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餐厨垃圾高温厌氧消化

Keywords: 餐厨垃圾,高温厌氧消化,有机负荷,氨氮

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Abstract:

在中试规模下,研究餐厨垃圾高温厌氧消化试验,通过监测餐厨垃圾厌氧消化过程中产气量、气体组成等产气情况和消化液中pH值、SCOD、NH4+-N、VFAs等化学指标含量变化,确定餐厨垃圾厌氧消化的最大有机负荷,并分析餐厨垃圾高温厌氧消化技术的可行性,结果表明,在工程上餐厨垃圾单独进行高温厌氧消化产甲烷具有技术可行性,但难以保证系统长时间安全稳定运行;餐厨垃圾厌氧消化正常运行时最大有机负荷可达2.551kgVS/(m3·d);当系统有机负荷为2.551kgVS/(m3·d)时,每天每千克VS最高可产生甲烷量0.622m3;氨氮对餐厨垃圾厌氧消化产甲烷影响明显;餐厨垃圾中固有Na+含量对厌氧消化产甲烷影响不明显。

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