Water supply companies with reservoirs in peatland areas need to know how land use and vegetation cover in their supply catchments impact the amount and composition of aquatic organic matter in raw waters. Drinking water treatment processes remove organic matter from potable supplies, but recent increases in concentration and changes in composition have made this more difficult. This study analysed the composition of aquatic organic matter from peatland catchments in the UK and Faroe Islands. Both dissolved organic matter (DOM) and particulate organic matter (POM) compositions varied spatially, but these differences were not consistent as water moved through catchments, from headwaters and peatland pools to lake and reservoir outlets. These data showed that lakes and reservoirs are acting as flocculation hotspots, processing OM, releasing carbon (C), hydrogen (H) and oxygen (O) compounds to the atmosphere, and resulting in OM with higher N content. DOM compositions could be grouped into five clusters, showing that water treatment processes can be maximised to target ‘envelopes’ or clusters of DOM compositions. Catchment factors such as land use, vegetation cover, percentage peat cover and catchment area are good indicators of OM compositions likely to be present in a reservoir, and can guide water companies to maximise efficiency of their raw water treatment processes.

中文翻译：

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成分簇：英国和法罗泥炭地水生有机质的元素含量


在泥炭地地区拥有水库的供水公司需要了解其供水集水区的土地利用和植被覆盖如何影响原水中水生有机物的数量和成分。饮用水处理过程可去除饮用水中的有机物，但最近浓度的增加和成分的变化使这变得更加困难。这项研究分析了英国和法罗群岛泥炭地流域的水生有机物的成分。溶解有机物（DOM）和颗粒有机物（POM）组成在空间上有所不同，但当水流经集水区（从水源和泥炭地水池到湖泊和水库出水口）时，这些差异并不一致。这些数据表明，湖泊和水库充当絮凝热点，处理有机肥，向大气中释放碳（C）、氢（H）和氧（O）化合物，并导致有机肥中氮含量较高。 DOM 成分可以分为五个簇，这表明水处理过程可以最大化以达到目标“包络线”或 DOM 成分簇。土地利用、植被覆盖、泥炭覆盖百分比和集水面积等流域因素是水库中可能存在的有机质成分的良好指标，可以指导自来水公司最大限度地提高原水处理过程的效率。