Schemes for Smooth Flow and Active Water in Plain River Network Polder Areas Considering Hydrodynamic Conditions and Water System Connectivity
Taking Xincheng Town of Jiaxing City as an example,the improvement effect of different free-flowing wa-ter schemes on river water quality was studied in view of insufficient hydrodynamic conditions in plain river network area.The MIKE11 coupling model of hydrodynamics and water quality was constructed to analyze the driving response rule of"water diversion/water system connectivity-water quality".Using NH3-N concentration as the main indicator,this paper analyzes the water quality improvement effects of different active water schemes and proposes optimized regulation schemes.The results show that centralized water diversion has little effect on regional water quality improvement,and dispersing multiple water diversion points can obviously improve water quality.The reduction rate of pollutants is be-tween 8%and 30%,and the water quality improvement effect is obvious.Reasonable water system connection project can further increase the water quality improvement effect of open flow scheme.
plain river networkhydrodynamic water quality coupling modelMIKE11optimal regulation plan
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维普
