IAI installed a geotextile tube wall, 11 FT tall and 1,900 FT long, along the perimeter of a coal ash pond, for this project. The geotextile tubes that made up the wall were filled with dredged coal ash from the pond, conditioned with polymer, and pumped into the geotextile tubes at a rate of approximately 1,500 GPM. IAI's team devised a method for … [Read more...]
Coal Ash Dredging, Dewatering & Water Treatment
IAI provides coal ash (CCR) dredging, dewatering and water treatment services to coal-fired electricity generation plants throughout the U.S. Below are some examples of our coal ash dredging and dewatering projects.
In 2015, the Lower Pond CCR Dredging Project was performed at a power generation station in Lansing, IA. IAI was selected to provide dredging and bypass pumping operations services for the project. IAI utilized our 8-in. diameter auger dredge to remove about 2,000 cubic yards of coal combustion residuals (CCR, or coal ash) from the Lower Pond, to prepare … [Read more...]
IAI was selected by We Energies to remove and dispose of accumulated sediment and coal combustion residuals (CCR) from a pond at the Presque Isle Power Plant in picturesque Marquette, Michigan. IAI provided general contractor services, and self-performed the geotextile tube dewatering portion of the work. Approximately 4,000 cubic yards of coal … [Read more...]
IAI utilized an 8 inch diameter auger dredge with an 8 inch inline booster pump to remove 20,000 cubic yards of solidified coal ash from a runoff water management pond at a coal fired electricity generation plant in Mississippi. Runoff from an adjacent coal ash pile had carried ash waste into the pond and had reduced the depth of the pond. A temporary … [Read more...]
IAI utilized an 8 inch diameter auger dredge to remove 25,000 cubic yards of coal ash (or fly ash) sludge from an industrial settling pond at a coal-fired electricity generation plant in Lumberton, North Carolina. The coal ash was dredged directly into geotextile tubes, which were deployed around the perimeter of the same pond. The filled geotextile tubes, … [Read more...]
IAI was responsible for dredging approximately 20,000 cubic yards of coal ash (or fly ash) from a pond at a power plant in Tonawanda, New York. Hydraulic dredging of the 7.3 acre pond was completed over a 5 week period. The dredged material was dewatered using a Total Clean System. Effluent from the Total Clean unit was injected with polymer, then allowed to … [Read more...]