Lecture_7_ESM214_05

Lecture_7_ESM214_05 - ESM 214 Winter 2005 Lecture 7:...

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ESM 214 Winter 2005 Lecture 7: Biological Treatment
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Biological Treatment Transform organics into end products New biomass (sequestration) – CO 2 , H 2 O, nutrients, gas and other Capture solids in biological floc Removes trace organics
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Biological Trmt Processes Activated sludge (in secondary treatment) Fixed film treatment (attached growth) Trickling filters Rotating biological contactors Aerobic digestion Anaerobic Digestion Lagoons Aerated Non-aerated
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Biological Reactions in Aerobic Treatment Oxidation Synthesis “food”(COHNS) + O 2 + energy C 5 H 7 NO 2 Endogenous respiration C 5 H 7 NO 2 + 5 O 2 5CO 2 + 2H 2 O + NH 3 “food” (COHNS) + O 2 CO 2 + H 2 O + NH 3 + products + energy microbes microbes overall “food” (COHNS) + O 2 CO 2 + H 2 O + NH 3 + products + C 5 H 7 NO 2 microbes
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Stoichiometry in Biological Trmt Useful in estimating proportions: 1. Yield = Y = 2. Oxygen demand 3. Nutrient requirements ) g ( substrate ) g ( biomass
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This note was uploaded on 08/06/2008 for the course ESM 214 taught by Professor Holden during the Spring '05 term at UCSB.

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Lecture_7_ESM214_05 - ESM 214 Winter 2005 Lecture 7:...

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