武夷山市生活垃圾处理能值分析

The Emergy Analysis of Wuyishan city's Municipal Solid Waste Treatment

对武夷山市规划新建的生活垃圾处理工程,利用能值方法分析填埋-沼气处理工艺,通过绘制能值系统图辨析该系统的能值投入和产出。按照自然/社会、可再生/不可再生的标准将能值投入分成四类并列表计算能值指标:环境负载率(EIR)和能值产出率(EYR)。能值指标表明:在目前情况下,填埋—沼气处理方式对环境压力小,“投入/产出”比高,是一种科学合理的处理方式。但是通过分析规划年限内能值指标的变化趋势发现该系统对环境的压力将逐步扩大,系统对外界的能值产出也会降低,这对未来城市发展留下了环境问题隐患。

The article uses the method of emergy for analyzing the landfill - methane treatment method of the new municipal solid waste treatment project of Wuyishan City. According to the nature/society and recyclable/non - recyclable standards, the in- put of emergy was divided into 4 categories, and the indexes of emergy ——environment load rate （ELR） and the Emergy yield rate （EYR）—— were calculated. The indexes of emergy show that in the current situation, the landfill - methane treatment has little pressure on the environment with high cost -yielding rate, which is a reasonable treatment method. However, the changing trend of emergy in the coming years shows that with the increasing pressure of the system to the outside environment, the yielding of emergy from the system will decrease, which leaves a hidden problem for the future city development.