【摘要】 针对餐厨沼液高氨氮、低C/N的特点，采用“微氧曝气-一段式厌氧氨氧化-BioClens反硝化”工艺，进行了餐厨沼液脱氮除碳的小试研究。经150 d的运行优化，系统稳定后该工艺的耗氧有机物（以COD计）、TN平均去除率分别达到81.3%和81.8%。微氧曝气单元为厌氧氨氧化单元消除餐厨沼液中有机物的影响并保留NH₄+-N，其耗氧有机物（以COD计）及NH₄⁺-N去除率分别为81.6%和13.7%，为厌氧氨氧化稳定运行提供保障。厌氧氨氧化单元是NH₄⁺-N的主要去除单元，稳定后运行后总氮去除负荷为0.480 kg·（m³·d）^-1;BioClens反硝化单元对前两段工艺中产生的NO₃^--N进行反硝化深度去除，在以乙酸钠为碳源，包埋固定化填料填充比为5%、C/N=3的情况下，其平均NO₃^--N去除率达90%。该工艺实现了对餐厨沼液经济高效处理，具有应用潜力。更多还原

【Abstract】 According to the characteristics of high ammonia nitrogen and low C/N, a pilot study on nitrogen and carbon removal of food waste digestate was carried out by using the process of "micro oxygen aeration-one-stage anaerobic ammonia oxidation-BioClens denitrification. The results showed that the average removal rates of COD and TN reached 81.3% and 81.8% after 150 d of operation optimization. The micro oxygen aeration unit eliminated the effect of organic matter and retained NH₄⁺-N from the food waste digestate for the anaerobic ammonia oxidation unit, which removed 81.6% of COD and 13.7% of NH₄⁺-N and provided assurance for stable operation of anaerobic ammonia oxidation. The anaerobic ammonia oxidation unit was the main NH₄⁺-N removal unit and the average total nitrogen removal rate after stabilization was 0.480kgN·（m³·d）^-1. The BioClens denitrification unit removed the NO₃^--N generated in the first two stages of the process, and its average NO₃^--N removal rate reached 90% with sodium acetate as the carbon source and an encapsulated immobilized filler filling ratio of 5% and C/N=3. The process achieved an economical and efficient treatment of food waste digestate and will have broad application prospects.更多还原