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为了提高饮用水水质,将气浮、生物陶粒与膜进行有机组合,开发出“气浮-生物陶粒-膜”一体化工艺。采用该工艺处理高藻、低浊、有机物浓度较高的微污染湖水,对其运行特性进行研究。实验结果表明,该工艺对有机物和藻类均具有良好的去除效果,对浊度、色度、COD、氨氮、叶绿素a的平均去除率分别为97.6%、80.6%、69.6%、64.1%和94.4%。另外,该工艺表现出了良好的抗膜污染能力。实验开始时,跨膜压差约为2.2 k Pa;当实验运行至100 d时,跨膜压差仅为4.1 kPa。
In order to improve the quality of drinking water, flotation, bio-ceramic and organic combination of membrane to develop “flotation - biological ceramic - membrane ” integration process. The process was used to deal with the micro-polluted lake with high algae, low turbidity and high concentration of organic matter, and its operating characteristics were studied. The experimental results show that the process has good removal efficiency for organic matter and algae, and the average removal rates of turbidity, color, COD, ammonia nitrogen and chlorophyll a are 97.6%, 80.6%, 69.6%, 64.1% and 94.4% respectively, . In addition, the process shows good resistance to membrane fouling. At the beginning of the experiment, the transmembrane pressure difference was about 2.2 kPa. When the experiment ran to 100 days, the transmembrane pressure drop was only 4.1 kPa.