长期以来，从饮用水中去除腐殖物质/天然有机物（NOM）的有效方法一直可用。然而，为了提高成品水的质量和稳定性，降低生产饮用水的一般成本，需要更多信息。“NOM类型”背后的想法是，假设淡水中的NOM可分为具有相似物理/化学/生物性质的组。本研究的目的是证明，处理方法Y可以最有效地去除含有X组NOM的原水。 大多数用于描述NOM性质和成分的方法都基于预浓缩。一般来说，在NOM分析之前对样品进行预处理会影响结果。这对于实验室间的合作非常重要，而实验室间的合作是NOM项目类型的基础。这些样品都是由同一批人以同样的方式浓缩的。这种基本的预处理也适用于样品的分布。

Efficient methods for removal of humic substances/natural organic matter (NOM) from drinking water have been available for a long time. However, in order to improve the quality and stability of the finished water and reduce the general costs of producing drinking water, there is a need for more information. The idea behind the "typing of NOM" is the assumption that NOM in fresh water may be divided into groups that have similar physical/chemical/biological properties. The purpose of this research is to demonstrate that raw water containing NOM belonging to Group X, will be most efficiently removed by Treatment Method Y. Most methods used for describing the properties and composition of NOM are based on a pre-concentration. In general, the pretreatment of samples prior to NOM analysis will effect the results. This is important in relation to inter laboratory cooperation, which is the base for the typing of NOM project. The samples are all concentrated in the same way and by the same crew. This basic pretreatment is also practical for the distribution of the samples.