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ANALIZA UTJECAJA KVARA UREĐAJA ZA PROČIŠĆAVANJE NA KVALITETU VODE RIJEKE DRAVE

机译:处理设备故障对德拉瓦河水质的影响分析

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摘要

1D model of the Drava River, between 00 + 543 rkm and 69 +118 rkm, was created by the MIKE 11 river-modeling tool. The aim of this model was to analyze the river water quality (WQ). Compared to the real Drava River section, the model was simplified to exclude any tributaries for the purpose of the water quality analysis. The inflow boundary was specified upstream, in addition to the WQ parameters (dissolved oxygen (DO), temperature, ammonia nitrogen, nitrate nitrogen, total phosphorus and orthophosphate, and five-day biochemical oxygen demand (BOD5)). The water level and open boundary conditions were specified at the downstream end of section. The WQ parameters, mentioned earlier, were also defined at the Belišće wastewater treatment plant (WWTP) (54 + 373 rkm) and at the wastewater outlet near Osijek (14 + 580 rkm). The model was then used to simulate the effect on the WQ of the Drava River in a hypothetical extreme scenario: the 2-day failure of the Belišće WWTP. It was assumed that during this time untreated wastewater would be discharged into the river. After running the simulation, the resulting concentrations of DO, BOD5, and ammonia nitrogen were analyzed. The results showed that, according to the concentration values of the untreated wastewater, the concentrations of BOD5 and ammonia nitrogen rapidly increased and the DO concentrations rapidly decreased with the initiation of the WWTP failure. Immediately after the WWTP was repaired, the parameters returned to their pre-failure values. The resulting analysis of the effects of this scenario highlighted the self-purification ability of the Drava River.
机译:MIKE 11河流建模工具创建了Drava河的一维模型,介于00 + 543 rkm和69 +118 rkm之间。该模型的目的是分析河流水质(WQ)。与真实的德拉瓦河河段相比,该模型经过简化,以排除任何支流,以进行水质分析。除了WQ参数(溶解氧(DO),温度,氨氮,硝酸盐氮,总磷和正磷酸盐以及五天生化需氧量(BOD5))之外,还指定了上游流入边界。在该段的下游端指定了水位和开放边界条件。前面提到的WQ参数也在Belišće废水处理厂(WWTP)(54 + 373 rkm)和Osijek附近的废水出口(14 + 580 rkm)定义。然后,使用该模型来模拟一个假设的极端情况对德拉瓦河WQ的影响:Belišće污水处理厂的2天故障。假定在这段时间内未经处理的废水将排入河中。运行模拟后,分析所得的DO,BOD5和氨氮浓度。结果表明,根据未经处理的废水的浓度值,随着WWTP失效的开始,BOD5和氨氮的浓度迅速增加,而DO的浓度迅速降低。 WWTP修复后,参数立即恢复为故障前的值。对这种情况的影响进行的结果分析突出了德拉瓦河的自我净化能力。

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