Project Summaries
Industrial - Chemical Plant
Facility: International chemical specialties plant Location: Northeast Waste: DDT contaminated sewer sediments Classification: Hazardous Requirements: Regulatory mandated removal. Solution: Creative Waste Management utilized hazardous waste trained commercial divers to vacuum contaminated sediments from over two miles of sewer under full flow conditions. Sediments removed by the divers were processed by Creative Waste Management using a unique combination of vibratory shaker screens, a high capacity inclined plate clarifier, and a 90 cubic foot high pressure recessed chamber filter press. Dewatered solids were analyzed and disposed of at one of two facilities depending on the concentrations of DDT. A total of 5,500,000 gallons of wastewater were treated and returned to the sewer system in conformance with the discharge standards established for the project. Strict enforcement of dive safety compliance resulted in an exceptional safety record.
Municipal - Wastewater Treatment PlantLocation: Southeast Waste: PCB contaminated digester sludge Classification: Hazardous Requirements: Regulatory mandated removal. Solution: The CWM team removed and dewatered more than 1 million gallons of sludge from two contaminated digesters. The filter cake was safely transported to a licensed hazardous waste disposal site in Alabama. We further treated, then returned a total of 900,000 gallons of filtrate to the headworks of the wastewater treatment plant. Upon completion, we provided written certification that all filtrate returned to the treatment plant contained less than 1 ppb of PCB's.
Utility - Power PlantFacility: Coal-fired electrical generating station Location: Midatlantic Waste: Desulfurization sludge and ash Source: Flue gas scrubber Emergency Situation: New high-efficiency scrubber captured finer and greater amounts of sulfur compounds than expected, overloading holding basins. Requirements: Correct problem without disrupting plant operations. Solution: Responding to an emergency request, our team inspected the site, installed a complete mobile treatment system over a weekend, and began dewatering settled sludge (at 10-20% solids) from the holding basins. The system dewatered the sludge substantially faster than it was produced, averting a potential crisis. Later, we designed and installed a permanent dewatering facility. The system continuously dewaters settled sludge to produce a 55-60% solids filter cake which is economically hauled to an approved landfill.
MarinaFacility: Public Marina Location: Northeast Sediment: Organic Silt Requirements: Remove sediments. No disposal location in vicinity, so sediment must be hauled. Solution: CWM dredged over 33,000 cubic yards of sediment into barges for shipment to an off-site disposal facility. We used a patented dredging system in order to dredge the thickest material. In addition, with over 35 years experience in the industry, we used our unique sediment thickening methods to maximize the solids in the barges and minimize the number of shipments.
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