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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/11213
Title: Disinfection of water by various techniques – comparison based on experimental investigations
Authors: Roy P.K.
Kumar D.
Ghosh M.
Majumder A.
Published in: Desalination and Water Treatment
Abstract: In the present study, laboratory experiments were conducted for determining effectiveness of various disinfectants against inactivation of Total Coliform and Fecal Coliform of water samples collected from different sites of Jadavpur University. Chlorine (sodium hypochlorite and bleaching powder), silver, copper, solar radiation, ultraviolet rays and boiling was facilitated; samples were intermittently tested with respect to contact time (CT) following most probable number technique (MPN/100 ml) and bacteriological H2S strip tests. After chlorination, chlorine demand and residual-free chlorine was obtained using modified Horrocks method. Effective CT sufficient to lower down the viable counts, by various mode of treatment are as follows: boiling-1 min < chlorination-30 min < UV treatment-1 h < SODIS-6 h < silver wire-8 h < copper wire-8–10 h. Samples were passed through ultraviolet rays at different flow rates; it was very effective against lower contamination. However, it did not show good disinfection against higher contamination, suggesting a need for providing proper contact. Silver and copper disinfection requires low operational cost nonetheless takes longer time for disinfection. SODIS may be encouraged in rural areas though a weather-dependent process. Boiling is efficient and faster compared to other methods, chlorine disinfection is a standard process to treat large volume of contaminated water; though should be avoided as its byproducts are very harmful for human health. © 2016 Balaban Desalination Publications. All rights reserved.
Citation: Desalination and Water Treatment (2016), 57(58): 28141-28150
URI: https://doi.org/10.1080/19443994.2016.1183522
http://repository.iitr.ac.in/handle/123456789/11213
Issue Date: 2016
Publisher: Taylor and Francis Inc.
Keywords: Calcium hypochlorite
Chlorination
Copper wire
Disinfection
Most probable number/100 ml (MPN/100 ml) and bacteriological H2S strip test
Silver wire
Sodium hypochlorite
Solar disinfection (SODIS)
Ultra violet radiation
ISSN: 19443994
Author Scopus IDs: 9268741900
57202478211
57209634667
56001621800
Author Affiliations: Roy, P.K., School of Water Resources Engineering, Jadavpur University, 188, Raja S.C. Mullick Road, Kolkata, 700 032, India
Kumar, D., School of Water Resources Engineering, Jadavpur University, 188, Raja S.C. Mullick Road, Kolkata, 700 032, India
Ghosh, M., School of Water Resources Engineering, Jadavpur University, 188, Raja S.C. Mullick Road, Kolkata, 700 032, India
Majumder, A., School of Water Resources Engineering, Jadavpur University, 188, Raja S.C. Mullick Road, Kolkata, 700 032, India
Corresponding Author: Roy, P.K.; School of Water Resources Engineering, Jadavpur University, 188, Raja S.C. Mullick Road, India; email: pk1roy@yahoo.co.in
Appears in Collections:Journal Publications [ME]

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