| 污泥和餐厨垃圾联合干法中温厌氧消化性能研究 |
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| 引用本文： | 段妮娜,董滨,李江华,戴翎翎,戴晓虎.污泥和餐厨垃圾联合干法中温厌氧消化性能研究[J].环境科学,2013,34(1):321-327. |
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| 作者姓名： | 段妮娜 董滨 李江华 戴翎翎 戴晓虎 |
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| 作者单位： | 同济大学环境科学与工程学院,城市污染控制国家工程研究中心,上海200092 |
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| 基金项目： | 国家科技支撑计划项目(2010BAC67B04);国家水体污染控制与治理科技重大专项(2011ZX07316-004) |
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| 摘 要： | 采用完全混合式反应器R1～R5(进料脱水污泥与餐厨垃圾的湿重混合比分别为1:0、4:1、3:2、2:3和0:1),在半连续运行的状态下,考察了停留时间(solid retention time,SRT)为20 d时脱水污泥和餐厨垃圾混合干法厌氧消化的产气性能、有机质降解性能和系统稳定性.结果表明,随着进料中餐厨垃圾所占比例的增大,系统的产气率和甲烷产率呈上升趋势,产气中甲烷含量呈下降趋势,污泥中添加餐厨垃圾有助于在利用原有消化罐容积的前提下显著提高有机负荷和体积产气率.餐厨垃圾比例越大,混合物料的水解速率常数越大,有机质降解率越高,R1～R4中有机质水解速率常数分别为0.25、0.61、1.09和1.56 d-1,有机质降解率分别为37.4%、50.6%、60.7%和68.2%,水解速率差异是导致VS降解率不同的主要原因.随着餐厨垃圾比例的增大,系统内pH、总碱度(total alkalinity,TA)、总氨氮(total ammonia nitrogen,TAN)和游离氨氮(free ammonianitrogen,FAN)呈下降趋势,当污泥中添加的餐厨垃圾提高60%时,系统内pH、总碱度、总氨氮和游离氨氮分别下降6%、16%、22%和75%.游离氨和Na+分别是影响污泥和餐厨垃圾单独干法消化稳定性的重要因素,污泥和餐厨垃圾混合消化可降低潜在抑制性物质的浓度,显著提高系统稳定性.
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| 关 键 词： | 厌氧 高含固 脱水污泥 餐厨垃圾 水解速率 |
| 收稿时间： | 2012/3/13 0:00:00 |
| 修稿时间： | 5/8/2012 12:00:00 AM |
High-solids Anaerobic Co-digestion of Sludge and Kitchen Garbage Under Mesophilic Conditions |
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| DUAN Ni-n,DONG Bin,LI Jiang-hu,DAI Ling-ling and DAI Xiao-hu.High-solids Anaerobic Co-digestion of Sludge and Kitchen Garbage Under Mesophilic Conditions[J].Chinese Journal of Environmental Science,2013,34(1):321-327. |
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| Authors: | DUAN Ni-n DONG Bin LI Jiang-hu DAI Ling-ling and DAI Xiao-hu |
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| Institution: | National Engineering Research Center for Urban Pollution Control, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;National Engineering Research Center for Urban Pollution Control, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;National Engineering Research Center for Urban Pollution Control, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;National Engineering Research Center for Urban Pollution Control, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;National Engineering Research Center for Urban Pollution Control, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | |
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| Keywords: | anaerobic high solids dewatered sludge (DS) kitchen garbage (KG) hydrolysis rate |
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