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首页> 外文期刊>Lakes & Reservoirs >Framework for surface water quality management on a river basin scale: Case study of Lake Iseo, Northern Italy
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Framework for surface water quality management on a river basin scale: Case study of Lake Iseo, Northern Italy

机译：流域规模的地表水质量管理框架：以意大利北部伊塞奥湖为例

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River (DESERT) and lake (EVOLA) water quality models are used to simulate the influences of alternative water quality management scenarios on the quality of receiving surface waters in the Lake Iseo basin, Northern Italy. The scenarios are representative of the European Union Directive on Urban Waste Water Treatment (91/271/EEC) and of the regional authority’s objective to reduce the total phosphorus loads from point sources entering Lake Iseo and to restore the lake as close as it is practically possible to its former natural qualitative state. Application of DESERT shows that the regional ‘Water Clean Up Plan’ can achieve similar reductions in total phosphorus concentrations in the basin’s main river system, Oglio River, to the 91/271/EEC directive, but at notably lower economic costs. Application of EVOLA to Lake Iseo shows that it is not practical to achieve the regional authority’s objective of a specific total phosphorus concentration in the lake by 2016. Instead, the results show that a more realistic, but higher, total phosphorus concentration can be achieved by 2016. The results of both modelling exercises indicate the usefulness of DESERT and EVOLA for comparing and assessing water quality management scenarios and for revising the regional authority’s final objectives with regards to total phosphorus concentration in Lake Iseo, as well as the regional ‘Water Clean Up Plan’ for restoring and safeguarding the quality of the basin’s surface waters.
机译：河流（DESERT）和湖泊（EVOLA）水质模型用于模拟替代水质管理方案对意大利北部伊塞奥湖盆地接收地表水水质的影响。这些方案代表了欧盟城市污水处理指令（91/271 / EEC）的代表，并且代表了地区政府的目标，即减少来自进入伊塞奥湖的点源的总磷负荷，并使该湖尽可能接近恢复可能恢复到以前的自然定性状态。 DESERT的应用表明，与91/271 / EEC指令相比，该地区的“水净化计划”可以使流域主要河流Oglio河中的总磷浓度降低类似，但显着降低了经济成本。 EVOLA在伊塞奥湖上的应用表明，要在2016年之前实现区域当局特定的湖中总磷浓度的目标是不切实际的。相反，结果表明，通过以下方法可以实现更现实但更高的总磷浓度： 2016年。这两个模拟实验的结果表明，DESERT和EVOLA在比较和评估水质管理方案以及修订地区政府有关伊塞奥湖中总磷浓度的最终目标以及“地区水净化”方面的有用性《恢复和维护流域地表水质量的计划》。

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