MembraneHW - ENV 6015 Membrane Problem Set 1. A membrane...

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ENV 6015 Membrane Problem Set 1. A membrane pilot study using one spiral wound membrane with a surface area of 70 ft 2 was conducted on a ground water source. The results of the study are given in Table 1. The data is the permeate concentration vs. percent recovery and operating pressure. The feed water quality is also given. Construct isopleths for the % rejection vs.% recovery and pressure drop for each solute. Comment on the effect of pressure drop and percent recovery on the rejection with respect to the diffusion theory. Calculate the mass transfer coefficients for both water and each solute. Table 1. Product Flow, and Permeate Water Quality as a Function of Feed Pressure and % Recovery Pressure, psi % Recovery Product flow GPM Total hard mg/L as CaCO 3 TDS mg/L THMFP ug/L 80 50 .612 109 146 10 80 66 .617 128 198 14 80 75 .617 135 205 17 80 90 .621 195 259 28 90 50 .690 98 137 9 90 66 .639 135 171 15 90 75 .694 135 180 12 90 90 .695 135 193 17 100 50 .769 101 137 11 100 66 .771 124
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This note was uploaded on 01/14/2012 for the course ENV 6015 taught by Professor Taylor during the Fall '11 term at University of Central Florida.

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MembraneHW - ENV 6015 Membrane Problem Set 1. A membrane...

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