Vegetable waste (VW) is a potential organic fertilizer resource. As an important way to utilize vegetable wastes, aerobic composting of VW generally has the problems of long fermentation cycle and incomplete decomposition of materials. In this study, 0.3–1.2% of potassium persulfate (KPS) was added to promote the maturity of compost. The results showed that the addition of KPS promoted the degradation of materials, accelerated the temperature rise of compost. KPS also promoted the formation of humic substances (HS). Compared with the control, HS contents of treatments with KPS addition increased by 7.81 ~ 17.52%. Fourier transform infrared (FTIR) spectroscopy and scanning electron microscope (SEM) analysis reveal the mechanism of KPS affecting the composting process: KPS stimulated the degradation of various organic substances such as lignin at high temperature stage, and the degradation of lignin could accelerate the release and decomposition of other components; KPS made the structure of the material looser, with more voids and pores, and more specific surface area of the material, which was more suitable for microbial degradation activities. Therefore, the addition of KPS can promote the decomposition of organic matter in the early stage of composting, accelerate the process of thermophilic phase, and shorten the composting process and improve product maturity.

蔬菜废弃物（VW）是一种潜在的有机肥料资源。作为蔬菜废弃物利用的重要途径，大众好氧堆肥普遍存在发酵周期长、物料分解不完全的问题。在本研究中，添加0.3-1.2%的过硫酸钾（KPS）来促进堆肥的成熟。结果表明，KPS的添加促进了物料的降解，加速了堆肥的升温。 KPS还促进腐殖质(HS)的形成。与对照相比，添加KPS处理的HS含量增加了7.81～17.52%。傅里叶变换红外（FTIR）光谱和扫描电子显微镜（SEM）分析揭示了KPS影响堆肥过程的机制：KPS在高温阶段刺激木质素等多种有机物质的降解，木质素的降解可以加速释放以及其他成分的分解； KPS使材料的结构更加疏松，具有更多的空隙和孔隙，材料的比表面积更大，更适合微生物的降解活动。因此，添加KPS可以促进堆肥前期有机物的分解，加速高温阶段的进程，缩短堆肥过程，提高产品成熟度。