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首页> 外文会议>NATO Advanced Research Workshop on Riverbank Filtration Hydrology; 200409; Bratislava(SK) >RIVERBANK FILTRATION IN THE NETHERLANDS: WELL FIELDS, CLOGGING AND GEOCHEMICAL REACTIONS
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RIVERBANK FILTRATION IN THE NETHERLANDS: WELL FIELDS, CLOGGING AND GEOCHEMICAL REACTIONS

机译：荷兰的河床过滤：井场，堵塞和地球化学反应

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摘要

River Bank Filtration (RBF) contributes ca. 7% (80 Mm~3/a) to the national drinking water supply in the Netherlands, through a total of 26 well fields. These RBF well fields are classified on the basis of (1) the main driving mechanism of flow (polder or pump driven); (2) RBF periodicity (flow direction temporarily reversing or not), (3) type of riverbed (sand or gravel), and (4) type of contact of river with aquifer (with or without intercalated aquitard(s)). Three case studies are reviewed which demonstrate the water quality, geochemical reactions and clogging phenomena in differing systems. The mass balance approach, also called 'reverse modeling', is applied to identify and quantify the extent of the most important hydrogeochemical reactions at the three case study sites. Clogging of the river bed seems to be a problem in the Netherlands only in RBF systems with a true gravel bed such as Roosteren along the Meuse River, and on sites where sludge is strongly accumulating due to structurally reduced river flows, as in the Hollandsch Diep estuary which was dammed in 1971 as part of the Delta Works.
机译：河岸过滤（RBF）贡献约。通过总计26口井田，荷兰的全国饮用水供应量达到7％（80 Mm〜3 / a）。这些RBF井田是基于以下几个方面进行分类的：（1）流动的主要驱动机制（pol子或泵驱动）； （2）RBF周期性（流动方向暂时反转或不反转），（3）河床类型（沙土或砾石），和（4）河流与蓄水层的接触类型（有或没有插层的水基石）。回顾了三个案例研究，这些案例表明了不同系统中的水质，地球化学反应和堵塞现象。质量平衡方法，也称为“逆向建模”，用于识别和量化三个案例研究地点最重要的水文地球化学反应的程度。在荷兰，仅在具有真正砾石床的RBF系统（例如，沿默兹河沿岸的Roosteren）以及由于河道流量减少而导致污泥大量积累的地点（如Hollandsch Diep）中，河床堵塞似乎才是问题。于1971年作为三角洲工程的一部分而修建的河口。

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