Structure performance for the treatment of rain source water based on the SODIS method

Authors

DOI:

https://doi.org/10.6008/CBPC2179-6858.2022.002.0010

Keywords:

Rainwater harvesting system, Water security, E.Coli

Abstract

Population in urban and rural areas are water insecure due to a lack of access to drinking water. In this context, the Solar Water Disinfection (SODIS) method represents a simple and low-cost alternative for the inactivation of microorganisms responsible for waterborne diseases. The objective of the present work was to build and evaluate the performance of a structure for the treatment of rainwater based on the SODIS method. Low-cost materials, such as a PET bottle to store raw water; and a 120 mm PVC pipe, constituted the structure. Two structures were assembled, the first using a reflector made of aluminium foil and the second without a reflector. Samples of rainwater from the rainwater harvesting system installed at the Institute of Science and Technology of Sorocaba (ICTS-Unesp) were collected from February to June 2021. The analysis of pH (digital pHmeter), temperature (infrared thermometer), Color (colourimeter), Turbidity (turbidimeter), total solids, dissolved oxygen (oximeter), total nitrogen and total phosphorus (HACH DR 3900 spectrophotometer), and E.Coli (Colillert method) were performed on raw and treated water, in the Water and Soil Laboratory of ICTS-Unesp. The results in both structures reached an efficiency of 100% in the neutralization of E.Coli bacteria and reduced turbidity. However, secondary treatment is necessary to adjust the physical-chemical standards of potability

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Author Biographies

Vitor Kendi Aquinaga, Universidade Estadual Paulista

Student of Environmental Engineering of the undergraduate course in Environmental Engineering of the Institute of Science and Technology of Sorocaba, Universidade Estadual Paulista (Unesp)

Gerson Araujo de Medeiros, Universidade Estadual Paulista

Graduated in Agricultural Engineering, Mastership and Doctorate in Water and Soil Engineering from Universidade Estadual de Campinas (UNICAMP), where studied the influence of water and tropical soil management at yield and water consumption of irrigated bean, an important crop for the Brazilian diet; Expert in Drainage and Watershed Management from Universidade de Taubaté (UNITAU). In 2015, to reinforce international insertion, developed studies at post-doctoral level on economic aspects of ecosystems services at the Faculty of Agricultural, Life and Environmental Sciences (ALES), University of Alberta (UofA), in Edmonton, Canada. In 2019, I held an exchange period at the Universitat Autônoma de Barcelona (UAB), Barcelona, Spain, under the supervision of Professors Xavier Gabarrell Durany and Joan Rieradevall Pons. During this period I conducted a study on solid waste management in five Brazilian cities using the CO2ZW software, developed by UAB's Sostenipra research group and led by Professors Xavier and Joan.Since 2011 has been Professor at Institute of Science and Technology of Sorocaba (ICTS) at Universidade Estadual de São Paulo (UNESP) for the graduate course in Environmental Sciences and undergraduate course in Environmental Engineering, where has developed an educational constructivist approach based on landscape analyzes, as a way to evolve the understanding of environmental complexity. Has attended several conferences, symposiums and seminars on Environmental Sciences, including topics such as environmental impacts assessment, environmental management, water and soil management and landscape analyzes. The academic production includes 40 book chapters, 90 articles, 300 conference papers and abstracts, amounting over 400 publications. The broad experience and expertise in teaching, researching and academic extension have allowed developing works approaching different social groups as rural settlements, neighborhood communities, philanthropic institutions, and high school students, addressing the popularization of science and environmental issues such as natural resources management, re-vegetation of degraded land and waste management. Therefore, this academic journey has demonstrated guidance towards the improvement of the society welfare.

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Published

2022-07-02

Issue

Vol. 13 No. 2 (2022): Revista Ibero-Americana de Ciências Ambientais - Fev 2022

Section

Engenharia Ambiental

License

Copyright (c) 2022 Ibero-American Journal of Environmental Sciences

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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