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基于厌氧氨氧化的城市污水处理厂能耗分析

Keywords: 厌氧氨氧化,城市污水,物质平衡,节能降耗

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Abstract:

基于小试和示范工程的试验研究结果,对基于一体化厌氧氨氧化工艺的城市污水处理厂进行了综合分析和评价.首先针对主要污染物质进行物质平衡分析,结果表明:与传统A2O城市污水处理工艺技术相比,基于厌氧氨氧化工艺的污水处理厂能在保证出水总氮达一级A排放标准的同时,有机物回收量增加1倍.进一步考察了厌氧氨氧化工艺对城市污水处理厂能耗的影响.曝气能耗的降低和厌氧消化工艺中甲烷产量的提高,使得城市污水处理厂的理论能量自给率达到90%.物质平衡分析和能耗分析表明:厌氧氨氧化工艺提高污水厂能量自给率的关键在于实现了污水中有机物和氮污染物去除的分离.

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