Factors influencing the economics of a commercial slurry phase biological treatment process
- OHM Remediation Services Corp., Findlay, OH (United States)
OHM Remediation Services Corp. (OHM) has completed the full-scale slurry-phase biological treatment of 10,500 cubic yards of RCRA-K001 wastes at the Southeastern Wood Preserving Superfund site in Canton, Mississippi. The polycyclic aromatic hydrocarbon (PAH) concentration in the untreated material ranged from 8,000 mg/kg to 12,000 mg/kg dry-weight. A 95 percent reduction in total PAH concentration was achieved following treatment. Slurry preparation consisted of soil screening and classification to remove debris and prepare the material for slurry-phase biological treatment. The slurry was biologically treated in one of four 210,000 gallon steel tanks for 8 to 12 days. At the completion of biological treatment the slurry was transferred to the slurry dewatering unit for removal and recycling of the excess water to the slurry preparation system. The slurry preparation, slurry biological treatment, and dewatering process unit costs were $50 to $60, $40 to $55, and $20 to $30, respectively, for a cost of $110 to $135 per ton for the full-scale, slurry-phase biological treatment system. Total project costs including design engineering, treatability and pilot-scale testing, site closure, and project administration is $190 to $200 per ton of material treated. The total project cost per ton of material treated, obtained from a full-scale, operating treatment system, supports slurry-phase biological treatment as an economic remedial alternative for RCRA-listed K001 material. Three, variables had a significant impact on the total project cost of the treatment system. Treatment costs were affected by the slurry-phase reactor solids concentration, reactor batch treatment time, and the percentage of material treated in the soil washing/slurry preparation system. The impact of each of these variables on project cost will be presented.
- OSTI ID:
- 122483
- Report Number(s):
- CONF-950679-; TRN: IM9547%%63
- Resource Relation:
- Conference: Hazmat International `95: 13. annual international environmental management and technology conference and exhibition, Philadelphia, PA (United States), 14-16 Jun 1995; Other Information: PBD: 1995; Related Information: Is Part Of Haz Mat `95 international. Technical papers of thirteenth annual environmental management and technology conference/international: Proceedings; PB: 227 p.
- Country of Publication:
- United States
- Language:
- English
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