剩余污泥与餐厨垃圾协同厌氧消化研究进展

为了推进污水厂剩余污泥与餐厨垃圾协同厌氧消化在工程规模中的应用,提高其能源回收率,系统分析了协同厌氧消化机制、产物类型及其主要的影响因子,综述了协同厌氧消化中直接种间电子传递作用的重要研究进展,并展望了协同厌氧消化的未来研究方向,包括开发高效经济的原料预处理方式,表征基质降解特性,基于多组学联用技术理解微生物代谢调控,缓解消化体系中潜在抑制剂影响,原位耦联其他种类废弃物进一步提升消化性能和稳定性,以期为城镇有机固体废弃物的高效能源回收提供指导.

Recent advances in anaerobic co-digestion of excess sludge and food waste

In order to promote the industrial-scale application of anaerobic co-digestion (AcoD) of sewage excess sludge (ES) with food waste (FW) and enhance its energy recovery efficiency, this study systematically summarized the mechanisms of AcoD process, the distribution of co-digestive products and the factors that may affect the AcoD performance, the important research advances of direct interspecific electron transfer in AcoD were then reviewed, followed by the novel perspectives of AcoD process were proposed, such as developing efficient and economic methods for feedstock pretreatment, characterizing substrates degradation, understanding metabolic regulation by omics technologies, mitigating the effect of potential inhibitors in the AcoD systems, and in-situ coupling with other wastes, to improve digestion performance and stability. This study may provide a guidance and reference for efficient energy recovery of urban organic solid wastes.