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Civil Engineering
CSTR CSTR Q Q PFR PFR

CSTR CSTR Q Q PFR PFR

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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0.5Q CSTR CSTR Q Q PFR 0.5Q PFR Figure 1 (a). Reactors in parallel Figure 1 (b). Reactors in series
Transcribed Image Text:0.5Q CSTR CSTR Q Q PFR 0.5Q PFR Figure 1 (a). Reactors in parallel Figure 1 (b). Reactors in series
You are considering available options to meet new effluent quality standards for a particular contamination being treated at your plant. Currently you are operating with two reactors connected in parallel as shown in Figure 1(a). One reactor is a plug flow reactor (PFR), the other is a completely stirred tank reactor (CSTR). The following information is available: Design flow, Q: 60 L/min Influent concentration, Co: 10 mg/L Order of reaction: 1st Order Decay constant, k: 0.25 min! Volume of PFR, Vp: 360 L Volume of CSTR, Vc: 2280 L Using the above information, determine: a. The residence time, t, in each reactor; b. The effluent concentration from the PFR; C. The effluent concentration from the CSTR. d. The resulting effluent quality with the two reactors in parallel. You want to investigate whether operating these reactors in series will allow the required effluent standard of 0.25 mg/L to be met. You are therefore proposing the new configuration for the reactors shown in Figure 1(b) Determine whether the plant will be able to meet the effluent standards.
Transcribed Image Text:You are considering available options to meet new effluent quality standards for a particular contamination being treated at your plant. Currently you are operating with two reactors connected in parallel as shown in Figure 1(a). One reactor is a plug flow reactor (PFR), the other is a completely stirred tank reactor (CSTR). The following information is available: Design flow, Q: 60 L/min Influent concentration, Co: 10 mg/L Order of reaction: 1st Order Decay constant, k: 0.25 min! Volume of PFR, Vp: 360 L Volume of CSTR, Vc: 2280 L Using the above information, determine: a. The residence time, t, in each reactor; b. The effluent concentration from the PFR; C. The effluent concentration from the CSTR. d. The resulting effluent quality with the two reactors in parallel. You want to investigate whether operating these reactors in series will allow the required effluent standard of 0.25 mg/L to be met. You are therefore proposing the new configuration for the reactors shown in Figure 1(b) Determine whether the plant will be able to meet the effluent standards.
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