5. A pilot column breakthrough test has been performed with a wastewater that has a trichloroethylene (TCE) concentration of 400 mg/L as TOC (total organic carbon). Pertinent design data are ID = 0.095 m, length = 1.04 m, mass of carbon = 2.98 kg, liquid flow rate = 17.42 L/hr, unit liquid flow rate = 0.679 L/s-m², and packed carbon density = 401 g/L. The breakthrough data are given in Table 1. Determine: a. The liquid flow rate in bed volumes per hour and the volume of liquid treated per unit mass of carbon using an allowable breakthrough concentration of 35 mg/L of TOC. in kg/kg. b. The kinetic constants ki in L/s-kg and qo Table 1. Throughput Volume Effluent TOC (mg/L) (L) 15 69 159 273 379 681 965 1105 1215 1287 1408 1548 12 16 24 16 16 20 28 32 103 211 350 400

5. A pilot column breakthrough test has been performed with a wastewater that has a trichloroethylene (TCE) concentration of 400 mg/L as TOC (total organic carbon). Pertinent design data are ID = 0.095 m, length = 1.04 m, mass of carbon = 2.98 kg, liquid flow rate = 17.42 L/hr, unit liquid flow rate = 0.679 L/s-m², and packed carbon density = 401 g/L. The breakthrough data are given in Table 1. Determine: a. The liquid flow rate in bed volumes per hour and the volume of liquid treated per unit mass of carbon using an allowable breakthrough concentration of 35 mg/L of TOC. in kg/kg. b. The kinetic constants ki in L/s-kg and qo Table 1. Throughput Volume Effluent TOC (mg/L) (L) 15 69 159 273 379 681 965 1105 1215 1287 1408 1548 12 16 24 16 16 20 28 32 103 211 350 400

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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Storm Sewers and Detention

The storm drains system transports rainwater or stormwater and other runoff from roads, parking lots, and roof downpipes directly to nearby creeks, rivers, or the sea without any treatment.

Question

5. A pilot column breakthrough test has been performed with a wastewater that has a trichloroethylene
(TCE) concentration of 400 mg/L as TOC (total organic carbon). Pertinent design data are ID =
0.095 m, length = 1.04 m, mass of carbon = 2.98 kg, liquid flow rate = 17.42 L/hr, unit liquid flow
rate = 0.679 L/s-m², and packed carbon density = 401 g/L. The breakthrough data are given in Table
1. Determine:
a. The liquid flow rate in bed volumes per hour and the volume of liquid treated per unit mass of
carbon using an allowable breakthrough concentration of 35 mg/L of TOC.
b. The kinetic constants ki in L/s-kg and qo in kg/kg.
Table 1.
Throughput Volume
(L)
15
69
159
273
379
681
965
1105
1215
1287
1408
1548
Effluent TOC
(mg/L)
12
16
24
16
16
20
28
32
103
211
350
400

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