POTENTIAL USE OF SOLAR RADIATION TO DESINFECT DOMESTIC WASTEWATER IN BRAZIL.

Authors

  • Rodrigo M. Sánchez-Román Post-doctoral  researcher, Departamento  de Engenharia Rural, Escola Superior  de Agricultura Luiz de Queiroz (ESALQ), Universidade de São Paulo (USP), Piracicaba, SP, Brazil, CNPq fellow;
  • Antonio Alves Soares Professor, Environmental and Agricultural Engineering Department (DEA), Universidade Federal de Viçosa (UFV), MG, Brazil;
  • Gilberto  C.  Sediyama Professor, DEA, UFV, MG, Brazil;
  • Antônio  Teixeira de  Matos Associate Professor, DEA, UFV, MG, Brazil;

DOI:

https://doi.org/10.18011/bioeng2008v2n3p283-294

Keywords:

Time of Exposure, Solar Disinfection, Solar Radiation.

Abstract

World's population growth is provoking an increasing demand of energy and clean water. Brazil is,mainly, a tropical country; therefore, it possesses a solar energy potential year round. Solar radiationis a promising energy source option, considering its non-pollutant nature, permanent readinessand cost zero. An alternative use for solar radiation is for disinfection of domestic wastewater(DWW), reducing environmental contamination and increasing water availability for agriculture.Solar radiation values for 202 meteorological stations dispersed in the Brazilian territory weredetermined. With these data and the model proposed by Sánchez-Román et al. (2007), it wascomputed the time of exposure necessary to disinfect DWW, to guarantee the World HealthOrganization's recommendation for agricultural purposes. 48 maps were developed consideringfour depths of DWW in the solar reactor. These maps showed the time of exposure required,anywhere in Brazil, to disinfect DWW reducing the coliform population from 3.5 x 106 NMP 100mL-1 down to 1.000 NMP 100 mL-1. It could be observed that the solar disinfection technology isapplicable in almost all the Brazilian territory during almost all year; and in some specific areas forat least eight months.

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References

ALLEN, R.G., PEREIRA, L.S., RAES, D.,SMITH, M. Crop evapotranspiration - Guidelinesfor computing crop water requirements. FAOIrrigation and drainage paper 56. Food andAgriculture Organization of the United Nations,Roma, 1998. 308 pp.

IQBAL, M. An Introduction to Solar Radiation.Academic Press, Canada, 1983. 390 pp.LIOU, K. An Introduction to AtmosphericRadiation. Academic Press, Calif., 1980. 392pp.

MARTINS, F. R., PEREIRA, E. B., DE ABREU,S. L., COLLE, S. Mapas de irradiação solar parao Brasil - Resultados do Projeto SWERA. ANAISXII SIMPÓSIO BRASILEIRO DESENSORAMIENTO REMOTO; Goiânia, Brasil,16-21 abril 2005.

INPE: 3137-3145.NORMAIS CLIMATOLÓGICAS (1961-1990).Ministério de Agricultura e Reforma Agrária,Secretaria Nacional de Irrigação, Departamen-to Nacional de Meteorologia. Brasília, 1992. 84pp.

NUNES, G. S., ANDRÉ, R. G. B., VIANELLO,R. L., MARQUE, V. S. Estudo da Distribuiçãode Radiação Solar Incidente sobre o Brasil.Revista brasileira de armazenamento, v.4(2),p.5-30, 1979.

SÁNCHEZ-ROMÁN, R. M. Desinfecção Solarde Esgoto Doméstico para Uso na AgriculturaFamiliar. Tese de Doctor Scientiae em Enge-nharia Agrícola: Universidade Federal de Viço-sa, Viçosa, MG, Brasil. 110p. 2006.

SÁNCHEZ-ROMÁN, R. M., SOARES, A. A.,MATOS, A. T., SEDIYAMA, G. C., DESOUZA,O., MOUNTEER, A. H. Domestic WastewaterDisinfection Using Solar Radiation forAgricultural Reuse. Transactions of the ASABE,v.50(1), p.65-71, 2007a.

SÁNCHEZ-ROMÁN, R. M., SOARES, A. A.,SEDIYAMA, G. C., MATOS, A. T. Avaliação Fi-nanceira da Implantação de um Sistema de Tra-tamento de Desinfecção de Águas ResiduaisDomésticas para reuso na Agricultura Familiar.ANAIS XXXVI CONGRESSO BRASILEIRO DEENGENHARIA AGRÍCOLA; Bonito, MS, Brasil,2007b.

VIANELLO, R. L., ALVES, A. R. MeteorologiaBásica e Aplicações (2da. Edição). Viçosa,Editorial Universidade Federal de Viçosa, 1991.449 pp.

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Published

2008-12-15

How to Cite

Sánchez-Román, R. M., Soares, A. A., Sediyama, G. C., & Matos, A. T. (2008). POTENTIAL USE OF SOLAR RADIATION TO DESINFECT DOMESTIC WASTEWATER IN BRAZIL . Revista Brasileira De Engenharia De Biossistemas, 2(3), 283–294. https://doi.org/10.18011/bioeng2008v2n3p283-294

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Section

Regular Section