作　　者： ;

机构地区： 浙江科技学院

出　　处： 《中国造纸学报》 2009年第3期102-105,共4页

摘　　要： 采用不同工艺及设备模拟CTMP工艺,得到了桉木CTMP废液。探讨了不同工艺条件下废液的水质参数、可生化性、污染物质、分子质量及色度等。研究结果表明,桉木CTMP制浆废液污染负荷高,可生化性一般,色度深且随pH值升高显著加深。木素衍生物和多酚类物质的酚羟基的离子化及与金属离子的络合是废液色度深的主要原因。相对分子质量大于10000的有机组分是色度的主要构成。混合制浆时,桉木比例越大,色度越深,COD负荷相对较小;预处理段和磨浆段污染负荷表现出与全桉木相反的情况,可能原因是混合磨浆过程中两者的溶出物发生进一步反应,有利于更多物质的溶出。 The eucalyptus CTMP effluent was prepared by simulating CTMP pulping technology in different laboratory conditions. The waste water quality parameters, biodegradability, pollutants, the molecular mass characteristics of organic pollutants, chromaticity characteristics of the effluent and so on were investigated. The results showed that the pollution load of effluent was high, the biodegradability was moderate, and the chromaticity was dark and increased significantly with the pH value. The main reasons of dark chromaticity were the ionization of polyphenols hydroxyl and its metal complexes of lignin derivatives and polyphenols in the effluent. The main source of the chromaticity was the organic components with molecular weight higher than 10000. When the mixed woods raw material was used, the greater the proportion of eucalyptus wood was, the darker chromaticity was, and COD load was relatively low. The pollution loads of refining stage and pretreatment stage showed complete difference between eucalyptus and the mixed masson pine and eucalyptus. The reason probably was due to the further reaction of the dissolved materials from mixed raw material refining process, and it was favorable to more organic material dissolve.

关 键 词： 桉木 废液 色度

领　　域： [环境科学与工程]