生物反应器填埋条件下垃圾生物质组分...

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第25卷第9期
2005年9月
环境科学学报
Acta Scientiae Circumstantiae
Vo1．25．No．9
Sep．，2005
瞿贤，何品晶，邵立明，等．生物反应器填埋条件下垃圾生物质组分的初期降解规律[J]．环境科学学报，2005，25(9)：1219―1225
Q0 Xian，HE r~njing，SHAO Liming，et a1．Biomass compositions fermentation in initial stage of fresh municipal solid waste degradation in bioreactor landfill[J]
Acta Scientiae Circumstantiae．2005。25(9)：1219―1225
生物反应器填埋条件下垃圾生物质组分的初期降解
规律
瞿 贤，何品晶 ，邵立明，李国建
同济大学污染控制与资源化研究国家重点实验室，上海200092
收稿日期：2005．02．25 修回日期：2005―07―04 录用日期：2005―07．11
摘要：在经甲烷化填埋层渗滤后的渗滤液循环回灌的新鲜垃圾填埋层内，以生物质分类表征为基础，分析了新鲜垃圾填埋层内固相各生物质组
分(总糖、蛋白质、脂肪、纤维素和木质素)的初期降解规律．结果表明，垃圾中原有总糖组分和蛋白质的快速水解发酵是新鲜垃圾填埋后产生高
有机质浓度渗滤液的主要机制；脂肪和纤维素的降解产物不是填埋初期高有机质浓度渗滤液的主要来源；纤维素是填埋层稳定产甲烷阶段的
主要碳源，其水解速率可能是甲烷化过程的限速步骤；纤维素／木质素之质量比可作为指示填埋垃圾稳定化的指标．各生物质组分的初期降解
速率常数均在0．01至0．1之间，而填埋气体中甲烷体积分数在60 d内达到45％ ．食品垃圾组分富集的生活垃圾，应用生物反应器填埋技术时，
必须具备足够的降解容量以代谢填埋初期固相中总糖和蛋白质快速水解产生的酸性液相产物．
关键词：生物反应器填埋；生活垃圾；固相有机物降解；生物质组分；水解速率常数
文章编号：0253―2468(2005)09―1219―07 中图分类号：X705 文献标识码：A

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Biomass compositions fermentation in initial stage of fresh municipal solid waste
degradation in bioreactor landrill
QU Xian，HE Pinjing ，SHAO Liming，LI Guojian
State Key Laboratory of Pollution Control and Resources Reuse，Tongji University，Shangllai，200092
Received 25 February 2005； reedved in revised form 4 July 2005； accepted 1 1 July 2005
Abstract：Lab-scale simulated fresh MSW bioreactor lan dfill columns，recirculated with the leachate from stabilized lan dfill layer，were setup．Sugar， protein，
lipid，cellulose and lignin fermentation in the fresh MSW landfill layer were studied．The results indicated that sugar and protein fermentation caused high
concentrations of organic carbon in the leachate during the initial stage of waste degradation．However，the degradation of lipid an d cellulose during the initial stage
was much slower，an d they were not the key compositions causing heavy leachate pollution．Celulose was the principle soul~e of carbon for the methan ogenetic
process，an d the hydrolysis rate of celulose was the limi ting factor for waste degradation and methanogenesis．Th e hydrolysis rate constanla for all the compositions
were between 0．O1to0．1：themethan e volumefractionfoundinthelan dfi l gas reached45％ in65 days．Suficient capacityfor degradation of acidic produc~from
sugar an d protein ferm entation should be supplied when the bioreactor landfi l technology is applied as the MSW characterized with hish food waste content．
Keywords：bioreactor lan dfill；municipal solid waste；solid phase organics degradation；biomnss composition；hydrolysis rate content

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生物反应器填埋条件下垃圾生物质组分的初期降解.rar