通过在纽约州340毫升/天（90mgd）的水处理厂进行分流操作，实现了直接过滤和常规处理的工厂规模比较。该研究调查了减少混凝剂使用带来的潜在经济性；减少污泥生产、处理和处置问题；以及减少人力需求。包括9个参考文献、表格、图表。

Plant-scale comparison of direct filtration and conventional treatment was achieved by a split stream operation at a 340 ml/day (90mgd) water treatment plant in the state of New York. The study investigated the potential economies resulting from decreased coagulant use; fewer sludge production, treatment, and disposal problems; and reduced manpower requirements. Includes 9 references, tables, figures.