阐述了粗石英砂气水同时冲洗滤池，在污水深度处理中的适用性。
This paper expounds the adaptibility of coarse sand filter with simultaneous air and water backwash to tertiary filtration plant.
目的了解生物滤池结合臭氧消毒技术对生活污水的净化效果。
Objective To learn effect of purification of wastewater by biological filtration and ozone disinfection.
试验结果表明，两级曝气生物滤池对生活污水具有良好的净化性能。
The experimental results show that the performance of two-stage BAF for sewage treatment is excellent.
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