Alternative technology for landfill leachate treatment

• Grant number: 10/11218-9
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: July 01, 2011
• End date: June 30, 2015
• Field of knowledge: Engineering - Sanitary Engineering - Water Supply and Wastewater Treatment
• Principal Investigator: Eugenio Foresti
• Grantee: Tiago Henrique Martins
• Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Associated research grant: 09/15984-0 - Bioenergy production from wastewaters and environmental fitting of liquid and solid wastes generated, AP.TEM

Abstract

It is intended to evaluate the effect of ammonia nitrogen removal on the biological treatment of landfill leachate and the effect of adding nitrate (obtained from the oxidation of ammonia nitrogen previously adsorbed on zeolite) in the removal of recalcitrant compounds in the leachate treatment process carried out under anoxic conditions. The prior removal of ammonia nitrogen will be done by adsorption on zeolites. The zeolite is regenerated by biological nitrification, which should remove ammonia-N and nitrate to produce the subsequent removal of organic matter and nitrogen. The leachate collected from landfill of São Carlos-SP, once characterized, feed reactors for removal of ammonia-N and organic matter. It will be used in batch reactors and upflow reactor, each containing zeolite. The batch tests will be conducted in triplicate and the 150rpm and 25 º C. Will be evaluated the effect of dilution of the leachate in the removal of ammonia by adsorption isotherms. In the column, it will be tested load capacity by nitrogen saturation curve. Regeneration of the zeolite will be tested for biological nitrification batch with the zeolite containing ammonium adsorbed and ion-exchange column itself. In all regeneration experiments, activated sludge is used as a source of nitrifying microorganisms. The pretreated leachate (after removal of ammonium) shall undergo treatment in sequencing batch reactor for removal of organic matter. In another test, the raw leachate is mixed with the nitrified effluent resulting from the regeneration of the column of zeolite, with the aim of evaluating the possibility of refractory organic matter removal by denitrifying biomass. In the end, there will be cloning, sequencing and phylogenetic analysis of microbial communities present in the reactors by analysis of 16S rRNA gene fragment. This project is linked to the project theme of Bioenergy Production in Wastewater Treatment and Adequacy of Environmental Waste and Waste Generated (2009/15984-0 FAPESP process). (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DEL RIO, ANGELES VAL; DA SILVA, TULIO; MARTINS, TIAGO HENRIQUE; FORESTI, EUGENIO; CAMPOS, JOSE LUIS; MENDEZ, RAMON; MOSQUERA-CORRAL, ANUSKA. Partial Nitritation-Anammox Granules: Short-Term Inhibitory Effects of Seven Metals on Anammox Activity. WATER AIR AND SOIL POLLUTION, v. 228, n. 11, NOV 10 2017. (13/24189-5, 10/11218-9)

MARTINS, TIAGO HENRIQUE; SOUZA, THEO S. O.; FORESTI, EUGENIO. Ammonium removal from landfill leachate by Clinoptilolite adsorption followed by bioregeneration. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, v. 5, n. 1, p. 63-68, FEB 2017. (10/11218-9)