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Delft-3D模型可以很好地模拟水域的水动力和一系列物理化学生物过程所造成的水质变化,运用该模型对黑龙江省的重要水源地———桃山水库的水动力和水质情况进行了模拟.结果表明:桃山水库水流流速较小,一般为10-3 m/s数量级,局部地方会出现回流环流现象.出现突发污染事故时,水库自上游至下游的空间分布上,溶解氧(DO)质量浓度由1.00mg/L升高至7.30mg/L,氨氮(NH3—N)质量浓度由0.20mg/L降低至0.11mg/L.时间分布上,自2010年5月模拟之日起4个月后,坝址处DO和氨氮质量浓度分别为7.50mg/L和0.12mg/L,达到了水源地供水水质标准.
The Delft-3D model can simulate the hydrodynamics of water area and the change of water quality caused by a series of physico-chemical biological processes well. The model is used to simulate the hydrodynamics and water quality of the Taoshan Reservoir, an important water source in Heilongjiang Province The results show that the flow velocity of flow in Taoshan Reservoir is relatively small, usually 10-3 m / s, and the phenomenon of backflow circulation appears in some places.In the case of sudden pollution accident, the spatial distribution of the dissolved oxygen (DO ) Concentration increased from 1.00mg / L to 7.30mg / L, NH3-N concentration decreased from 0.20mg / L to 0.11mg / L. On the time distribution, from the May 2010 simulation date 4 A month later, DO and ammonia nitrogen concentration at the dam site was 7.50mg / L and 0.12mg / L, respectively, reaching the water quality standard of water supply.