HW4 2009 Solution - negligible(unhindered settling Type II Flocculant Particle Settling Settling of particles in low concentration but with

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CEE 4310 WATER QUALITY ENGINEERING SPRING 2009 Problem 1 Solution Problem 2 Solution It is when λ is maximum. C / C 0 % Removal 0.317 68.3 0.105 89.5 0.037 96.3 0.017 98.3 0.026 97.4 0.033 96.7 0.064 93.6 0.074 92.6 Problem 3 Solution (a) R = v t /V 0 (b) To decrease the overflow velocity by a factor of n (= number of trays) (c) Difficulty in collecting settled particles Problem 4 Solution (a) Type I. Discrete Particle Settling: Settling of discrete particles in low concentrations, with flocculation and other interparticle effects being
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Unformatted text preview: negligible (unhindered settling) Type II. Flocculant Particle Settling: Settling of particles in low concentration but with flocculation. As coalescence occurs particle masses increase and the particles settle more rapidly (d) Higher removal for 2 basins in series v t /v R (single) R (series) 0 0.00 0.00 0.1 0.09 0.09 0.2 0.17 0.17 0.3 0.23 0.24 0.4 0.29 0.31 0.5 0.33 0.36 0.6 0.38 0.41 0.7 0.41 0.45 0.8 0.44 0.49 0.9 0.47 0.52 1 0.50 0.56...
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This note was uploaded on 06/29/2009 for the course CEE 4310 taught by Professor Kim during the Spring '09 term at Georgia Institute of Technology.

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