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Study on the Removal Efficiency of Stubborn COD in Pulping Wastewater by Fenton Oxidation
  
DOI：10.11980/j.issn.0254-508X.2012.11.003
Key Words:pulping wastewater  Fenton oxidation  fluidized-bed reactor Fenton oxidation  biotreatbility
Author NameAffiliation
宋　云1,2 1.轻工业环境保护研究所，北京，100089；2.北京科技大学，北京，100083 
李培中1 1.轻工业环境保护研究所，北京，100089 
程言君1 1.轻工业环境保护研究所，北京，100089 
王海见1 1.轻工业环境保护研究所，北京，100089 
宋存义2 2.北京科技大学，北京，100083 
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Abstract:Traditional Fenton oxidation and fluidized-bed reactor (FBR) Fenton oxidation were used to treat the pulping wastewater, FBR Fenton process could significantly reduce oxidant quantity and by-product, and increase CODCr removal efficiency. Fenton reaction had CODCr removal limit and the treated effluent could not stably meet the requirement of the regulation due to the complex property of the pulping wastewater. In the optimum conditions: 1/2Qth H2O2，Fe2+/H2O2 1∶5，CODCr of the treated effluent decreased from 1004 mg/L to 235 mg/L, and BOD5/CODCr increased to 0.59. The AOX and GC-MS test result of dichloromethane extractive also indicated the improvement of biotreatability. FBR Fenton-biotreatment integrated process is proposed to treat the pulping wastewater to meet the discharge requirement of the regulation.
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