Mathematical model for interactions and transport of phosphorus and sediment in the Three Gorges Reservoir

被引:117
作者
Huang, Lei [1 ]
Fang, Hongwei [1 ]
Reible, Danny [2 ]
机构
[1] Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China
[2] Texas Tech Univ, Dept Civil & Environm Engn, Lubbock, TX 79409 USA
基金
中国国家自然科学基金;
关键词
Phosphorus transport; Sediment transport; Mathematical model; Three Gorges Reservoir; YANGTZE-RIVER; SIMULATION; WATER; EUTROPHICATION; ECOSYSTEMS; ADSORPTION; MORPHOLOGY; PHOSPHATE; DYNAMICS; CHINA;
D O I
10.1016/j.watres.2015.08.049
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Phosphorus fate and transport in natural waters plays a crucial role in the ecology of rivers and reservoirs. In this paper, a coupled model of hydrodynamics, sediment transport, and phosphorus transport is established, in which the effects of sediment on phosphorus transport are considered in detail. Phosphorus adsorption is estimated using a mechanistic surface complexation model which is capable of simulating the adsorption characteristics under various aquatic chemistry conditions. The sediment dynamics are analyzed to evaluate the deposition and release of phosphorus at the bed surface. In addition, the aerobic layer and anaerobic layer of the sediments are distinguished to study the distribution of phosphorus between dissolved and particulate phases in the active sediment layer. The proposed model is applied to evaluate the effects of various operating rules on sediment and phosphorus retention in the Three Gorges Reservoir (TGR). Results show that the proposed model can reasonably reflect the phosphorus transport with sediment, and management scenarios that influence sediment retention will also influence the phosphorus balance in the TGR. However, modest operational changes which have only minor effects on sediment retention also have limited influence on the phosphorous balance. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码:393 / 403
页数:11
相关论文
共 40 条
[1]   Simulation of stream discharge and transport of nitrate and selected herbicides in the Mississippi River Basin [J].
Broshears, RE ;
Clark, GM ;
Jobson, HE .
HYDROLOGICAL PROCESSES, 2001, 15 (07) :1157-1167
[2]   Eutrophication downstream from small reservoirs in mountain rivers of Central Spain [J].
Camargo, JA ;
Alonso, K ;
de la Puente, M .
WATER RESEARCH, 2005, 39 (14) :3376-3384
[3]   Surface charge distribution and its impact on interactions between sediment particles [J].
Chen, Ming-hong ;
Fang, Hong-wei ;
Huang, Lei .
OCEAN DYNAMICS, 2013, 63 (9-10) :1113-1121
[4]   Analysis of the complex morphology of sediment particle surface based on electron microscope images [J].
Chen ZhiHe ;
Fang HongWei .
SCIENCE CHINA-TECHNOLOGICAL SCIENCES, 2013, 56 (02) :280-285
[5]   Enhanced Understanding of Sediment Phosphorus Dynamics in River Systems with a Simple Supplemental Mass Balance Tool [J].
Chomat, Catherine J. ;
Westphal, Kirk S. .
JOURNAL OF ENVIRONMENTAL ENGINEERING, 2013, 139 (01) :34-43
[6]  
Chu X.F., 2011, J ENV ENG, V138, P152
[7]   Simulation of reactive transport of uranium(VI) in groundwater with variable chemical conditions [J].
Curtis, GP ;
Davis, JA ;
Naftz, DL .
WATER RESOURCES RESEARCH, 2006, 42 (04)
[8]  
CWRC (Changjiang Water Resource Committee), 2000, B YANGTZ RIV SED
[9]   A preliminary estimate of human and natural contributions to the decline in sediment flux from the Yangtze River to the East China Sea [J].
Dai, S. B. ;
Lu, X. X. ;
Yang, S. L. ;
Cai, A. M. .
QUATERNARY INTERNATIONAL, 2008, 186 :43-54
[10]  
Davis J. A., 1990, REV MINERALOGY, V23, P177