College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China.
Bioresour Technol. 2021 Jan;320(Pt A):124357. doi: 10.1016/j.biortech.2020.124357. Epub 2020 Nov 2.
Industrial-scale composting of food waste (FW) was performed at different aeration frequencies (C_5_25: 5 min aeration + 25 min interval, C_10_20: 10 min aeration + 20 min interval, C_15_15: 15 min aeration + 15 min interval and CK: stuffiness) to ascertain the optimal aeration frequency to accomplish polymerization and humification of compost. The tested aeration frequencies affected the oxygen uptake rate, oxygen spatial distribution, and ultimately influenced the humification of compost. Extensive aeration was not beneficial to accumulate nitrogen and phosphorus during composting. Aeration frequency influenced the succession of bacterial community primarily through affecting O concentration and the release of various enzymes by these bacteria. Regulating O concentration by adjusting aeration strategies may provide guidance for accelerating maturity of composting. Considering various factors, this paper recommends the scheme of heating period (C_5_25), thermophilic period (C_15_15) and psychrophilic period (no aeration).
采用不同曝气频率（C_5_25：曝气 5 分钟+间隔 25 分钟、C_10_20：曝气 10 分钟+间隔 20 分钟、C_15_15：曝气 15 分钟+间隔 15 分钟和 CK：闷堆）对食品废物（FW）进行工业化堆肥，以确定最佳曝气频率以实现堆肥的聚合和腐殖化。测试的曝气频率影响需氧量、氧气空间分布，最终影响堆肥的腐殖化。在堆肥过程中，过度曝气不利于氮磷的积累。曝气频率主要通过影响 O 浓度和这些细菌释放的各种酶来影响细菌群落的演替。通过调整曝气策略来调节 O 浓度，可能为加速堆肥成熟提供指导。综合考虑各种因素，本文推荐加热期（C_5_25）、高温期（C_15_15）和低温期（不曝气）的方案。
