Waterborne Diseases Water Quality Coliform Counts Lactose gas
Waterborne Diseases • • • Water Quality Coliform Counts Lactose + gas Extinction Dilution Most Probable Numbers – MPN • EMB agar
Fecal Coliform • Membrane Filter • E. coli counts • Enzyme substrate • MUG • IBGD • 100 ml • +/- Test
Wastewater • 100 -200 gal/day/person • BOD • Biochemical Oxygen Demand • Water Quality Measure?
Sewage Treatment • • Primary Treatment Settling Tank Sludge Septic Tank
Secondary Treatments Aerobic • Activated Sludge • Trickling Filters
Anaerobic Treatment • Sludge Digesters • Methane • Vented or Used?
Other Treatments • Biodiscs • Chlorine, Ozone, UV • Tertiary treatment
Drinking Water Purification • • • Potable Water Sedimentation Basin Alum Coagulation Sand Filter Chlorination
Waterborne Diseases • Cholera • Vibrio cholerae • 7 Pandemics 2 Biotypes El Tor & Classic O-1
Legionnaires Disease • Philadelphia 1976 • Legionella pneumophilia • Erythromycin • Complex Nutritional requirements • Pontiac Fever
Protozoan Diseases • • Giardia lamblia Cysts 97% surface water Cryptosporidium parvum • 1993 Milwaukee • 403, 000 cases
Other Waterborne Diseases • • Viruses Polio, Hepatitis Typhoid Fever Salmonella typhi Entamoeba histolytica Amoebic Dysentery Shigella dysenteriae
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