Key Laboratory of Industrial Ecology and Environmental Engineering, School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China.
Key Laboratory of Industrial Ecology and Environmental Engineering, School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China.
Waste Manag. 2016 Oct;56:411-22. doi: 10.1016/j.wasman.2016.06.007. Epub 2016 Jun 17.
In this study, dewatered sludge (DS) and food waste (FW) were co-biodried by balancing substrate's property and microbial aspect. A series of experiments were conducted to explore the effects of mixing ratio, particle size of bulking agent, air-flow rate and initial moisture content (MC). A synergistic enhancement of co-biodrying of FW and DS was observed in terms of a stable temperature profile and long high-temperature duration. The biodrying index (water removal/VS consumption) indicated that the co-biodrying had a high efficiency for water removal with less organics consumption, especially for DS/FW=2/2. The small size (<3mm) of bulking agent and initial MC of 62.68% was preferable for the biodrying process by providing adequate free air space and extra carbon source. A moderate air-flow rate of 0.04m(3)h(-1)kg(-1) showed the best water carrying capacity. This finding suggests that the co-biodrying strategy could be a promising approach to treating different organic wastes with synergistic enhancement.
在这项研究中，通过平衡底物特性和微生物方面，对脱水污泥（DS）和食物垃圾（FW）进行共生物干化。进行了一系列实验，以探索混合比、膨松剂粒径、气流率和初始水分含量（MC）的影响。在稳定的温度曲线和长时间高温持续的情况下，FW 和 DS 的共生物干化表现出协同增强的效果。生物干化指数（水分去除/VS 消耗）表明，共生物干化具有高效的水分去除能力，有机物消耗较少，特别是对于 DS/FW=2/2 的情况。较小的膨松剂粒径（<3mm）和初始 MC 为 62.68% 更有利于生物干化过程，因为它提供了足够的自由空气空间和额外的碳源。适中的气流率 0.04m(3)h(-1)kg(-1) 显示出最佳的水携带能力。这一发现表明，共生物干化策略可能是一种很有前途的协同增强处理不同有机废物的方法。
