Treatment of municipal solid waste landfill leachate by use of combined biological, physical and photochemical processes

V. J. Inglezakis, A. Amzebek, B. Kuspangaliyeva, Y. Sarbassov, G. Balbayeva, A. Yerkinova, S. G. Poulopoulos

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The purpose of this work was to study the treatment of a leachate coming from the municipal solid waste landfill of Astana (Kazakhstan). Physical (striping and adsorption), biological and photochemical processes were applied separately or in combination, and the treatment efficiency was attended in terms of carbon and nitrogen removal. The leachate carbon was by 45%–60% inorganic while nitrogen was almost 100% inorganic in the form of ammonia. The results showed that inorganic carbon and ammonia can be almost entirely removed by air stripping at pH = 7 and pH = 12, respectively. The removal of organic carbon by stripping alone was lower than 4% but combined to adsorption reached 20%, and to biological treatment 30%. The removal of organic carbon by photochemical oxidation alone was 43%. The combination of stripping, adsorption and biological treatment resulted in 37% organic carbon and with the addition of photochemical oxidation step the removal was increased to 59%. In overall, total carbon removal reached 85% and total nitrogen removal almost 100%. The results showed that the decomposition of landfill leachate carbon is a challenging task requiring a combination of processes. On the contrary, as almost all nitrogen is inorganic, air stripping at elevated pH alone can sufficiently eliminate it.

Original languageEnglish
Pages (from-to)218-231
Number of pages14
JournalDesalination and Water Treatment
Volume112
DOIs
Publication statusPublished - Apr 1 2018

Fingerprint

Municipal solid waste
Land fill
municipal solid waste
Organic carbon
Carbon
Nitrogen removal
Adsorption
organic carbon
carbon
inorganic nitrogen
Ammonia
adsorption
leachate
Nitrogen
ammonia
Oxidation
oxidation
Air
nitrogen
inorganic carbon

Keywords

  • Activated sludge
  • Landfill leachate
  • Leachate treatment
  • Photo-Fenton

ASJC Scopus subject areas

  • Water Science and Technology
  • Ocean Engineering
  • Pollution

Cite this

Treatment of municipal solid waste landfill leachate by use of combined biological, physical and photochemical processes. / Inglezakis, V. J.; Amzebek, A.; Kuspangaliyeva, B.; Sarbassov, Y.; Balbayeva, G.; Yerkinova, A.; Poulopoulos, S. G.

In: Desalination and Water Treatment, Vol. 112, 01.04.2018, p. 218-231.

Research output: Contribution to journalArticle

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