Removal and inactivation of Giardia spp. and Cryptosporidium spp. in drinking water with high turbidity, using flotation, employing aluminum hydroxychloride and ozone

• Grant number: 13/08192-6
• Support type: Scholarships in Brazil - Master
• Effective date (Start): September 01, 2013
• Effective date (End): November 30, 2013
• Field of knowledge: Engineering - Sanitary Engineering - Water Supply and Wastewater Treatment
• Principal researcher: Lyda Patricia Sabogal Paz
• Grantee: Letícia Franco Leonel
• Home Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Associated research grant: 12/50522-0 - Environmental contamination by protozoa Giardia spp. and Cryptosporidium spp. and Ascaris suum: challenges of detection, removal and inactivation of infective forms, AP.TEM

Abstract

This research aims to evaluate removal and inactivation of Giardia spp. e Cryptosporidium spp. performing treatability tests in static reactors (Flotatest), in water with high turbidity (about 100 uT). The idea is analyzing water treatment using aluminum hydroxychloride and ozone. The research is foreseen at FAPESPThematic Project - Environmental contamination by protozoa Giardia spp. and Cryptosporidium spp. and Ascaris Suum: challenges of detection, removal and inactivation of infectious forms. (Process number: 2012/50522-0).In order to develop the activities, the infrastructure of Laboratório de Tratamento Avançado e Reuso de Águas (LATAR) and Laboratório de Saneamento from SHS/EESC/USP will be used. The research will be developed in the following sequential stages: I) preparation of studied water (mixture of water from EESC/USP well, with kaolinite); II) treatability tests using Flotatest with laboratory filter kits adapted to the equipment; III) evaluation of Cantusio Neto (2008) method, with adaptations to concentration and detection of protozoa in water using membrane filtration; IV) treatability tests using the studied water with protozoa inoculums and application of ozone to the treated water at a pilot installation; V) viability tests with DAPI (4',6 diamidino-2-phenylindole) and Propidium Iodide (PI); and VI) animal infectivity tests.This research intends to extend the knowledge related to removal and inactivation of emerging microorganisms in drinking water, considering the generated sludge at the treatment. The obtained results will guide future researches and sanitation companies which are intended to evaluate, remove and inactivate protozoa in drinking water with high turbidity. (AU)

Academic Publications

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

LEONEL, Letícia Franco. Performance of wastewater treatment plants: an analysis of small and medium wastewater treatment pond systems integrated with evaluation of water bodies quality in UGRHI 12 - Baixo Pardo/Grande. 2016. Master's Dissertation - Universidade de São Paulo (USP). Escola de Engenharia de São Carlos São Carlos.