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:: Volume 5, Issue 1 (11-2017) ::
jehe 2017, 5(1): 73-82 Back to browse issues page
Study of Effective Factors on E.coli Removal from Water Using Solar Radiation Disinfection
Narges Behdarvand , Elham Godini , Hatam Godini , Ghodratolah Shams Khoramabadi
MSc in Microbiology, Department of Microbiology, Faculty of Biological Sciences, Alzahra University, Tehran, Iran
Abstract:   (454 Views)
 
Introduction: The removal of microbial pollutants is important for access of water quality standard. Therefore, drinking water disinfection for pathogens removal or inactivation conducted in water treatment installations. Today, due to environmental friendly, solar radiation disinfection considered. Objective of this study was effect of certain environmental factors such as turbidity, organic matter, container kind, and initial bacteria concentrations on E. coli removal from water solution using solar radiation disinfection.
Material and Methods: In this study, the performance of E. coli removal were evaluated using different container (PET and Glass), turbidity (0, 10, 20 NTU), organic matter (0, 5, 10 mg/l), and initial E. coli concentrations (100, 200, 300 bacteria/ml) as experimental study. This study conducted at perfectly sunny days in July and August between 11 to 15 o’clock with maximum radiation intensity.
Results: Results of this study show that both PET and Glass containers are capable to decrease of 300 E.coli per milliliter to zero at 60 min contact time. With increasing of organic matter, turbidity, and initial concentration of E. coli, bacterial removal rate from water solution decreased. Generally, solar radiation can be provide 100 % removal of E. coli in a water solution with 300 E. coli/l as initial concentration, 20 NTU of turbidity and 10 mg/l of organic matter with 60 min contact time.  
Conclusion: The use of solar radiation technology is suitable for drinking water disinfection both at household level and at remote communities even for water with high turbidity and high organic matter concentrations.
 
Keywords: Solar disinfection, E. coli, Water solutions, Water treatment.
Full-Text [PDF 355 kb]   (137 Downloads)    
Type of Study: Research | Subject: Special
Received: 2018/02/17 | Accepted: 2018/02/17 | Published: 2018/02/17
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Behdarvand N, Godini E, Godini H, Shams Khoramabadi G. Study of Effective Factors on E.coli Removal from Water Using Solar Radiation Disinfection . jehe. 2017; 5 (1) :73-82
URL: http://jehe.abzums.ac.ir/article-1-454-en.html


Volume 5, Issue 1 (11-2017) Back to browse issues page
مجله مهندسی بهداشت محیط Journal of Environmental Health Enginering
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