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A wastewater containing 150 mg/l chlorobenzene is treated in a laboratory adsorption unit using a PVC...

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Chemistry

A wastewater containing 150 mg/l chlorobenzene is treated in alaboratory adsorption unit using a PVC column, 1.0 inch internaldiameter, to an effluent concentration of 15 mg/l . Service times,and throughput volumes at specified depths and flowrates associatedwith a breakthrough concentration of 15.0 mg/l are given in table1.

table1 : result of adsorption column experiment

Loading rate,gpm/ft2   Bed depth,ftThroughput volume, gal Time, hr

loading rate

gpm/ft2

bed depth

ft

throughput volume,

gal

time,

hr

2.53.0810980
5.017502230
7.029103440
5.03.0605420
5.014951000
9.031802185
7.55.01183452
9.027811075
12.040001564

1) is the attainable effluent concentration satisfactory from aregulatory standpoint?

2) determine the Bohart-Adams constant ( K,N0 andx0) for each hydraulic loading.

3)base on data derived above design an adsorption column 2.0 ftinternal diameter to treat a wastewater flow 5,000 gal/d containing150 mg/l of CB. The attainable effluent concentration is 15 mg/land it is desired to operate the column for 90 days(8 hourslday,7days/week) before reching exhaustion.

4)calculate the yearly carbon requirements in cubic feet.

Answer & Explanation Solved by verified expert
4.3 Ratings (790 Votes)
a No According to regulatory limits the concentration ofchlorobenzene should not be more than 01 mgl whereas in theeffluent it is 15 mgl therefore it is not    See Answer
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