好氧修复下填埋场稳定化综合评价方法及其应用  

A comprehensive evaluation method for landfill stabilization under aeration and its application

作　　者：郑奇腾 吴少杰 冯世进[1,2] 陈宏信 赵勇 ZHENG Qiteng;WU Shaojie;FENG Shijin;CHEN Hongxin;ZHAO Yong(Department of Geotechnical Engineering,College of Civil Engineering,Tongji University,Shanghai 200092,China;Key Laboratory of Geotechnical and Underground Engineering,Ministry of Education,Shanghai 200092,China)

机构地区：[1]同济大学土木工程学院地下建筑与工程系,上海200092 [2]岩土及地下工程教育部重点实验室,上海200092

出　　处：《岩土工程学报》2024年第4期890-897,共8页Chinese Journal of Geotechnical Engineering

基　　金：国家自然科学基金重点项目(41931289);国家自然科学基金青年科学基金项目(41572265);国家杰出青年基金项目(41725012)。

摘　　要：好氧修复技术具有加速填埋堆体稳定化的优势,正确评估其稳定化进程对好氧修复系统的设计和运营具有重要的意义,但是现有指标数量众多且差异化大。考虑稳定化指标的敏感性和工程监测的难易程度,从稳定化机理出发,分别从气相、液相、固相和沉降4个层面筛选氧气利用率、归一化有机溶质指标、脱氮效率、生物降解度和相对沉降速率为评价指标,并将其统一划分为具有不同稳定化特征的3个阶段(好氧转化、半稳定化和后稳定化),提出指标权重和阶段划分标准。然后,构建了不同阶段中不同指标的隶属度函数,结合模糊综合评价理论实现对填埋场稳定化进程的综合性评价,并将其应用于某好氧修复工程案例。The in-situ aeration technology has advantages in accelerating landfill stabilization.A clear understanding of the evaluation of landfill stabilization under aeration is significant to the design and operation of an aeration system.However,the existing indices are numerous and varied.Considering the sensitivity to reflect the stabilization process and the accessibility to be monitored,five indices,oxygen utilization rate,normalized BOD/COD,nitrogen removal efficiency,biodegradation degree,and relative settlement rate,are selected to indicate the landfill stabilization from the perspective of gas,liquid and solid phases,respectively.Given the results of numerical simulations,the stabilization process of landfill under aeration can be divided into three phases:aerobic transformation,semi-stabilization and post-stabilization.After obtaining the corresponding weights of five indices,the membership functions of five indices in three stabilization phases are developed.Using the fuzzy theory,the evaluation method for landfill stabilization is established and applied to an in-situ landfill aeration case.

关 键 词：好氧修复 填埋场 稳定化阶段 评价指标 综合评价 

分 类 号：TU43[建筑科学—岩土工程]