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Actinomycetes and Filamentous Bacteria

Actinomycetes and Filamentous Bacteria. Filamentous Prokaryotes. Actinomycetes Nocardia and related Acid-fast Organisms. Actinomycetes. Actinis: Ray Mycetes: Fungi Initially thought to be fungi; now known to be prokaryotes Diverse group of organisms Acid fast. Acid-Fast.

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Actinomycetes and Filamentous Bacteria

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  1. Actinomycetes and Filamentous Bacteria

  2. Filamentous Prokaryotes • Actinomycetes • Nocardia and related Acid-fast Organisms

  3. Actinomycetes • Actinis: Ray • Mycetes: Fungi • Initially thought to be fungi; now known to be prokaryotes • Diverse group of organisms • Acid fast

  4. Acid-Fast • Organisms resistant to normal gram staining • Mycolic acid in walls • Special staining procedure: Acid-fast stain

  5. Environmental Importance of Actinomycetes • Mineralization of organic matter in soil • Antibiotic production • Bulking and foaming in wastewater treatment plants

  6. Wastewater Treatment Plants • Primary treatment • Physical treatment • Removal of grit • Settling of particulate matter • Secondary treatment • Biological treatment • Microorganisms mineralize organic matter

  7. Process Parameters • Suspended Solids • Mixed-liquor suspended solids (MLSS) • MLVSS • Generally can be used as a measure of microbial biomass. • BOD • Biochemical Oxygen Demand • Oxygen consumed in mineralization of organic carbon • Measure of food available for microbes

  8. F:M • Food to microorganism ratio • Approximated by MLVSS:BOD

  9. Bulking and Foaming • Filamentous Bacteria in Activated Sludge Treatment Plants

  10. Activated Sludge and Flocs

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