Useful ingredients recovery from sewage sludge by using hydrothermal reaction

Koichi Suzuki, Mika Moriyama, Yuki Yamasaki, Yui Takahashi, Chihiro Inoue

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Hydrothermal treatment of sludge from a sewage treatment plant was conducted to obtain useful ingredients for culture of specific microbes which can reduce polysulfide ion into sulfide ion and/or hydrogen sulfide. Several additives such as acid, base, and oxidizer were added to the hydrothermal reaction of excess sludge to promote the production of useful materials. After hydrothermal treatment, reaction solution and precipitation were qualitatively and quantitatively analyzed and estimated the availability as nutrition in cultural medium. From the results of product analysis, most of organic solid in sewage was basically decomposed by hydrothermal hydrolysis and transformed into oily or water-soluble compounds. Bacterial culture of sulfate-reducing bacteria (SRB) showed the good results in multiplication with medium which was obtained from hydrothermal treatment of sewage sludge with magnesium or calcium hydroxide and hydrogen peroxide.

Original languageEnglish
Title of host publicationWATER DYNAMICS
Subtitle of host publication3rd International Workshop on Water Dynamics
Pages75-77
Number of pages3
DOIs
Publication statusPublished - 2006 May 15
EventWATER DYANMICS: 3rd International Workshop on Water Dynamics - Sendai, Japan
Duration: 2005 Nov 162005 Nov 17

Publication series

NameAIP Conference Proceedings
Volume833
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherWATER DYANMICS: 3rd International Workshop on Water Dynamics
Country/TerritoryJapan
CitySendai
Period05/11/1605/11/17

Keywords

  • Chemical recycle
  • Hydrolysis
  • Hydrothermal reaction
  • SRB(sulphate-reducing bacteria)
  • Sewage

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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