【摘要】 针对生产实践中,餐厨垃圾快速生物干化存在辅料供应量不足、处理周期较长等问题,基于外源辅助加热的生物干化系统,通过连续运行10 d,分析不同比例(0%、5%、10%、15%、20%、25%、30%和35%,分别记为T0-25、T5-20、T10-15、T15-10、T20-5、T25-0、T30-0、T35-0)回料替代辅料的餐厨垃圾生物干化效率及能耗。结果表明:不同比例回料替代辅料均可以促进餐厨垃圾堆体升温,达到物料快速生物干化;在生物干化过程中,30%和35%回料替代辅料的餐厨垃圾生物干化处理脱水效果最好,第4 d的含水率较无回料添加的对照组分别低19.09%、18.21%。但随着回料添加量的增加,单位质量餐厨垃圾水分去除能耗整体呈现升高趋势,添加10%回料(T10-15)替代辅料的生物干化处理组单位质量干化所需能耗最低(1.34 kW·h),与无回料添加(T0-25)的对照组(1.26 kW·h)能耗最为接近。因此,在餐厨垃圾快速干化处理实践中,若锯末等辅料供应量不足,可以考虑采用添加10%回料代替辅料对餐厨垃圾进行生物干化。更多还原

【Abstract】 In view of the problems of insufficient supply of auxiliary materials, long treatment period in the production practice of kitchen waste bio-drying, the bio-drying efficiency and energy consumption of food waste with different proportion of recycled materials(0%, 5%, 10%, 15%, 20%, 25%, 30%, 35% signed T0-25, T5-20, T10-15, T15-10, T20-5, T25-0, T30-0, T35-0 respectively) instead of auxiliary materials through continuous operation for 10 days based on the bio-drying system of exogenous auxiliary heating were analyzed. The results show that the pile’s temperature is promoted and the moisture is removed with adding recycled materials. The moisture content of T30-0 and T35-0 decrease to 26.05%, 26.93%, which are 19.09%, 18.21% lower than that of T0-25 on the 4 th day of bio-drying, respectively. The energy consumption of unit water removal will be increased with the increase of the amount of recycled materials. The energy consumption of unit water removal of T10-15(1.34 kW·h) which is the closest to that of the control group T0-25(1.26 kW·h). In the biological drying treatment point of kitchen waste, if the supply of auxiliary materials(sawdust) is insufficient, 10% recycled materials(T10-15) can be used for biological drying of kitchen waste.更多还原