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WASTEWATER POST-TREATMENT FOR NITROGEN COMPOUNDS REMOVAL USING A HORIZONTAL ANOXIC-AEROBIC REACTOR FEEDING WITH BIOGAS AND AIR

Grant number: 15/18976-0
Support Opportunities:Scholarships in Brazil - Post-Doctoral
Effective date (Start): January 01, 2016
Effective date (End): February 28, 2021
Field of knowledge:Engineering - Sanitary Engineering - Water Supply and Wastewater Treatment
Principal Investigator:Marcelo Zaiat
Grantee:Renata de Bello Solcia Guerrero
Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated research grant:15/06246-7 - Biorefinery concept applied to biological wastewater treatment plants: environmental pollution control coupled with material and energy recovery, AP.TEM
Associated scholarship(s):18/10331-8 - Recovery of rare-earth elements and elemental sulfur from acid mine drainage, BE.EP.PD

Abstract

Many industrial wastewater and sewage treatment plants use anaerobic reactors for the biological treatment of effluents. However, effluents from these reactors contains nitrogen compounds that can lead to environmental impact when discharged. The main goal of this project is to develop a new reactor configuration for post-treatment of effluents from UASB (Up-flow Anaerobic Sludge Blanket) reactors for the removal of nitrogen compounds. A mixed anoxic-aerobic horizontal fixed bed reactor will be developed to operate nitrification and denitrification process in a unique reactor. To minimize operational costs, in the denitrification zone of the reactor, biogas/H2S will be provided as an electron donor. Thus, two processes will be carried out simultaneously, the nitrogen removal from the effluent and the biogas biodesulfurization, which can be used for energy production. To optimize the operational conditions of the bioreactor, the ammonium concentration contained in the wastewater, the ratio N/S needed to stabilize the reactor, the hydraulic retention time of the effluent and biogas residence time will be studied. The evolution of microbial diversity in different zones of the reactor will be analyzed using the Denaturing Gradient Gel Electrophoresis (DGGE), metagenomics and Scanning Electron Microscopy.

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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)
SOLCIA GUERRERO, RENATA DE BELLO; DINIZ DOS SANTOS, CARLA ELOISA; SOARES, LAIS AMERICO; ZAIAT, MARCELO. Comparison between two different fixed-bed reactor configurations for nitrogen removal coupled to biogas biodesulfurization. Biochemical Engineering Journal, v. 162, . (15/18976-0, 15/06246-7)
GOUVEA DE GODOI, LEANDRO AUGUSTO; SOLCIA GUERRERO, RENATA DE BELLO; DINIZ DOS SANTOS, CARLA ELOISA; FORESTI, EUGENIO; ZAIAT, MARCELO; RISSATO ZAMARIOLLI DAMIANOVIC, MARCIA HELENA. Rapid and easy quantification of elemental sulphur in aqueous samples from biological reactors: the turbidimetric method revisited. INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY, v. 99, n. 9, p. 809-823, . (15/18976-0, 15/06246-7)

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