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复合电解电化学法处理桉木化学机械浆制浆废液及其机理分析
  • ISSN号:1005-0930
  • 期刊名称:应用基础与工程科学学报
  • 时间:0
  • 页码:377-385
  • 分类:X793[环境科学与工程—环境工程]
  • 作者机构:[1]华南理工大学制浆造纸工程国家重点实验室,广东广州510640, [2]华南理工大学造纸与污染控制国家工程研究中心,广东广州510640
  • 相关基金:2011省院全面战略合作重大项目(2011A090100030);国家自然科学基金项目(20776055,20977033)
  • 相关项目:跨界融合复合微生物团聚体高效降解造纸废水
中文摘要:

针对化学机械浆废液有机物浓度高、色度深、处理难度大的问题,应用复合电解电化学法处理桉木化学机械浆制浆废液,探讨了各工艺条件对处理效果的影响,并对机理进行分析.结果表明:CODcr,和色度去除效果受pH值、槽电流和通过量的影响,较低的pH值、较低的通过量和较高的槽电流有利于提高废液的处理效果;在pH为4、槽电流为0.5A、通过量为40ml/min的条件下,CODcr,和色度去除率分别达到60%和92%.红外光谱分析表明,复合电解处理过程发生了羰基和木素结构的破坏,这可能是处理后废液色度大幅降低的重要原因;气相色谱一质谱联用(GC-MS)分析表明,废液经过复合电解电化学法处理,芳香族类化合物相对含量减少,非芳香族类化合物相对含量显著增加,表明部分芳香族化合物的结构在处理过程中发生断裂破坏,生成了非芳香族的有机物,有利于降低废液毒性,提高可生物降解性.该方法可用于化学机械浆制浆废液生物处理前的预处理.

英文摘要:

To solve problems of high concentration treatment difficulty for chemimechanical pulp (CEE) method was used to treat eucalyptus of organic compounds, deep color and high effluent, composite electrolysis electrochemical chemimechanical pulp effluent, and effect of technological conditions on treatment efficiency was discussed and the mechanism was analyzed. Results showed that CODor and color removal efficiency was influenced by pH, cell current and flow rate, and the treatment efficiency increased at lower pH, lower flow rate and higher cell current, and that under conditions of pH of 4, cell current of 0. 5A and flow rate of 40ml/min, CODcr and color removal rates were 60% and 92% respectively. IR analysis indicated that destruction of conjugate carbonyl and lignin structure happened during CEE treatment and was possibly the important reason of obvious color removal of the effluent after CEE treatment. GC-MS analysis showed that content of aromatic compounds decreased and non- aromatic compounds content obviously increased after CEE treatment, which indicated that structures of some aromatic compounds were destroyed and non-aromatic compounds produced during CEE treatment, and that toxicity of the effluent decreased and biodegradability enhanced after CEE treatment. The method could be used for pretreatment of chemimechanical pulp effluent before biological treatment.

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期刊信息
  • 《应用基础与工程科学学报》
  • 北大核心期刊(2011版)
  • 主管单位:中国科学技术协会
  • 主办单位:中国自然资源学会
  • 主编:倪晋仁
  • 地址:北京大学环境大楼312室
  • 邮编:100871
  • 邮箱:jbse@iee.pku.edu.cn
  • 电话:010-62753153
  • 国际标准刊号:ISSN:1005-0930
  • 国内统一刊号:ISSN:11-3242/TB
  • 邮发代号:
  • 获奖情况:
  • 国内外数据库收录:
  • 荷兰文摘与引文数据库,美国工程索引,中国中国科技核心期刊,中国北大核心期刊(2011版),中国北大核心期刊(2014版)
  • 被引量:7313