某BAF污水处理厂的数据统计分析及运行建议

Data Statistical Analysis and Operating Suggestion of a Wastewater Treatment Plant using BAF Process

采用平均值法和累积频率法对某曝气生物滤池(BAF)污水处理厂的COD、SS、氨氮和总氮运行数据进行了分析比较,以考察BAF运行的高效性和稳定性。结果表明,当数据波动性较小时,平均值法和累积频率法均可较为合理地反映BAF的处理能力,平均值法数据处理较累积频率法方便易行;但当数据波动性较大时,累积频率统计方法则能更好地反映BAF的处理能力和处理效果。综合运行数据和实际经验,对BAF运行时存在的主要问题进行了总结,并从强化BAF预处理、优化BAF反冲洗和提升运行效果等方面提出了相应的运行建议。

In order to evaluate the efficiency and stabilization of the biological aerated filter （BAF） process, the operation data of a wastewater treatment plant using BAF process, including COD, SS, ammonia nitrogen and total nitrogen, were analyzed through the average value method and the cumulative frequency method respectively. The results showed that, when the data were less fluctuated, both the average value method and the cumulative frequency method were suitable for analyzing the operation results of BAF process, and the average value method was more convenient and feasible. On the contrary, the cumulative frequency method was much better in reflecting the capacity and efficiency of BAF process when the data were more fluctuated. Based on the data analysis and practical experience, some operating suggestions of BAF were given on enhancing pretreatment, optimizing back-flushing and improving treatment effects, etc.