厌氧消化产甲烷量关键参数修正及碳排放计算  

Correction of Key Parameters for Methane Production and Calculation of Carbon Emission in Anaerobic Digestion

作　　者：唐婧[1] 杨佳豪 李威潭 孟子棋 林治宏 TANG Jing;YANG Jia-hao;LI Wei-tan;MENG Zi-qi;LIN Zhi-hong(School of Municipal and Environmental Engineering,Shenyang Jianzhu University,Shenyang 110168,China)

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168

出　　处：《中国给水排水》2024年第21期95-101,共7页China Water & Wastewater

基　　金：辽宁省教育厅重点攻关项目(LJKZZ20220081)。

摘　　要：根据北方地区某处理量为40×10^(4)m^(3)/d的市政污水处理厂实际运行数据,对Sotemann污泥厌氧消化稳态模型污泥中的不可生物降解COD组分(fPS’up)进行实测修正,获得修正的fPS’up=0.42,将其应用于污泥厌氧消化稳态模型进而预测污水厂污泥厌氧消化工艺的甲烷产量。在浓缩池出泥量为1 240m^(3)/d的条件下,甲烷产量可达14 248m^(3)/d。采用情景分析法对沼气发电和沼气锅炉两种利用情景进行对比,有余热回收的沼气发电系统碳补偿量为73 929 kg/d(以CO_(2)计),比沼气锅炉增加73%。Utilizing the operational data from a municipal wastewater treatment plant in northern China,with a capacity of 40×10^(4)m^(3)/d,the non-biodegradable COD component(fPS’up)in the sludge was measured and corrected based on Sotemann sludge anaerobic digestion steady-state model,resulting in a revised value of 0.42.This methodology was subsequently applied to the sludge anaerobic digestion steady-state model to predict methane production during the anaerobic digestion process in the wastewater treatment plant.When the treatment capacity of the thickening tank reached 1240m^(3)/d,the methane production could attain 14248m^(3)/d.A scenario analysis was conducted to evaluate two utilization options:biogas power generation and biogas boiler systems.The carbon offset of the biogas power generation system with waste heat recovery was calculated at 73929 kg/d(calculated in terms of CO_(2)),which represented a 73%increase compared to that of the biogas boiler.

关 键 词：厌氧消化模型 参数修正 甲烷预测产量 沼气发电 沼气锅炉 

分 类 号：TU992[建筑科学—市政工程]