Application Research of the System Dynamics Method on Water Pollution System in Xuchang City

Based on system analysis method,the model of water pollution control system in Xuchang City was constructed by the tool of system dynamics in this paper.Including zero scheme,7 kinds of scheme were designed,pollutant emissions and the degree of water pollution in different scheme was analyzed.Combined with water quality model,the river water quality status in optimization scheme was simulated quantitatively.A pollutant emissions-river water quality linkage relationship was established.It lays a foundation for decision-making of the local environmental protection managers,and provides research thought of water pollution control and water quality improvement for other regions.