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以珠江水源水为高速给水曝气生物滤池(high-rate UBAF)预处理中试试验对象,研究采用单孔膜曝气滤头曝气系统时,滤池于不同气水比工况下对珠江水源水的脱氮效果。结果表明:水温为30℃,水力停留时间为15 min,处理水量为64 m3.h-1,滤速为16 m.h-1时,随着气水体积比从0.1增加至0.7,DO浓度呈对数上升;当气水体积比大于0.5时,预处理出水NH4+-N质量浓度基本上小于0.5 mg·L-1,NO2--N小于0.110 mg·L-1。
Taking the Pearl River water as the high-rate UBAF pretreatment pilot project, the study on the aeration system using a single-hole membrane aeration filter was carried out. Pearl River water nitrogen removal effect. The results showed that when the water temperature was 30 ℃, the hydraulic retention time was 15 min, the treated water volume was 64 m3.h-1 and the filtration rate was 16 mh-1, the DO concentration was increased as the gas-water volume ratio increased from 0.1 to 0.7 When the volume ratio of gas to water was greater than 0.5, the mass concentration of NH4 + -N in the pretreated effluent was basically less than 0.5 mg · L-1 and NO2 - N was less than 0.110 mg · L-1.