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为探讨水葫芦与猪粪在交替式好氧厌氧堆肥作用下CO2与NH3产生与释放特征,将水葫芦、猪粪与木屑以1.7:1.0:0.3(湿重比)的比例混合均匀,进行为期56 d交替式好氧厌氧堆肥化处理。结果表明,交替好氧厌氧条件下水葫芦与猪粪混合堆肥尾气中CO2浓度随堆肥进行先增加后缓慢减少,前14 d CO2释放量占该阶段总有机碳(TOC)减少量的92.75%。NH3的释放浓度随堆肥进行而逐渐降低,堆肥NH3释放浓度与温度变化具有明显相关性。NH3挥发是堆肥氮损失的主要根源,占堆肥过程前14 d总氮(TN)损失的73.79%。
In order to investigate the characteristics of CO2 and NH3 production and release under the combined aerobic and anaerobic composting of water hyacinth and pig manure, water hyacinth, pig manure and wood chips were uniformly mixed at a ratio of 1.7: 1.0: 0.3 (wet weight ratio) Duration 56 d Alternating Aerobic Anaerobic Composting. The results showed that the CO2 concentration in the tail gas of mixed water hyacinth and pig manure alternated slowly with the increase of composting under alternate aerobic and anaerobic conditions, and the CO2 emission in the first 14 days accounted for 92.75% of the total organic carbon (TOC) decrease in this stage. The release concentration of NH3 gradually decreased with the composting, and the release concentration of NH3 in composting was significantly correlated with the temperature. NH3 volatilization is the main source of nitrogen loss in composting, accounting for 73.79% of the total nitrogen (TN) loss in the first 14 days of composting.