Development of a predictive mathematical model using multi level factorial design for solar disinfection of treated urban wastewater

Sajjala Sreedhar Reddy; Najat Issa Al Balushia; Salam K. Al Dawery; Anwar Ahmed

Author(s)

Sajjala Sreedhar Reddy Department of Civil and Environmental Engineering, University of Nizwa,,Oman

Najat Issa Al Balushia Department of Civil and Environmental Engineering, University of Nizwa,,Oman

Salam K. Al Dawery Department of Chemical and Petrochemical Engineering, University of Nizwa,,Oman

Anwar Ahmed Department of Civil and Environmental Engineering, University of Nizwa,,Oman

Abstract

The purpose of this research is to use a factorial experimental design to disinfect total coliform bacteria present in treated urban wastewater using solar disinfection processes. The multilevel factorial design (4321) was used to study the influence of factors and interaction between factors on total coliform removal. The four factors considered were Solar energy, Volume of Sample, Exposure time and type of reactor at two markedly different levels: solar energy (1100,1300, 1500 and 1700 W.h/m2), volume of sample (0.2,0.5,1 and2L), exposure time (0.5,1,2 and 3 hrs.) and type of reactor (Open air and Solar reactor). The experimental results of the solar disinfection process were analyzed statistically using the student's t -test, analysis of variance, F -test, and lack of fit to define the most important process variables affecting total coliform removal. It is observed that the type of reactor is the variable with the greatest influence on the response factor (percentage of total coliform removed), although other variables also have a significant influence. Furthermore, a mathematical model (regression equation) has been obtained taking into account the influence of variables of total coliform removal. The model adequately describes the total coliform removal from treated urban wastewater using solar disinfection.

Publication Details

Page(s) 400-406

DOI DOI not available

Published Journal: ARPN Journal of Engineering and Applied Sciences, Volume: 17, Issue: 4, Year: 2022

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Keywords

multi-level factorial design, urban wastewater, Total coliform, solar disinfection

References

Al-Maadheed S.,Goktepe I.,Latiff A.B.A,Shomar B. .2019 .Antibiotics in hospital effluent and domestic wastewater treatment plants in Doha. Qatar. Journal of Water Process Engineering, 28 : 60-68.

Caicedo C.,Rosenwinkel K.H.,Exner M. .2019 .Legionella occurrence in municipal and industrial wastewater treatment plants and risks of reclaimed wastewater reuse: review. Water Research, 149 : 21-34.

Tang J.,Zhang C.,Shi X.,Sun J,Cunningham J.A. .2019 .Municipal wastewater treatment plants coupled with electrochemical, biological and bioelectrochemical technologies: opportunities and challenge toward energy self-sufficiency. Journal of Environmental Management, 234 : 396-40.

. .. Radiat Phys Chem, 79 : 424-428.

Ata R .2019 .Characterization and removal of antibiotic residues by NFC-doped photocatalytic oxidation from domestic and industrial secondary treated wastewaters in Meric-Ergene Basin and reuse assessment for irrigation. Journal of Environmental Management, 233 : 673-680.

Kumar R.,Tscharke B,O'Brien J. .2019 .Assessment of drugs of abuse in a wastewater treatment plant with parallel secondary wastewater treatment train. Science of the Total Environment, 658 : 947-957.

Wang M,Chen Y. .2018 .Generation and characterization of DOM in wastewater treatment processes. Chemosphere, 201 : 96-109.

USEPA. .2004 .Guidelines for Water Reuse. , : .

WHO. .2006 .Guidelines for the Safe Wastewater, Excreta. , : .

Use . .. , 2 : .

DM ,D. .2003 .Lgs 11 maggio 1999. n. 152. Gazzetta Ufficiale.n. 169 del 23 luglio., (c) : .

Water Recycling Guidelines Queensland .2005 .. , : .

.2007 .Concerns of the legal regime for the reuse of treated water. BOE no 294., 1620 : .

.1986 .Regulations for wastewater re-use and discharge. Ministry of Environment and Water Resources, : .

Shimizu N.,Ninomiya K.,Ogino C.,Rahman M. M. .2010 .Potential uses of titanium dioxide in conjunction with ultrasound for improved disinfection. Biochem Eng J, 48 : 416-423.

Tahri L.,Elgarrouj D.,Zantar S.,Mouhib M.,Azmani A.,Sayah F. .2010 .Wastewater treatment using. , : .

Bagabas A.,Gondal M.,Khalil A.,Dastageer A.,Ashameri Z.,M. Z. .2010 .Studies in Surface Science and. , 175 : 279-282.

Gusbeth C.,Frey W.,Volkmann H.,Schwartz T.,Bluhm H. .2009 .Pulsed electric field treatment for bacteria reduction and its impact on hospital wastewater. Chemosphere, 75 : 228-233.

Lee B. H.,Song W. C.,Manna B.,Ha J. K. .2008 .Dissolved ozone flotation (DOF) - a promising technology in municipal wastewater treatment. Desalination, 225(1-3) : 260-273.

Acher A.,Fischer E.,Turnheim R.,Manor Y. .1997 .Ecologically friendly wastewater disinfection techniques. Water Research, 31(6) : 1398-1404.

Boyle M.,Sichel C.,Ferna C.,Arias - Quiroz G. B.and C.,Mercado A.,Ubomba-Jaswa E.,McGuigan K. G. .2008 .Bactericidal Effect of Solar Water Disinfection under Real Sunlight Conditions. Applied and Environmental Microbiology, 74(10) : 2997-3001.

McCambridge J.,McMeekin T. A. .1981 .Effect of solar radiation and predacious microorganisms on survival of fecal and other bacteria. Applied and Environmental Microbiology, 41(5) : 1083-1087.

Baird R.,Bridgewater L. .2017 .Standard methods for the examination of water and wastewater. 23rd edition, : .

Carmona M. E.,M. A. M. E.,Leite Ferreira,S. G. Ferreira .2005 .Biosorption of chromium using factorial experimental design. Process Biochemistry, 40(2) : 779-788.

Rodríguez-Chueca J.,Mosteo R.,Ormad M.P.,OvellerioJ.L M.P. .2012 .Factorial experimental design applied to Escherichia coli disinfection by Fenton and photo-Fenton processes. Solar Energy, 86(11) : 3260-3267.