粗滤慢滤工艺净水试验研究表明：长江原水在不加任何药剂的条件下，经总停留时间约１０ｈ的处理，出水水质可达到《生活饮用水卫生标准》（ＧＢ５７４９８５）。该工艺出水水质稳定，除污染能力优越；还具有设施简单、管理方便等优点，适合于我国乡村小水厂采用。 The coarse-filtration and slow-filtration process water purification test study shows that the Yangtze River raw water can reach the Hygienic Standard for Drinking Water (GB5749-85) after treatment with a total residence time of about 10 hours under the condition of no added medicament. The effluent water quality of the process is stable, and the pollution removal capability is superior; it also has the advantages of simple facilities, convenient management, and is suitable for adoption in small rural water plants in China.