Simulation of the Effect of Rural River Ecological Management Mode on Water Quality Improvement
With the comprehensive implementation of the river chief system and the rural revitalization strategy,the ecological management actions of rural rivers have been launched one after another throughout the country,and the rural water environment has attracted much attention.This paper established a hydrodynamic-water quality coupling model of rural river.By simulating the changes of pollutant concentration in the river under three ecological management modes(ecological floating bed,ecological revetment and ecological wetland),the water quality improvement effects of different management modes on the river were analyzed.The study shows that the ecological wetland has the best effect on impro-ving water quality;The amount of pollutant degradation is highly positively correlated with the background concentration of pollutants under the three ecological treatment modes,and the degradation rate is generally correlated with the back-ground concentration of pollutants;The larger the recharge flow is,the more prominent the effect of pollutant degrada-tion is,and the lower the contribution of unit recharge flow to the degradation of pollutants is;The best water quality im-provement effect was achieved when the supplementary water flow accounted for about 10%of the background flow.The research results can provide reference for ecological management of rural rivers.
rural riversecological managementMIKE11water quality improvementecological water replenishment
万方数据
维普
