一项中试研究了溶解气浮（DAF）作为中空纤维微滤（MF）预处理的应用。结果表明，DAF预处理给水的MF运行时间比原给水长。在流量为70、90、110和135 gfd（120、155、190和230 L/m2/h）的情况下，比较了采用DAF预处理水的MF性能。性能结果表明，在70和90 gfd的流量条件下，MF运行长度可以达到30天以上，在110和135 gfd的流量条件下，运行长度可以达到21和10天。该中试研究的实验结果也使用数学模型进行了解释，以确定不同流量条件下的MF反洗效率。实验和模拟结果均表明，与未经处理的给水相比，经DAF预处理的水造成的膜污染具有孔隙堵塞减少和滤饼压缩性降低的特点。包括26个参考文献、表格和图表。

A pilot study investigated the use of dissolved air flotation (DAF) as a pretreatment to hollow-fiber microfiltration (MF). Results showed that DAF pretreated feedwater achieved longer MF runs than raw feedwater. MF performances with DAF pretreated water were compared for fluxes of 70, 90, 110 and 135 gfd (120, 155, 190, and 230 L/m2/h). Performance results indicated that MF run lengths of more than 30 days could be achieved at flux conditions of 70 and 90 gfd, with run lengths of 21 and 10 days for fluxes of 110 and 135 gfd. Experimental results from this pilot study were also interpreted using a mathematical model to determine MF backwash efficiency at the different flux conditions. Both the experimental and modeling results suggest that membrane fouling by the DAF pretreated water was characterized by reduced pore blockage and lower cake compressibility as compared with treatment of raw feedwater. Includes 26 references, tables, figures.