生活垃圾AAFEB工艺制取沼气试验  

Experimemtal Study on Biogas Production from Domestic Refuse by AAFEB Process

作　　者：梅翔[1] 何惠君[1] 

机构地区：[1]江苏工学院环境工程研究所,东南大学环境工程研究所

出　　处：《中国沼气》1994年第3期7-11,共5页China Biogas

摘　　要：用实验室规模厌氧附着膜膨胀床（ＡＡＦＥＢ）工艺对生活垃圾制取沼气研究的试验表明，生活垃圾分类收集、捣碎和稀酸水解等预处理工序后制成浆液，作为ＡＡＦＥＢ反应器的进料可以获得很高的运行效率，并回收沼气。采用４～５ｋｇＣＯＤ／（ｍ￣３·ｄ）的容积ＣＯＤ负荷较易启动反应器；在进料ＣＯＤ为２０００～２１０００ｍｇ／Ｌ的试验范围内，容积ＣＯＤ负荷宜控制在２０ｋｇＣＯＤ／（ｍ￣３·ｄ）以内，ＨＲＴ宜控制在１２ｈ以上，出水碱酸比（ＡＬＫ／ＶＦＡ）宜大于２．０；一吨有机垃圾可产沼气４１．４９ｍ￣３，沼气中甲烷含量高于５９％。在对ＡＡＦＥＢ反应器运行特点分析的基础上建立了其稳态运行的过程动力学模型，并用于过程运行性能预测和反应器的工艺设计等。A bench-scale anaerobic attached film expanded bed(AAFEB )process for biogas production fromdomestic refuse,wliich is separatly collected, milled and hydrolyzed wIth dilute acid,is investigated.perforn1al1ce of theAAFEB resctor fed with domestic refuse pretreatment liquid is evaluated for recovery of biogas. The reactor can be readilystarted up at a volulnetric COD loadig rates of 4～5kg COD/(m￣3·d);In the range of 2000～21000 mg/L feed CODconcentrations,the volumetric COD loading rates should be less than 20kg CODI( m￣3·d),hydraulic retention tirne morethan 12h,and ALK/VFA ratio more than 2.0, respectively; One metric ton of the organic fraction in domestic refuse couldproduce 41. 49m￣3 of biogas with over 59%methane content.Based on the analysis of the steady-state operation,the process kinetic models are developed.The models can be used to design and predict the reactor performance.

关 键 词：沼气 生活垃圾 AAFEB 工艺 厌氧附着膜膨胀 

分 类 号：S216.4[农业科学—农业机械化工程]