The paper taking sewage treatment technology of Lingshi county sewage treatment plant as an example brifly descirbed the principle,characteristics and existing problems of A2/O process and BAF process.The author discussed its sewage treatment processes,hoping to have some help for the sewage treatment plant.%以灵石县污水处理厂污水处理工艺为例,分析了A2/O工艺和BAF工艺原理、特点及存在的问题,为一些污水处理厂污水处理工艺的选择提供参考。
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