本文评估了慢速砂滤器去除天然有机物（NOM）和有机前体材料的能力，通过溶解有机碳、紫外线吸收率和不同NOM水平源水中三卤甲烷形成潜力进行量化。对市政设施进行采样，以提供基线数据，并评估两种不同的过滤器清洗技术（正常刮洗和耙洗）对NOM和颗粒物去除的影响。进行了中试规模的过滤器研究，以评估两种不同流速对NOM去除、颗粒去除和过滤器生物量发展的影响。 包括47个参考文献、表格、图表。

This article evaluates the capacity of slow sand filters to remove natural organic matter (NOM) and organic precursor materials as quantified by dissolved organic carbon, UV absorbance, and trihalomethane formation potential from source waters with varying levels of NOM. Municipal facilities were sampled to provide baseline data and to evaluate the effects of two different filter cleaning techniques, normal scraping and harrowing, on NOM and particulate removal. Pilot-scale filter studies were conducted to evaluate the influence of two different flow rates on NOM removal, particulate removal, and filter biomass development. Includes 47 references, tables, figures.