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  • 标题:Alkaline solubilisation of waste activated sludge (WAS) for soluble organic substrate – (SCOD) production / Tworzenie się rozpuszczalnego substratu organicznego podczas zasadowego rozpuszczania osadów ściekowych
  • 作者:Jan Suschka ; Eligiusz Kowalski ; Jerzy Mazierski
  • 期刊名称:Archives of Environmental Protection
  • 印刷版ISSN:2083-4772
  • 电子版ISSN:2083-4810
  • 出版年度:2015
  • 卷号:41
  • 期号:1
  • 页码:29-34
  • DOI:10.1515/aep-2015-0012
  • 语种:English
  • 出版社:Walter de Gruyter GmbH
  • 摘要:Improving the effects of hydrolysis on waste activated sludge (WAS) prior to anaerobic digestion is of primary importance. Several technologies have been developed and partially implemented in practice. In this paper, perhaps the simplest of these methods, alkaline solubilization, has been investigated and the results of hydrolysis are presented. An increase to only pH 8 can distinctively increase the soluble chemical oxygen demand (SCOD), and produce an anaerobic condition effect favorable to volatile fatty acids (VFA) production. Further increases of pH, up to pH 10, leads to further improvements in hydrolysis effects. It is suggested that an increase to pH 9 is sufficient and feasible for technical operations, given the use of moderate anti-corrosive construction material. This recommendation is also made having taken in consideration the option of using hydrodynamic disintegration after the initial WAS hydrolysis process. This paper presents the effects of following alkaline solubilization with hydrodynamic disintegration on SCOD
  • 关键词:alkaline hydrolysis ; waste activated sludge ; anaerobic digestion
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