北京高安屯餐厨协同污泥厌氧消化生产性试验  

Productive Experiment of Kitchen Waste and Municipal Sludge Anaerobic Co-digestion in Beijing Gao’antun Sludge Treatment Center

作　　者：宋晓雅[1] 张建新[1] 张荣兵[1] 石磊[1] 葛勇涛[1] 宗倪 陈靖轩[1] 李晓晓 SONG Xiao-ya;ZHANG Jian-xin;ZHANG Rong-bing;SHI Lei;GE Yong-tao;ZONG Ni;CHEN Jing-xuan;LI Xiao-xiao(Beijing Drainage Group Co.Ltd.,Beijing 100044,China)

机构地区：[1]北京城市排水集团有限责任公司,北京100044

出　　处：《中国给水排水》2024年第4期99-106,共8页China Water & Wastewater

摘　　要：餐厨与污泥同属城市有机废弃物,均采用厌氧消化作为重要手段来实现资源化、减量化和稳定化。将两者协同处置,理论上可避免餐厨单独厌氧消化易酸化、污泥单独消化产气率低等问题。利用北京高安屯污泥处理中心现况污泥处理设施,开展大型生产性试验,将预处理后的餐厨浆料与污泥实施联合中温厌氧消化以验证协同处置实际效果。试验期间,协同系统稳定,协同处置效应明显,实际产气量与理论产气量基本吻合。消化池中酸碱比低于0.12,氨氮含量低于4 000 mg/L。消化池有机负荷峰值为3.399 kgVS/(m^(3)·d)、有机物分解率平均为63.59%、分解单位有机物产气率平均为1.41 m^(3)/kgVS、单位干固体沼气产量平均为571 m^(3)/tDS,较单独污泥厌氧消化时分别提升2.7%、15.2%、5.2%和31%。但需注意,随着餐厨浆料比例的增加,沼气中甲烷含量略有降低。此外,还针对协同处置消化系统的进排泥操作提出了优化措施。Both kitchen waste and municipal sludge are municipal organic wastes,and anaerobic digestion is used as an important means to achieve resource utilization,reduction and stabilization.The co-digestion of the two can theoretically avoid the problems of easy acidification of kitchen waste anaerobic digestion alone and low gas production rate of sludge digestion alone.Using the current sludge treatment facilities of Beijing Gao'antun sludge treatment center,a large-scale productive experiment was carried out to verify the actual effect of co-processing by combined mesophilic anaerobic digestion of pretreated kitchen slurry and municipal sludge.During the experiment,the synergistic system was stable with obvious disposal effect.The actual gas production was basically consistent with the theoretical gas production.The acid-base ratio in the digestion tank was lower than O.12,and the ammonia nitrogen content was lower than 4000 mg/L.The peak organic load of digestion tank was 3.399 kgVS/(m.d),the average decomposition rate of organic mater was 63.59%,the average unit organic matter gas production rate was 1.41 m'/kgVS,and the average dry solid biogas yield was 571 m/tDS,which was 2.7%,15.2%,5.2% and 31% higher than that of sludge anaerobic digestion alone.However,it should be noted that with the increase of the kitchen waste proportion,the methane content in biogas decreased slightly.In addition,

关 键 词：餐厨 协同效应 污泥 厌氧消化 生产性试验 

分 类 号：TU992[建筑科学—市政工程]