ANAEROBIC CO-TREATMENT OF LEACHATES PRODUCED IN A BIODEGRADABLE URBAN SOLID WASTE COMPOSTING PLANT IN MEXICO CITY

  • J. Gan
  • G. Montaño
  • C. Fajardo
  • M. Meraz
  • P. Castilla Universidad Autónoma Metropolitana-Xochimilco
Keywords: anaerobic filter reactor, biodegradable solid waste, compost leachate, co-treatment, methane

Abstract

In this work the anaerobic co-treatment of the leachates produced during urban solid biodegradable wastes composting diluted with municipal wastewater, was investigated. Leachates produced during the first 30 days of garbage composting contained 102.1 g COD L−1 , 20 g VFA L−1 , acid pH and 0.64 g NH+ 4 -N L−1 . Instead, leachates that remained for 3 months the composting plant after being produced contained 15.8 g COD L−1 , 2.35 g VFA L−1 , a pH near neutrality and 5.36 g NH+ 4 -N L−1 . An anaerobic zeolite packed filter reactor was used for the biological treatment and was operated at a constant HRT of 1.5 d. Leachates were diluted with municipal wastewater (0.4 g COD L−1 ) to obtain feedings with organic matter concentrations ranging from 1.8 to 13.1 g COD L−1 and organic loading rates from 1.2 to 8.7 g COD L−1−1 . Removal efficiencies attained increased from 79.5 to 91.5% and methane productivity from 0.23 to 1.84 L L−1 d −1 , rendering 0.48 L CH4 per g consumed COD, equivalent to 118 kJ L−1 of fed influent

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Published
2020-04-07
How to Cite
Gan, J., Montaño, G., Fajardo, C., Meraz, M., & Castilla, P. (2020). ANAEROBIC CO-TREATMENT OF LEACHATES PRODUCED IN A BIODEGRADABLE URBAN SOLID WASTE COMPOSTING PLANT IN MEXICO CITY. Revista Mexicana De Ingeniería Química, 12(3), 541-551. Retrieved from http://www.rmiq.org/ojs311/index.php/rmiq/article/view/1532
Section
Environmental Engineering

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