曝气间隔对猪粪堆肥过程中耗氧和 GHG 排放的影响。
Effect of aeration interval on oxygen consumption and GHG emission during pig manure composting.
机构信息
Laboratory of Biomass and Bioprocessing Engineering, College of Engineering, China Agricultural University, Beijing 100083, China.
School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, Shandong 255000, China.
出版信息
Bioresour Technol. 2018 Feb;250:214-220. doi: 10.1016/j.biortech.2017.11.010. Epub 2017 Nov 6.
To verify the optimal aeration interval for oxygen supply and consumption and investigate the effect of aeration interval on GHG emission, reactor-scale composting was conducted with different aeration intervals (0, 10, 30 and 50 min). Although O was sufficiently supplied during aeration period, it could be consumed to <10 vol% only when the aeration interval was 50 min, indicating that an aeration interval more than 50 min would be inadvisable. Compared to continuous aeration, reductions of the total CH and NO emissions as well as the total GHG emission equivalent by 22.26-61.36%, 8.24-49.80% and 12.36-53.20%, respectively, was achieved through intermittent aeration. Specifically, both the total CH and NO emissions as well as the total GHG emission equivalent were inversely proportional to the duration of aeration interval (R > 0.902), suggesting that lengthening the duration of aeration interval to some extent could effectively reduce GHG emission.
为了验证供氧和耗氧的最佳曝气间隔，并研究曝气间隔对温室气体排放的影响，采用不同的曝气间隔（0、10、30 和 50min）进行了反应堆规模的堆肥。尽管在曝气期间充分供应了 O，但仅当曝气间隔为 50min 时，O 才能被消耗到<10%vol 以下，这表明曝气间隔超过 50min 是不可取的。与连续曝气相比，间歇曝气可分别减少总 CH 和 NO 排放以及总 GHG 排放当量 22.26-61.36%、8.24-49.80%和 12.36-53.20%。具体而言，总 CH 和 NO 排放以及总 GHG 排放当量均与曝气间隔的持续时间呈反比（R>0.902），这表明在一定程度上延长曝气间隔的持续时间可以有效减少 GHG 排放。
Zotero 插件