苎麻麻骨掺杂餐厨垃圾堆肥腐化过程的动态监测

DYNAMIC MONITORING IN DECAY PROCESS OF KITCHEN WASTE COMPOSTING DOPING WITH RAMIE STALK

研究苎麻麻骨掺杂后餐厨垃圾堆肥的腐化规律和对养分保留能力,并以厨余垃圾单独堆肥作为CK,对堆肥过程堆体的温度、p H值、电导率(EC)、阳离子交换量、C/N,TN和TP进行动态监测,为探讨堆肥过程的物料转化机理提供前期参考。结果表明:与CK相比,苎麻麻骨掺杂对堆体p H具有一定的缓冲作用,温度变化更加频繁,提高了堆体的最高温度,降低了EC和CEC;苎麻麻骨的掺杂提高了堆体的C/N,较CK组堆体中的TN和TP含量分别提高了12.60%和85.37%。可见,向餐厨垃圾中掺杂苎麻麻骨有助于改善堆体的理化环境,且能保留养分,提高肥效。

In this study,experiments were designed to investigate the decay process and the nutrient retention capacity of kitchen waste composting doping with ramie stalk,the composting treatment without adding ramie stalk was used as the control. Temperature,p H,electrical conductivity（ EC）,cation exchange capacity（ CEC）,C/N,TN and TP of the pile body in the two treatments were dynamicaly monitored, the result could provide preliminary reference for investigating the transformation mechanism in composting process. The result showed that on physicochemical properties,after ramie stalk was added,the p H of the pile body were buffered,the temperature changed more frequently,both the EC and CEC were decreased. In the aspect of matrials,not only the C/N ratio raised,TP and TN of the pile body were also increased by 12. 60% and 85. 37%,respectively,compared with CK. In conclusion,it was helpful to immobilize fertilizer of the pile body as ramie stalk was added in kitchen waste,and the fertilizer efficiency of the waste composting were also improved.