Page 498 - Air Pollution Control Engineering

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470 Lawerence K. Wang et al.

Table 2
Listing of Destruction Efficiencies of ICEs for SVE Systems
Discharge concentration
Inlet concentration after catalytic converter Removal
Volatile organic compound (ppm) (ppm) efficiency (%)
Total hydrocarbon (THC) 26,000 140 99.46
38,000 89 99.76
68,000 160 99.72
200,000 39 99.98
318,832 16 99.99
Benzene 380 0.8 99.79
470 1.8 99.66
730 0.056 99.99
785 0.63 99.92
960 0.024 99.99
a
995 ND (<10 ppb) 99.99
1,094 67 93.88
1,400 0.13 99.99
Total xylenes 320 0.13 99.96
360 0.080 99.98
Xylenes 114 0.7 99.39
1,550 <11.5 ppb 99.99
Ethylbenzene 18 <0.5 —
77 0.062 99.92
91 ND (0.02) 100.00
Total petroleum hydrocarbon 49,625 225 99.56
(TPH) non-methane
TPH 30,500 1.4 99.99
34,042 14.5 99.95
39,000 4.7 99.99
65,450 30 99.95
Toluene 400 1.1 99.73
720 0.024 99.99
840 0.020 99.99
Methane HC 741 109 86.29
a Nondetectable.
Source: ref. 23.

99.9% over 36 h of operation. The remediation process achieved no detection for benzene,
toluene, and xylenes and 82 ppm oil in the soil.
Robert Elbert & Associates used thermal vacuum spray aeration/compressive ther-
mal oxidation system for remediating groundwater contaminated with gasoline. An
ICE system was incorporated in the system to control the air emission. The system
heated the water to 110 ºF and applied to 12'' of vacuum to preferentially evaporate the
gasoline and extract the gasoline vapor, respectively. The extracted vapor was then sent
to ICE system to control air emission stream. The remediation process could strip and