生物可降解度判定生活垃圾堆肥处理的稳定性

准确判定城市生活垃圾（MSW）堆肥化处理的生物降解稳定性具有重要的环境、社会和经济意义，然而现有判定指标受垃圾组成不均匀性的影响，表现出一定的波动性。针对堆肥过程中微生物降解的主要对象——生物可降解物质进行研究，测定了接种1％高温菌、小风量连续通风静态好氧堆肥试验过程中生物可降解物质和有机质含量的变化。结果表明，堆肥过程中生物可降解度（BDM）受垃圾组分的影响较小，可较好地反映垃圾生物降解的规律，优于其他从有机成分变化角度判定MSW生物降解稳定性的指标。从动力学的角度，运用Matlab软件分段拟合出了整个堆肥过程中BDM变化曲线的表达式，验证了两段拟舍的可行性。

Biologically Degradable Material for Stability Determination of Municipal Solid Waste Composting

Stability determination of municipal solid waste(MSW) composting is very important in environment,society and economy.However,present estimate indices are affected heavily by uneven waste component,and take on fluctuating.The main biodegradable materials in composting process were researched by simulating the biodegraded process using chemical method.The content of biologically degradable material(BDM) and organic matters in the static aerobic composting,with 1% thermophilic bacteria inoculated and small fluxes continuous aeration was determined.The results show that BDM is affected little by uneven waste component,and has good selectivity.Compared with other indices that determine the biodegration stability of MSW from the point of view of organic component change,BDM can better reflect the MSW biodegradable rules.From the point of view of kinetics,expressions of BDM's changing curve in the biodegradation of composting have been piecewise fitted using Matlab software,and its feasibility has been justified.