厨余垃圾与剩余污泥厌氧共消化效能及潜在应用:以武汉为例  

Performance and Implications of Anaerobic Co-digestion of Food Waste and Waste Activated Sludge: A Case Study in Wuhan

作　　者：杨思 范晓志 罗希 刘正 苗雨[3] 吴晓晖[1] 昝飞翔 YANG Si;FAN Xiaozhi;LUO Xi;LIU Zheng;MIAO Yu;WU Xiaohui;ZAN Feixiang(School of Environmental Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;Changjiang Institute of Survey,Planning,Design and Research Co Ltd,Hubei Provincial Engineering Research Center for Comprehensive Water Environment Treatment in the Yangtze River Basin,Wuhan 430010,China;School of Civil and Hydraulic Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华中科技大学环境科学与工程学院,湖北武汉430074 [2]长江勘测规划设计研究有限责任公司湖北省长江流域水环境综合治理工程技术研究中心,湖北武汉430010 [3]华中科技大学土木与水利工程学院,湖北武汉430074

出　　处：《中国沼气》2023年第2期50-58,共9页China Biogas

基　　金：国家自然科学基金(52100145);中央高校基本科研业务费专项资金项目(2021XXJS041);国家重点研发计划:生活垃圾分质收运与减量提质系统优化与示范(2018YFC1902902)。

摘　　要：厌氧共消化是市政有机固废减量化资源化的主流工艺之一,然而湖北省武汉市仍缺乏具有本地代表性的厨余垃圾与剩余污泥厌氧共消化效能及潜在影响的相关研究。通过生化产甲烷潜力批式实验、动力学分析和共消化性能评估考察了武汉本地典型厨余垃圾和剩余污泥的比例对厌氧共消化效能和潜在应用的影响。研究结果表明:厨余垃圾与剩余污泥共消化的产甲烷速率比厨余垃圾单独消化提高了40%~96%;厨余垃圾与剩余污泥的最佳比例为2∶1(基于VS),此时实际产甲烷潜力为408 mLCH_(4)·g^(-1) VS added,比理论叠加值提高了11.2%;厌氧消化的渗透率达到60%时,武汉本地的厨余垃圾和剩余污泥通过厌氧消化回收的能量高达6100万m^(3)CH_(4)·a^(-1)或2亿kWh·a^(-1),可以供应约7.6%的居民生活天然气需求量或1.7%的电力需求量,可为武汉本地乃至全国的厨余垃圾和剩余污泥共消化提供参考和指导意义。Anaerobic co-digestion(AcoD)is one of the optimal processes for volume reduction and resource recovery of organic fraction of municipal solid waste,but relevant studies on the anaerobic co-digestion of adequately representative food waste(FW)and waste activated sludge(WAS)are rare.In this study,the effects of ratios of typical local FW and WAS on AcoD performance and potential implications in Wuhan were investigated via biochemical methane potential batch tests,kinetic analysis,and implications discussion.The results showed that the co-digestion of FW and WAS increased the methane production rate by 40%~96%compared to FW mono-digestion.The optimal ratio of FW∶WAS was 2∶1(based on VS),and the methane potential was 408 mL CH_(4)·g^(-1) VS added,11.2%higher than the theoretical stacked value.When the anaerobic digestion penetration rate reached 60%,the annual energy recovery of FW and WAS in Wuhan was 61 million m^(3) CH_(4) or 200 million kWh·a^(-1),which could supply about 7.6%of the residential natural gas demand or 1.7%of the electricity demand.This study could provide guidance and reference significance for the co-digestion of FW and WAS in Wuhan and even nationwide.

关 键 词：厨余垃圾 剩余污泥 厌氧共消化 甲烷 热电联产 

分 类 号：S216.4[农业科学—农业机械化工程] X703[农业科学—农业工程] X705[环境科学与工程—环境工程]