Environmental Engineering Reference
In-Depth Information
chapter seven
Polycyclic aromatic
hydrocarbons (PAHs):
improved land treatment
with bioaugmentation
Hap Prichard, Joanne Jones-Meehan, Cathy Nestler,
Lance D. Hansen, William Straube, William Jones,
John Hind, and Jeffrey W. Talley
Contents
7.1
Land-farming background ....................................................................... 217
7.1.1
Polycyclic aromatic hydrocarbons.............................................. 217
7.1.1.1
Chemical structure and source of
contamination.................................................................. 217
7.1.1.2
Toxicity and benzo(a)pyrene toxic
equivalent factors ........................................................... 217
7.1.1.3
PAH bioavailability ........................................................ 220
7.1.1.4
Problem summary .......................................................... 221
7.1.2
Available treatment options ........................................................ 222
7.1.3
Thrust area: early studies ............................................................ 222
7.1.3.1
Solid phase treatments................................................... 224
7.1.3.2
Slurry phase treatment .................................................. 226
7.1.3.3
Performance comparison............................................... 226
7.1.3.4
The flask-to-field selected treatment option
(land farming) ................................................................. 228
7.1.3.5
Microbiological studies.................................................. 228
7.2
Objectives .................................................................................................... 241
7.3
Technical approach .................................................................................... 242
7.3.1
Site description .............................................................................. 242
215
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