Assessment of the behavior of protozoa Giardia spp. and Cryptosporidium spp. and indicator microorganisms in the wastewater treatment and in river water

• Grant number: 10/07902-1
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: September 01, 2010
• End date: April 30, 2013
• Field of knowledge: Engineering - Sanitary Engineering - Water Supply and Wastewater Treatment
• Principal Investigator: Luiz Antonio Daniel
• Grantee: Raphael Corrêa Medeiros
• Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil

Abstract

Are still preliminary studies about the removal and inactivation of pathogenic protozoa - Giardia spp. and Cryptosporidium spp. - in various stages of sewage treatment. This study aims to assess and compare the removal and inactivation of these pathogenic protozoa with indicator organisms - total coliforms, Escherichia coli, Clostridium perfringens - in a sewage treatment plant (STP) on a pilot scale.For this, we intend to examine a treatment system consisting of UASB (Upflow Anaerobic Sludge Blanket), activated sludge, sand filter, followed by disinfection with chlorine, ozone and ultraviolet radiation. Finally, check in full-scale WWTP (WWTP Monjolinho, located in São Carlos - SP), the behavior of microorganisms in the processing steps and in river water.

Scientific publications

(7)

(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)

MEDEIROS, RAPHAEL CORREA; DANIEL, LUIZ ANTONIO; DE OLIVEIRA, GABRIELA LAILA; HOFFMANN, MARIA TERESA. Performance of a small-scale wastewater treatment plant for removal of pathogenic protozoa (oo)cysts and indicator microorganisms. ENVIRONMENTAL TECHNOLOGY, v. 40, n. 26, p. 3492-3501, NOV 23 2019. (10/07902-1, 11/08653-8)

MEDEIROS, RAPHAEL CORREA; SAMMARRO SILVA, KAMILA JESSIE; DANIEL, LUIZ ANTONIO. Wastewater treatment performance in microbiological removal and (oo)cyst viability assessed comparatively to fluorescence decay. ENVIRONMENTAL TECHNOLOGY, v. 43, n. 7, p. 9-pg., 2020-08-29. (12/50522-0, 11/08653-8, 10/07902-1)

MEDEIROS, RAPHAEL CORREA; SILVA, KAMILA JESSIE SAMMARRO; HOFFMANN, MARIA TERESA; FREITAS, BARBARA LUIZA SOUZA; CAMARGO, MARIZA DE; FORTES, PATRICIA RODRIGUES; SABOGAL-PAZ, LYDA PATRICIA; DANIEL, LUIZ ANTONIO. Synergistic effects of chlorine and ozone on ultraviolet disinfection of different microorganisms in secondary wastewater effluent. PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES, v. 24, n. 9, p. 15-pg., 2025-10-05. (10/07902-1, 12/50522-0, 24/13135-6, 11/08653-8)

MEDEIROS, RAPHAEL CORREA; DANIEL, LUIZ ANTONIO. Study of sequential disinfection for the inactivation of protozoa and indicator microorganisms in wastewater. ACTA SCIENTIARUM-TECHNOLOGY, v. 37, n. 2, p. 203-209, 2015. (10/07902-1, 07/08499-3)

MEDEIROS, RAPHAEL CORREA; SAMMARRO SILVA, KAMILA JESSIE; DANIEL, LUIZ ANTONIO. astewater treatment performance in microbiological removal and (oo)cyst viability assessed comparatively to fluorescence deca. ENVIRONMENTAL TECHNOLOGY, v. 43, n. 7, AUG 2020. (12/50522-0, 10/07902-1, 11/08653-8)

MEDEIROS, RAPHAEL CORREA; DANIEL, LUIZ ANTONIO. Comparison of selected methods for recovery of Giardia spp. cysts and Cryptosporidium spp. oocysts in wastewater. JOURNAL OF WATER AND HEALTH, v. 13, n. 3, p. 811-818, 2015. (12/50522-0, 10/07902-1, 11/08653-8)

MEDEIROS, RAPHAEL CORREA; DANIEL, LUIZ ANTONIO. Quantification and analysis of the viability of (oo)cysts of pathogenic protozoa in sewage sludge. ACTA SCIENTIARUM-TECHNOLOGY, v. 40, 2018. (12/50522-0, 10/07902-1, 11/08653-8)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

MEDEIROS, Raphael Corrêa. Assessment of removal of Giardia spp. and Cryptosporidium spp. from wastewater treatment processes. 2013. Doctoral Thesis - Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC/SBD) São Carlos.