L_11_Disinfection_and_Chlorine_upgraded_06

L_11_Disinfection_and_Chlorine_upgraded_06 - Disinfection...

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    Disinfection EVEG 3110 October 15, 2003
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    Disinfection Goal: To destroy the pathogenic (disease causing) microorganisms in water/wastewater. Not sterilization (the complete destruction of all organisms in a water or wastewater)
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    Disinfection in Water Treatment Surface Water Treatment Rule (USA) Title 40, Parts 141 and 143 99.9% (log 3) Giardia cysts inactivated 99.99% (log 4) enteric viruses inactivated Other Maximum Contaminant Levels (MCL) Cryptosporidum Giardia lamblia Legionella
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    Waterborne Disease: Enteric Pathogens   Bacteria  Typhoid fever Salmonella typhosa High fever Diarrhea Ulceration of small intestines Shigellosis - Dysentery Shigella Severe diarrhea Cholera Vibrio cholerae High death rate Severe diarrhea Dehydration Salmonellosis Salmonella Fever Nausea Diarrhea
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    Waterborne Disease: Enteric Pathogens  Viruses Poliomyelitis Polio virus Infectious Hepatitis Hepatitis A virus Jaundice Fever Protoza Amebiasis Amebic Dysentery Entamoeba histolytica Prolonged diarrhea with bleeding Abscesses of the liver and small intestine
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    Microorganisms in Water & Wastewater Protoza: Giardia lamblia Upper small intestine Giardiasis Mild to severe diarrhea Nasuea Indigestion Flatulence Most widespread or protozoan diseases in world Don’t drink from streams
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    Microorganisms in Water & Wastewater Protoza: Cryptosporidium parvum Severe disease in individuals with compromised immune systems Bacteria: Legionella ssp Legionnaires disease Pneumonia
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    Disease Spread by Vectors Droste, 1997
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    Water Based: Spread by Vectors Trematode: Schistosomas Blood flukes Tissue damage Blood loss in bladder Intestinal venous damage Nematode: Filaroidea worms Blocking of lymph nodes Permanent damage to tissue
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    City of Baton Rouge – Central Plant M i s s i s s i p p i   R i v e r Chlorine Contact Sedimentation Bar Rack Grit  Chambe r Trickling Filters TF Secondary Clarifiers
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    Chlorine Contact Chamber Droste, 1997
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    Overview on Disinfection Add something to destroy pathogens Chemical agent Chlorine, Chlorine Dioxide, Ozone, Bromine, Iodine Physical agent Ultraviolet Light, Heat Mechanical means Radiation Electromagnetic, Acoustic, Particle
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This note was uploaded on 05/20/2010 for the course EVEG 3110 taught by Professor Malone during the Spring '10 term at LSU.

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L_11_Disinfection_and_Chlorine_upgraded_06 - Disinfection...

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