深圳湾TIN和PO43--P数值模拟及减排效果分析

采用EFDC模型建立深圳湾三维水动力和营养盐模型,模拟总无机氮(TIN)和正磷酸盐(PO43--P)等主要营养盐在深圳湾不同水文条件下的输运规律.计算结果表明,TIN和PO43--P的计算值和实测多年月均值枯、丰水期都吻合较好.内陆河流TIN和PO43--P减排方案的计算表明,珠江口TIN提高至三类海水标准是深圳湾水体...

Simulation and Evaluation on TIN and PO3-4-P Reduction in Deep Bay, China

Environmental Fluid Dynamics Code (EFDC), three-dimensional hydrodynamic and water quality models, are employed to simulate the transport of total inorganic nitrogen (TIN) and orthophosphate (PO4(3-) -P) in Deep Bay, China under different hydrologic conditions. It shows that, the computational results of TIN and PO4(3-) -P match very well with monthly-averaged field data in dry and wet seasons. The results of TIN and PO4(3-) -P reduction scenarios show that, it is necessary to reduce TIN concentration in Pearl River to Grade III to guarantee TIN in Deep Bay comply with the marine functional zonation requirement of the standard of Grade III. TIN and PO4(3-) -P concentrations in Deep Bay could comply with the marine functional zonation requirement if 95% TIN and PO4(3-) -P loading are reduced from the inflow when degradation ignores. When the degradation is considered, TIN could comply with the marine functional zonation requirement if 83% TIN loading are reduced from the inflow.