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首页> 外文会议>Appita Annual Conference and Exhibition incorporating the ISWFPC(International Symposium on Wood, Fibre and Pulping Chemistry) vol.1: Appita Conference Sessions; 20050516-19; Auckland(NZ) >Characterization and biodegrad-ability of effluents derived from hot acid hydrolysis and hot chorine dioxide bleaching of eucalyptus pulp
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Characterization and biodegrad-ability of effluents derived from hot acid hydrolysis and hot chorine dioxide bleaching of eucalyptus pulp

机译：桉木浆热酸水解和热二氧化氯漂白废水的特性和生物降解性

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摘要

Final effluent quality of biologically treated effluents originating from sequences beginning with hot acid/chlorine dioxide stages was similar to that of effluents from conventional chlorine dioxide bleaching of eucalypt kraft pulp. Pre-bleaching with the D_(HT)-stage produced effluent with a higher organic load (COD, TOC, BOD_5 and color) but lower AOX load than pre-bleaching with the D-stage, but while biological treatment removal efficiency of the organic loads were similar for the two effluents, AOX removal efficiency was lower in the D_(HT) effluent. Biologically treated effluents from sequences incorporating the D_(HT) technology presented lower color loads than those from conventional D-stage bleaching. Inclusion of a hot acid hydrolysis stage lowered effluent biodegradability, especially when combined with a hot chlorine dioxide stage (A/D_(HT)), without inter-stage washing.
机译：从热酸/二氧化氯阶段开始的顺序进行生物处理的出水的最终出水质量与桉树牛皮纸浆的常规二氧化氯漂白出水的质量相似。 D_（HT）阶段的预漂白产生的废水具有较高的有机负荷（COD，TOC，BOD_5和色料），但AOX负荷低于D阶段的预漂白，但是生物处理去除了有机物的效率两种废水的负荷相似，D_（HT）废水的AOX去除效率较低。结合了D_（HT）技术的序列经过生物处理的流出物的色负荷比传统D阶段漂白法产生的色负荷低。包括热酸水解阶段会降低废水的生物降解性，尤其是在与热二氧化氯阶段（A / D_（HT））结合使用而无需阶段间洗涤的情况下。

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