• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Waste management & research >Chemical properties and biodegradability of waste paper mill sludges to be used for landfill covering
【24h】

Chemical properties and biodegradability of waste paper mill sludges to be used for landfill covering

机译：废纸厂污泥的化学性质和可生物降解性，可用于垃圾掩埋场

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Waste paper mill sludges originating from different effluent treatment and de-inking installations are complex mixtures of inorganic and organic particles. Due to their favourable physico-chemical, and microbiological characteristics, they may be conveniently reused for different purposes as such or after appropriate pretreatment. Sludges from the Slovenian paper industry were extensively tested for their chemical, stability and sealing properties. During the biodegradability tests, evolutions of greenhouse gases CO_2, CH_4 and H_2S as well as the concentrations of released volatile organic acids, such as acetic, propionic, butyric, lactic and glycollic acids as the typical degradation products of organic materials, were measured. Some other important parameters of water leachates such as pH, redox potential, content of starch and leachable ions were also evaluated. The results indicate that most of them can be efficiently applied as alternative hydraulic barrier layers for landfill construction and covering instead of the more expensive clay due to their good geomechanical properties, chemical inertness and microbiological stability. Such replacement brings about considerable economical and ecological benefits as the waste is reprocessed as secondary raw material.
机译：来自不同废水处理和脱墨设备的废纸厂污泥是无机和有机颗粒的复杂混合物。由于它们的良好的理化和微生物学特性，它们可以方便地重复用于其他目的，或经过适当的预处理。斯洛文尼亚造纸工业的污泥经过了化学，稳定性和密封性能的广泛测试。在生物降解性测试中，测量了温室气体CO_2，CH_4和H_2S的释放以及释放的挥发性有机酸的浓度，例如有机材料的典型降解产物乙酸，丙酸，丁酸，乳酸和乙醇酸。还评估了水浸出液的其他一些重要参数，例如pH，氧化还原电势，淀粉含量和可浸出离子。结果表明，由于它们的良好的地质力学性能，化学惰性和微生物稳定性，它们中的大多数可以有效地用作替代性的水力阻挡层，用于填埋场建设和覆盖，而不是使用更昂贵的粘土。随着废物作为二次原料进行再处理，这种替代带来了可观的经济和生态效益。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号