Simulation and Analysis of the Evolution of Surface Water Runoff in Shijiazhuang
The surface water runoff is an important water source for urban civil and industrial development in arid regions,and the change of its water quality with runoff migration is of great significance to the safe development of cities.In this paper,the PHREEQE software is used to simulate the hydrochemical migration and evolution characteristics of surface water around a study area in Shijiazhuang City,and to analyze the hydrological and hydrochemical characteristics evolution of the main ions in the surface water of typical monitoring sites under characteristic conditions.The results show that:(1)within the scope of this study,the water-rock interaction of ions in the runoff of surface water samples is weak in the process of migration;(2)with the migration of surface water runoff,the cation exchange gradually increased,and the concentrations of Al(OH)4-and Ca3(OH)42+increased significantly.The research results have certain reference value for understanding the hydrological and hydrochemical characteristics of surface water runoff in Shijiazhuang,and provide important theoretical guidance for the protection and restoration of surface water runoff.
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