This case study tested an approach for large-scale monetary valuation of water purification services based on spatially explicit, biophysical mapping of nitrogen retention in river networks. The study area for the case study was the Mediterranean bio-geographical region. The monetary value of nitrogen retention was assessed using replacement costs (RCs), based on the construction, operation and maintenance of constructed wetlands (CWs). The value of nitrogen retention by rivers in 2005 was estimated at €2167 km–1, on average. If the capacity or the potential of rivers and lakes to retain nitrogen was considered, the monetary value was €35,000 km–1 on average, much higher than the effective retention. The coupling between a biophysical model simulating the transport and retention of nitrogen in the aquatic environment and monetary estimates of potential and realized nitrogen removal resulted in detailed spatial information of one of the benefits that are provided by rivers and streams.
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机译:(54)标题:废水净化厂和用于净化废水的方法(54)Bezeichnung:ABWASSERREINIGUNGSANLAGE SOWIE VERFAHREN ZUR ABWASSERREINIGUNG(57)摘要:本发明涉及一种具有(a)进气混合罐(3)的废水净化厂, b)具有第一和第二槽段的组合反应沉淀池(1、2),c)其中d)在进气混合槽(3)和第一槽段之间设置有第一连接点(11)(b) 1)在第一箱段(1)的下部箱区c2)中,第一泵(12)布置在第一连接点(i1)并可以被驱动以输送来自第一箱段(1)的回流污泥(3),c3)在第一水箱部分(I)的上水箱区域k和d)上布置了一个第一澄清水排放点(13),其中di)一个第二连接点(在山高的下部储罐区中,在进气混合储罐(3)和第二储罐部分(2)之间布置有一个21)