03-03 - Announcements Problem set 4 due this Friday, March...

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Announcements • Problem set 4 due this Friday, March 5 • Problem set 5 due next Friday, March 12 – Has typos– take new assignment • Quiz on Monday, March 8: – Redox reactions (no balancing) – Energetics – Substrate utilization kinetics – COD, BOD, NOD etc.
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Course Evaluations • More practice problems • People like videos • Lectures now posted in PDF and PP format • Office hours posted on Blackboard • You should see me when I am actually bored…
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A SIMPLE MODEL FOR DISSOLVED OXYGEN IN A STREAM: Purpose - to illustrate basic modeling concepts which can be applied to predict the movement and fate of contaminant. - Keep in mind D.O. is used as an example, but the principles can apply to any pollutant. - The equations developed are general - i.e., as applicable to reactors as they are to streams and lakes within the constraints of the simplifying assumptions we will make. We will initially consider two idealized types of systems: a. complete mix system b. plug flow system (with no mixing) [We'll deal with more complicated flow regimes later in the course] (Or a well-mixed lake) To approximate the lake To approximate the stream
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Parameters : Flow rate_____________,BOD concentration__________, Reactor volume_________, D.O. concentration__________. CMF L O = input, L = effluent L O L L C O = input, C = effluent C O C C Completely mixed means that the concentration in the reactor = concentration in the effluent . I. Complete Mix Model schematic Nomenclature CSTR or - complete mix flow reactor - continuous flow stirred reactor Q Q V Q V
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Objectives : Given: Input BOD_________ & D.O. conc. _________ Predict: L and C in reactor (or pond) effluent.
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This note was uploaded on 04/13/2010 for the course CEE 3510 taught by Professor Lion during the Spring '10 term at Cornell University (Engineering School).

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03-03 - Announcements Problem set 4 due this Friday, March...

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