Simulation Research on Water Quality Attainment at Control Sections of Qinhuai River Basin Based on MIKE 11 Model
Taking the key sections in Outer Qinhuai River as the research objects,this paper constructed a one-dimensional mathematical model(MIKE 11)for water environment of Qinhuai River to simulate the effects of various water diversion conditions and pollution reduction projects on water quality improvement under differ-ent hydrological and meteorological conditions.The results showed that when the quality of the upstream water was in Class Ⅲ level,to ensure that the water quality at the sections met the standard requirements,the pollution reduction must be ≥ 50％during flood season,while in non-flood season,the pollution reduction must be ≥ 50％or the water diversion from Qinhuai New River must be ≥ 15 m3/s.When the accumulated frequen-cy of rainfall was 90％,the projects of reducing regional pollution by ≥ 50％,or diverting water from Qinhuai New River by ≥30 m3/s,or the combination of diverting water by≥15 m3/s and reducing pollution by≥25％could ensure that the water quality in the sections met the standard requirements.When the upstream wa-ter maintained as it was,in non-flood season,it was necessary to increase the regional pollution reduction rate or the water diversion from Qinhuai New River to ensure that the water quality in the sections met the standard re-quirements.
MIKE 11 modelPollution controlWater quality attainmentQinhuai River basin
万方数据
维普
