【作者】 李红斌； 房桂干； 邓拥军； 施英乔； 沈葵忠； 李萍； 韩善明； 焦健；

【Author】 LI Hong-bin FANG Gui-gan DENG Yong-jun SHI Yingqiao SHEN Kui-zhong LI Ping HAN Shan-ming JIAO Jian (Institute of Chemical Industry of Forest Products,CFA;National Engineering Lab for Chemical Utilization of Biomass; Key Lab.on Chemical Engineering of Forest,State Forestry Administration;Key Lab.of Biomass Energy and Material, Jiangsu Province Nanjing,210042)

【机构】 中国林业科学研究院林产化学工业研究所,生物质化学利用国家工程实验室,国家林业局林产化学工程重点开放性实验室,江苏省生物质能源与材料重点实验室；

【摘要】 分别采用过氧化氢/过氧乙酸和过氧化氢/硼氢化钠组合工艺将麦草化机浆漂白至72.8%和74.0%的高白度,研究了漂白废水的污染负荷以及废水的主要成分。研究结果表明,麦草化学机械浆P₁P₂B漂白工艺三段漂白废水BOD₅与COD_Cr总发生量分别为149.1 kg/t浆和384.2 kg/t浆,均低于PaP₁P₂漂白工艺三段漂白废水,分别降低了15.8%和19.3%;两种漂白废水的主要污染物质成分构成较为接近,均含有芳香族化合物和脂肪族化合物,但是Pa段漂白废水中酯类有机物和4,4-二羟基二苯丙烷的相对含量明显高于NaBH₄漂白废水中的含量。更多还原

【Abstract】 Under the condition that high brightness(respectively 72.83%ISO,73.98%ISO) of wheat straw chemi-mechanical pulp bleached by peracetic acid and sodium borohydride combined with alkaline peroxide was gained,effluent load and waste liquor components of bleaching effluent from bleached pulp was described in this paper.The research results showed that both COD value and BOD value of bleaching effluent from wheat straw chemi-mechanical pulp P1P2B bleaching stages are lower than that of PaP1P2,which are 149.06 kg/t pulp and 384.24 kg/t pulp respectively.BOD is lower by 15.84%,COD is lower by 19.26%;The molecular structures of pollutant in these two kinds of effluent are similar,both contain aromatic compounds and aliphatic compounds,which can be determined by chromatography and mass spectrometry.The content of esters organic compounds and 4,4’ -(1-methylethylidene) bis- organicas from Pa bleaching effluent is obviously higher than the content of organicas from NaBH4 bleaching effuent.更多还原