潮汐对三亚河污染物排放的影响分析

Analysis on Influence of Tide on Pollutant Discharge in Sanya River

摘要:

潮汐式河道中污染组分复杂，污染物浓度受水位变化影响大。以三亚河为研究对象，针对其感潮河段的特征建立水动力水质耦合模型，研究潮汐对河道的影响。分析潮位顶托下和无潮位顶托下COD、NH3-N、TP等污染物的分布特征，为后续综合整治方案的指定提供依据。经分析，潮位顶托下的三亚河的COD、NH3-N和TP的总量与无潮位顶托时的比值分别是93%、115%和83%。潮汐对整年的污染物的释放影响较小。但是对东河污染物总量影响大于西河。

Abstract:

The pollution components in tidal rivers are complex, and the concentration of pollutants is greatly affected by changes in water level. Taking Sanya River as the research object, the hydrodynamic water quality coupling model is established according to the characteristics of its tidal reach to study the impact of tide on the river. The distribution characteristics of pollutants such as COD, NH3-N, TP, and other pollutants under and without tidal level support are analyzed, providing a basis for the designation of subsequent comprehensive treatment schemes. Through analysis, the total COD, NH3-N and TP of Sanya River under tide level support are 93%, 115% and 83% respectively when there is no tide level support. Tides have a relatively small impact on the release of pollutants throughout the year. However, the impact on the total amount of pollutants in the East River is greater than that in the West River.