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The Investigation of Sanitary Wastewater Disinfection Using Ultra Violet Light Irradiation in Conjunction with (TiO2+Fe2 O3 ,TiO2,H2 O2 )

Mohammadi, Hossein | 2016

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 48495 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Moslemi, Mohammad Reza; Erhami, Mohammad
  7. Abstract:
  8. Numerous strategies have been applied to deal with the drought crisis such as reusing the effluent wastewater in irrigating crops, sports spaces, parks, health, entertainment purposes etc.Although the common treatment of sewage can eliminate almost 95% to 99% of microorganisms but this level of treatment is not enough for reusing the sewage, due to the existence of Pathogenic microorganisms. Therefore, disinfecting the wastewater effluent is one of the crucial stages of sewage’s treatment for preserving water resources or reusing it. Chlorination is the most common method of disinfecting wastewater. However, using a wastewater which is disinfected through Chlorination has Harmful effect on fauna and flora and cause cancer in human with generating trihalomethane compounds. Thus, alternative methods are required to protect consumers’ health while being efficient and convenient and do not produce harmful secondary substances.The present study examined the use of UV lamp system for disinfecting the real waste of a wastewater treatment plant as an efficient and effective method. The advanced oxidation process (AOP) was used in this method by constructing a continuous reactor with 20ml/min output rate and conducting 6 stages of examinations. The results indicated that simultaneous use of ultraviolet light with a titanium dioxide at a concentration of 50 -250 mg.L is the most optimal alternative disinfection method which eliminated 90 percent of the batteries on the first 30 minutes of disinfecting process
  9. Keywords:
  10. Continuous Reactor ; Disinfection ; Ultraviolet Radiation ; Advanced Oxidation Process ; Effluent Wastewater

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