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Effect of Anaerobic Digestion on Calorific Value and Pyrolysis Residues of Paper Mill Sludge
  
DOI：10.11980/j.issn.0254-508X.2012.10.009
Key Words:paper mill sludge  anaerobic digestion  pyrolysis  heavy metals
Fund Project:本课题为国家高新技术研究发展计划（863计划）资助项目（2012AA063504）。
Author NameAffiliation
刘　攀1 1.中国海诚工程科技股份有限公司，上海，201702 
宋学顶2 2.同济大学热能与环境所，上海，200092 
戚永宜1 1.中国海诚工程科技股份有限公司，上海，201702 
陈德珍2 2.同济大学热能与环境所，上海，200092 
钱　敏1 1.中国海诚工程科技股份有限公司，上海，201702 
吴立群1 1.中国海诚工程科技股份有限公司，上海，201702 
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Abstract:Two different types of paper mill sludge were used as substrate to carry out anaerobic digestion experiments, comparison of the calorific value of the sludge and the total content of heavy metals in the pyrolysis residues and its leaching solution of the sludge before and after anaerobic digestion was investigated. The results showed that the methane produced in the process of anaerobic digestion could be used to dry the sludge or to heat the pyrolysis furnace indirectly. Although the calorific value of anaerobic digested mixed sludge was reduced, the degree of energy self- sufficiency of the pyrolysis system was improved. The total content of the heavy metals in pyrolysis residues was related to the vaccinated sludge, but the leaching rate was lower than national leachate concentration limit for hazardous constituents.
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