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首页> 外文期刊>Regional Environmental Change >Impact and cost of measures to reduce nutrient emissions from wastewater and storm water treatment in the German Elbe river basin
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Impact and cost of measures to reduce nutrient emissions from wastewater and storm water treatment in the German Elbe river basin

机译：减少德国易北河流域废水和雨水处理中养分排放的措施的影响和成本

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摘要

As a leading nutrient emitter, wastewater infrastructure harbors significant technical potentials to reduce the water-polluting emissions of phosphorus and nitrogen into the Elbe river basin. From the viewpoint of the central infrastructure, the effluent threshold value of urban wastewater treatment plants could be lowered further by advanced use of denitrification and membrane filtration, and storm water overflows of wastewater and contaminated rainwater from sewers could be treated in retention soil filters. In addition, small-scale wastewater treatment plants, infiltration and reducing or unsealing impervious surfaces could be used as decentralized elements of wastewater or storm water treatment. It can be shown that if the most advanced measures were applied in all wastewater-relevant areas, up to 60% of the phosphorus and 37% of the nitrogen emissions could be avoided. Alongside central wastewater treatment plants, small-scale treatment plants prove to be the most effective and cost-efficient option. To achieve an ecologically acceptable state of the Elbe, however, it may be necessary to employ more costly measures as well.
机译：作为主要的养分排放者，废水基础设施具有显着的技术潜力，可以减少易北河流域水和磷的污染排放。从中央基础设施的角度来看，可以通过进一步使用反硝化和膜过滤技术进一步降低城市污水处理厂的出水阈值，并可以在保留的土壤过滤器中处理废水的雨水溢流和下水道的污染雨水。此外，小型废水处理厂，渗透和减少或启封不透水的表面也可用作废水或雨水处理的分散元素。可以证明，如果在所有与废水有关的地区都采取最先进的措施，则可以避免多达60％的磷和37％的氮排放。除了中央污水处理厂，小型污水处理厂被证明是最有效，最具成本效益的选择。但是，为了实现易北河的生态学可接受状态，可能还需要采用更昂贵的措施。

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