616, CA, USA)

机构地区：[1]武汉大学水资源与水电工程国家重点实验室,湖北武汉430072 [2]南京水利科学研究院,江苏南京210029 [3]美国陆军工程兵团环境研究与发展中心环境实验室,戴维斯,加利福尼亚州95616

出　　处：《华中科技大学学报（自然科学版）》2018年第4期110-114,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家重点研发计划资助项目(2016YFC0401506)

摘　　要：将汞的循环模块与CE-QUAL-W2模型进行耦合,用于模拟水体中汞的输移与循环过程.CE-QUAL-W2模型中汞循环模块可以模拟的物理及生物化学过程包括：汞种类与多组分的固体颗粒的吸附与解吸,沉降及再悬浮,吸附态的汞在底泥层的掩埋,水体与底泥层的扩散交换、挥发,以及汞种类之间的生物地球化学转化.采用2007及2008年万山汞矿区下溪河的实测资料对模型进行验证,模拟结果表明CE-QUAL-W2模型可以较好地模拟下溪河的总汞和甲基汞的迁移转化特征,汞模拟结果的相对误差一般在10%以内.该试验也表明CE-QUAL-W2模型可以用于预测分析水体中复杂的汞的输移与循环过程.CE-QUAL-W2 model was modified and enhanced to include a mercury（Hg） cycling module for simulating Hg transport and cycling in water bodies.The Hg cycling module in CE-QUAL-W2 was able to model the physical and biochemical processes including adsorption and desorption of Hg species on multi-solids,settling and resuspension,sediment burial of adsorbed Hg,diffusive exchange between water column and sediment layer,volatilization,and biogeochemical transformations among Hg species.The CE-QUAL-W2 model was evaluated using the Xiaxi River data collected in 2007 and 2008.Model results show that CE-QUAL-W2 is able to predict the total Hg and methylmercury concentrations observed for the Xiaxi River.This application also demonstrated the CE-QUAL-W2 model capability in predicting complex transport and cycling of Hg species in water bodies.

关 键 词：CE-QUAL-W2 汞循环 耦合 模拟 甲基汞 

分 类 号：X522[环境科学与工程—环境工程]