A feasibility study of thermal hydrolysis by-products as barrier layer materials in the final cover system for a landfill

Ji Hoon Jeong, Byung Taek Oh, Jai Young Lee

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Most sludge has historically been disposed of in landfills and by ocean dumping but, because of its heavy metal content, this will be totally banned in Korea starting in 2012, based on the London Dumping Convention. Therefore, treatment and disposal methods that are environmentally friendlily are urgently required. The recycling of sewage sludge is a good treatment method for solving sludge problems in an environmentally friendly way. In this study, physical and environmental tests were conducted to evaluate the feasibility of using the by-products of thermal hydrolysis of sewage sludge as barrier layer materials in the final cover systems for landfills. In addition, testing methods for freezing-thawing (KS F 2332) and wetting-drying (KS F 2330) cycles were conducted to assess the effects of cold and hot soil climates starting from pavement. These tests yielded positive results for alternative materials for the barrier layer in a final cover system for a landfill.

Original languageEnglish
Pages (from-to)208-213
Number of pages6
JournalJournal of Material Cycles and Waste Management
Volume11
Issue number3
DOIs
StatePublished - Sep 2009

Keywords

  • Barrier layer
  • By-products
  • Final cover system
  • Freezing-thawing
  • Landfill
  • Wetting-drying

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