两种供能方式对厨余垃圾好氧堆肥的影响研究

EFFECT OF TWO METHODS OF ENERGY SUPPLY ON AEROBIC COMPOSTING OF THE KITCHEN GARBAGE

为了探索厨余垃圾堆肥过程中物料保持高温的方式,分别设置壁管式和水浴式供能好氧堆肥装置。实验结果表明:堆肥5 d后水浴式供能堆肥装置堆体内部的温度高于壁管式装置,且维持45℃以上范围长达8 d;两者堆肥周期都为13 d;实验结束时,水浴式供能堆肥装置内物料pH为8.7,高于壁管式装置的8.3。水浴式供能堆肥装置内物料的C/N值、BDM分别为9.2和18.1%,低于壁管式装置的9.2和30.0%。两种供能方式均能使厨余垃圾在极短时间内达到稳定化。

In order to study how to keep high temperature during aerobic composting of the kitchen garbage,two aerobic composting equipments with energy supply through water bath and tubes respectively were used in the experiment,whose interval was 13 d.Results showed the two equipments could keep temperature of garbage higher than 45 ℃ for 8 d and the temperature in equipment with water bath was always higher than that in equipment with tubes after 5 d.When the experiment was finished,C/N,BDM and pH of the inner meterial in the equipment with water bath were 9.2,18.1% and 8.7;C/N,BDM and pH of the material in the equipment with tubes were 9.2,30% and 8.3.Therefore,the two equipments could make kitchen garbage reach stabilization in very short time.