Application of response surface methodology in the analysis of parameters influencing the removal of turbidity and nematodes in direct filtration process

Document Type : Research Article

Authors

1 Civil Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran

2 Biology Department, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran

Abstract

Nematodes are well-known due to their resistance to disinfectants and their ability to ingest and carry pathogens to water distribution systems. Coagulation and filtration play significant roles in removing these organisms in water treatment plants. Investigating the effect of different parameters on the nematodes removal has always been an interest to researchers. However, the simultaneous evaluation of these parameters needs a comprehensive statistical analysis. In this study, the effects of ferric chloride dosage, filter media type, and filtration rate were investigated on the removal efficiency of turbidity and nematodes in direct filtration process using response surface methodology and central composite face-centered design. Based on the results, the average removal efficiency of turbidity, motile nematodes and non-motile nematodes in single-media filter were 96.14, 94.02 and 41.39%, respectively. Meanwhile, these numbers for dual-media filter were obtained as 96.61, 95.76 and 46.01%, respectively. With the increase in coagulant dosage, the removal efficiency of nematodes was improved significantly. Furthermore, the removal efficiency of non-motile nematodes was increased as the filtration rate decreased. However, an increase in the filtration rate led to an unexpected increase in the removal efficiency of motile nematodes. This distinct behavior of the nematodes led to the independence of total nematodes removal from the filtration rate. According to the results, using the direct filtration process is suggested, when the turbidity of raw water is lower than 5 NTU. However, primary disinfection must be applied to immobilize the nematodes and compensate the weakness of granular beds in the removal of motile nematodes.

Keywords

Main Subjects

References

[1]J. Kim, D.F. Lawler, The influence of hydraulic loads on depth filtration, Water Research, 46(2) (2012) 433-441.
[2]J. Mott, G. Mulamoottil, A. Harrison, A 13-month survey of nematodes at three water treatment plants in Southern Ontario, Canada, Water Research, 15(6) (1981) 729-738.
[3]A.W.W. Association, M7 Problem Organisms in Water: Identification and Treatment, 3rd ed., American Water Works Association, 2004.
[4]F. Bichai, Y. Dullemont, W. Hijnen, B. Barbeau, Predation and transport of persistent pathogens in GAC and slow sand filters: a threat to drinking water safety, Water Research, 64 (2014) 296-308.
[5]E.-M. Zetsche, F.J. Meysman, Dead or alive? Viability assessment of micro-and mesoplankton, Journal of Plankton Research, 34(6) (2012) 493-509.
[6]K.N. Caldwell, B.B. Adler, G.L. Anderson, P.L. Williams, L.R. Beuchat, Ingestion of Salmonella enterica serotype Poona by a free-living nematode, Caenorhabditis elegans, and protection against inactivation by produce sanitizers, Applied and Environmental Microbiology, 69(7) (2003) .0114-3014
[7]O. Huamanchay, L. Genzlinger, M. Iglesias, Y.R. Ortega, Ingestion of Cryptosporidium oocysts by Caenorhabditis elegans, Journal of Parasitology, 90(5) (2004) 1176-1178.
[8]A. Locas, B. Barbeau, V. Gauthier, Nematodes as a source of total coliforms in a distribution system, Canadian Journal of Microbiology, 53(5) (2007) 580-585.
[9]F. Bichai, B. Barbeau, P. Payment, Protection against UV disinfection of E. coli bacteria and B. subtilis spores ingested by C. elegans nematodes, Water Research, 43(14) (2009) 3397-3406.
[10]J. Mott, A. Harrison, Nematodes from river drift and surface drinking water supplies in southern Ontario, Hydrobiologia, 102(1) (1983) 27-38.
[11]W.H. Organization, Guidelines for drinking-water quality, 4th ed., WHO, Geneva, 2017.
[12]N. Grech, F. Rijkenberg, Injection of electrolytically generated chlorine into citrus microirrigation systems for the control of certain waterborne root pathogens, Plant Disease, 76(5) (1992) 457-461.
[13]H. Hugo, A. Malan, Occurrence and control of plantparasitic nematodes in irrigation water: a review, South African Journal of Enology and Viticulture, 31(2) (2010) 169-180.
[14]K.W. Tang, C. Dziallas, H.P. Grossart, Zooplankton and aggregates as refuge for aquatic bacteria: protection from UV, heat and ozone stresses used for water treatment, Environmental Microbiology, 13(2) (2011) 378-390.
[15]L. Fabrizi, B. Jefferson, S.A. Parsons, A. Wetherill, P. Jarvis, The role of polymer in improving floc strength for filtration, Environmental Science & Technology, 44(16) (2010) 6443-6449.
[16]J. Kim, J.E. Tobiason, Particles in filter effluent: The roles of deposition and detachment, Environmental Science & Technology, 38(22) (2004) 6132-6138.
[17]R. Jiao, R. Fabris, C.W. Chow, M. Drikas, J. van Leeuwen, D. Wang, Z. Xu, Influence of coagulation mechanisms and floc formation on filterability, Journal of Environmental Sciences, 57 (2017) 338-345.
[18]A. International, ASTM D4188-17, Standard Practice for Performing Pressure In-Line Coagulation-FlocculationFiltration Test in Water, in, West Conshohocken, PA, 2017. [19] A.W.W. Association, ANSI/AWWA B100-16 Granular Filter Material, in, AWWA, 2016.
[20]A.P.H. Association, A.W.W. Association, W.E. Federation, Standard methods for the examination of water and wastewater, 22nd ed., American Public Health Association, 2012.
[21]W.a.W.C.o. Iran, Work Instruction for sampling, Identifying and counting free living Nematode in water, in, 2017.
[22]D.C. Montgomery, Design and Analysis of Experiments, 9th ed., John Wiley & Sons, New York, USA, 2017.
[23]M.A. Bezerra, R.E. Santelli, E.P. Oliveira, L.S. Villar, L.A. Escaleira, Response surface methodology (RSM) as a tool for optimization in analytical chemistry, Talanta, 76(5) (2008) 965-977.
[24]B. Kakoi, J.W. Kaluli, P. Ndiba, G. Thiong'o, Optimization of Maerua Decumbent bio-coagulant in paint industry wastewater treatment with response surface methodology, Journal of Cleaner Production, 164 (2017) 1124-1134.
[25]M.E. Abdullahi, M.A. Abu Hassan, Z. Zainon Noor, R. Raja Ibrahim, Integrated air stripping and non-thermal plasma system for the treatment of volatile organic compounds from wastewater: statistical optimization, Desalination and Water Treatment, 57(34) (2016) 1606616077.
[26]S. Ghafari, H.A. Aziz, M.H. Isa, A.A. Zinatizadeh, Application of response surface methodology (RSM) to optimize coagulation–flocculation treatment of leachate using poly-aluminum chloride (PAC) and alum, Journal of Hazardous Materials, 163(2-3) (2009) 650-656.
[27]E. Rosales, M. Sanromán, M. Pazos, Application of central composite face-centered design and response surface methodology for the optimization of electroFenton decolorization of Azure B dye, Environmental Science and Pollution Research, 19(5) (2012) 1738-1746.
[28]S.S. Moghaddam, M.A. Moghaddam, M. Arami, Coagulation/flocculation process for dye removal using sludge from water treatment plant: optimization through response surface methodology, Journal of Hazardous Materials, 175(1-3) (2010) 651-657.
[29]J. Shin, C. O'Melia, Pretreatment chemistry for dual media filtration: model simulations and experimental studies, Water Science and Technology, 53(7) (2006) 167-175.
[30]M. Memarzadeh, P. Najafi, M. Afuni, Efficiency of garnet mineral used in three-layer filters to remove turbidity and biological organisms in Isfahan water treatment plant, Journal of Water and Wastewater, 21(1) (2010) 76-83 (in Persian).
[31]A. Rashidi Mehrabadi, A. Torabian, Evaluating the efficiency of direct filtration in the removal of free-living nematodes, Journal of Environmental Studies, 32(39) (2006) 75-82 (in Persian).
[32]R.L. Peterson, R. Engelbrecht, J.H. Austin, Free-living nematode removal by rapid sand filters, Journal of the Sanitary Engineering Division, 92(1) (1966) 229-244.
[33]A.K. Seth, M.G. George, J.K. Bewtra, V.P. Sharma, Nematode removal by rapid sand filtration, American Water Works Association, 60(8) (1968) 962-968.
[34]N. Matsumoto, T. Aizawa, S. Ohgaki, T. Hirata, K. Toyooka, T. Kanbayashi, Y. Tsutsumi, T. Hasegawa, Removal methods of nematoda contained in the effluent of activated carbon, Water Science and Technology: Water Supply, 2(3) (2002) 183-190.
[35]A.W.W. Association, A.S.o.C. Engineers, Water Treatment Plant Design, 5th ed., McGraw-Hill, New York, 2012.
[36]J.C. Crittenden, R.R. Trussell, D.W. Hand, K.J. Howe, G. Tchobanoglous, MWH's water treatment: principles and design, John Wiley & Sons, 2012.
[37]J.K. Edzwald, Water Quality and Treatment A Handbook on Drinking Water, McGrawHill, 2010.
[38]T.K. Trinh, L.S. Kang, Response surface methodological approach to optimize the coagulation–flocculation process in drinking water treatment, Chemical Engineering Research and Design, 89(7) (2011) 1126-1135.
[39]R. Divakaran, V.S. Pillai, Flocculation of river silt using chitosan, Water Research, 36(9) (2002) 2414-2418.
[40]N. Orooji, A. Takdastan, A. Kargari, G. Raeesi, Efficiency of Chitosan with Polyaluminum Chloride in Turbidity Removal from Ahwaz Water Treatment Plant Influent, Journal of Water and Wastewater, 23(4) (2012) 70-77 (in Persian).
[41]P. Gao, G. Xue, X.-s. Song, Z.-h. Liu, Depth filtration using novel fiber-ball filter media for the treatment of high-turbidity surface water, Separation and Purification Technology, 95 (2012) 32-38.
[42]M. Mokari, H. Banejad, M. Mosaddeghi, Effect of Filtration Velocity and Rapid Sand Filter Bed Depth on Removal Efficiency of Suspended Particles, Journal of Water and Wastewater, 22(2) (2011) (in Persian).
[43]N.-E. Sabiri, E. Monnier, V. Raimbault, A. Massé, V. Séchet, P. Jaouen, Effect of filtration rate on coal-sand dual-media filter performances for microalgae removal, Environmental Technology, 38(3) (2017) 345-352.
[44]G.W. Harrington, I. Xagoraraki, P. Assavasilavasukul, J.H. Standridge, Effect of filtration conditions on removal of emerging waterborne pathogens, Journal‐American Water Works Association, 95(12) (2003) 95-104.
Amirkabir Journal of Civil Engineering
Volume 52, Issue 9
December 2020
Pages 2155-2170

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