基于主成分回归的老生活垃圾填埋场好氧修复过程碳减排核算模型  

A MODEL OF CARBON EMISSION REDUCTION CALCULATION FOR AEROBIC REMEDIATION PROCESS IN MSW LANDFILLS BASED ON PRINCIPAL COMPONENT ANALYSIS

作　　者：刘军 潘天骐 赵慧慧 郭燕 陈冠益 侯立安[1] LIU Jun;PAN Tianqi;ZHAO Huihui;GUO Yan;CHEN Guanyi;HOU Li'an(School of Environmental Science and Engineering,Tianjin University,Tianjin 300072,China;Nanjing Wondux Environmental Protection Technology Co.,Ltd.,Nanjing 211103,China;School of Mechanical Engineering,Tianjin University of Commerce,Tianjin 300134,China)

机构地区：[1]天津大学环境科学与工程学院,天津300072 [2]南京万德斯环保科技股份有限公司,南京211103 [3]天津商业大学机械工程学院,天津300134

出　　处：《环境工程》2023年第9期133-139,共7页Environmental Engineering

基　　金：水专项项目“京津冀地下水污染防治关键技术研究与工程示范项目”(2018ZX07109)。

摘　　要：老生活垃圾填埋场好氧修复技术因其对甲烷气体的削减,已逐渐在我国得到广泛应用,有望成为“双碳”目标背景下我国填埋场修复的重要技术手段。目前国内外常用的填埋场碳排放核算模型难以表征填埋场好氧修复过程的碳减排。以天津华明简易填埋场好氧修复项目作为研究对象,分析了其自2019年5月开始好氧修复工作300 d内的堆体工程力学特性、垃圾降解生化特性以及垃圾渗沥液生化特性等特征指标,得出2个特征指标主成分,并利用主成分建立堆体甲烷浓度回归模型。该模型可以分析和预测填埋场好氧修复过程中堆体内部甲烷气体浓度递减规律,进而可计算填埋场好氧修复相较于传统厌氧封场的甲烷削减量,为填埋场好氧修复碳减排核算提供理论依据,也可成为填埋场堆体稳定化状态的特征值甲烷浓度的判定参考。Aerobic remediation technology for old MSW landfills has been widely used in China due to its reduction performance on methane gas,and is expected as an important technical means of landfill remediation under the background of China's Dual Carbon Goals.The carbon emission accounting models commonly used at home and abroad are difficult to represent the carbon emission reduction of landfill aerobic remediation process.In this paper,the aerobic restoration project of Tianjin Huaming landfill was taken as the research object,and the engineering mechanical properties of the landfill,biochemical properties of waste degradation,and biochemical properties of landfill leachate were analyzed within 300 days of aerobic restoration work since May 2019.Two principal components were obtained,and a regression model of methane concentration in the landfill was established using the principal components analysis.This model can analyze and predict the decreasing law of methane gas concentration in landfill bodies during aerobic restoration,and then calculate the methane reduction of landfill aerobic restoration compared with the traditional anaerobic sealing field.It provides a theoretical basis for the calculation of carbon emission reduction of landfill aerobic restoration,and can be applied to judge aerobic restoration process when landfill showes the characteristic value of methane concentration stabilization.

关 键 词：主成分回归 垃圾填埋场 好氧修复 碳减排 

分 类 号：X799.3[环境科学与工程—环境工程]