Thesis - faculty.ait.ac.th - Asian Institute of Technology

Table F-5 Pilot Scale Study on Ammonia Stripping with Varying Contact Time (Reactor
Volume 40 L, pH 11-12, Velocity Gradient 2,850 s -1 )
Initial
Contact Time
Concentration 1 h 2 h 3 h 4 h 5 h
(mg/L) NH3 R NH3 R NH3 R NH3 R NH3 R
(mg/L) (%) (mg/L) (%) (mg/L) (%) (mg/L) (%) (mg/L) (%)
1,160 722 38 487 58 235 80 202 83 104 91
1,473 902 22 675 42 375 68 266 77 140 88
* R – Ammonia Removal Efficiency
Table F-6 Verification of the Optimum Parameters for the Ammonia Stripping Studies
with Varying Ammonia Concentration in the Leachate (Velocity Gradient: 2,850 s -1 , pH:
11-12, Contact Time: 5 h)
Sample No.
Ammonia Concentration (mg/L)
Initial Final
Removal Efficiency (%)
1 1,473 140 90
2 1,546 148 91
3 1,310 151 88
4 1,753 218 88
5 1,546 241 84
6 1,414 227 84
7 1,358 202 85
8 1,277 210 84
9 1,369 218 84
10 1,442 238 83
11 1,389 179 87
12 1,490 162 89
13 1,532 218 86
14 1,473 140 90
15 1,546 148 91
Average 1,455 196 86
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