Microsoft PowerPoint - Microbiology of Water 1

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Microbiology of Water 1 BY S.M.RAFIGH 2010
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Some Water Factoids Number of people plagued by water shortage: 0.5X10 9 Average gallons used by average American per year: 183 gal. stimated number of people who will be short of water by 025 Estimated number of people who will be short of water by 2025: 2.8X10 9
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The Essentialness of Water Blood in our veins approximates composition of sea water and hydrophilic Concept of nature of biological hydrophobic molecules Water covers 70% of the world These molecules determine shape of biological molecules and thus decide the specificity of all living processes Essential for All living organisms 97% of the water is in the oceans
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We are a burgeoning human population unable to move away from its waste asparagus irrigation
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All Microbes Live in an Aqueous Environment Ecology of aquatic environments is complex Most aquatic environments are teaming with life Microbes have evolved to e in: live in: Saturated salt solutions Below freezing to >110 ° C Waters full of toxic substance , i.e. copper, cyanide, lead, silver, gasoline, oil, benzene, and many others
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Water Quality in TN (2004)* Sources of Agricultural Pollution in Assessed Streams and Rivers Grazing related 60 % Crop related 37 % Intensive Animal Ops. 3 % * TN 305 (b) Report 2004
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Terminology r objectionable free of all (clean) water - Potable material, including pathogens, tastes, odors, colors, toxins, radioactive material, organisms, oils, gases, etc. r salt or sea water - non Fresh r Potable - anything that makes it Non Pollution r the community waste or garbage that Sewage mother nature and we dump onto sewers or land
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Typical Water Quality Standards Drinking Water No coliforms contamination acceptable Recreational water 200 fecal coliforms /100 ml Fish and wildlife habitat 5000 fecal coliforms/100 ml Shellfish 14 fecal coliforms/100 ml
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Most Probable Number 10 ml, 1 ml and 0.1ml of water inoculated in lactose broth Coliforms identified by gas production Refer to tables and determine statistical range of number of coliforms Does not: Detect total number of bacteria Specific pathogens
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Knox County Tennessee Environmental Health Department They come to the farm and take the sample (use 100 ml) st for total coliforms and . coli Test for total coliforms and E. coli Only report negative or positive results ( quite doing counts ~12 years ago) $40.00 fee
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This note was uploaded on 06/21/2011 for the course CHE 774 taught by Professor Prof.rafigh during the Spring '11 term at Sharif University of Technology.

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Microsoft PowerPoint - Microbiology of Water 1 -...

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