AHP法确定化工过程的环境影响评价指数——环境损耗指数

Determination of Environmental Impact Assessment Index of Chemical Processes by Using AHP:Environmental Depletion Index

采用层次分析法 ( AHP)作为环境影响权衡方法 ,开发了一种新的化工流程环境影响评价指数——环境损耗指数 ( EDI)。不同流程方案的环境损耗指数 ,可作为评价流程环境影响的指标 ,指数的相对大小能够较客观、真实地反映流程环境友好的程度。同时 ,以实际案例研究了废气溶剂回收系统的各种方案 ,并根据 EDI的大小筛选出了最优的流程。结果表明 :这种算法简便、可靠、实用 ,是一种有效的工程决策方法 ,有利于减少主观片面因素的影响。

By using Analytical Hierarchy Process methodology(AHP),a new chemical processe assessment index:Environmental Depletion Index(EDI) was studied.Different alternatives of EDI are calculated and are used as the basis of assessment on environmental impact of chemical processes. The EDI can reflect environmental friendly degree of process.As an example,various alternatives of solvent recovery system are discussed and the optimal process is selected based on EDI analysis.