Improved fine loess sand removal - Council Bluffs, Iowa Photograph of HeadCell advanced grit removal units installed at Council Bluffs Water Pollution Control Plant, Iowa A successful project at the Council Bluffs Water Pollution Control Plant, Iowa, replaced an outdated aerated grit basin to improve fine loess sand removal and reduce digester cleaning in the existing tanks and sludge dewatering centrifuge repair. A stacked tray grit separation system was retrofitted into the existing aerated grit basin, significantly reducing overall installed project costs. Washing and dewatering systems provided clean grit suitable for landfill disposal. Improving Fine Loess Sand Removal at Council Bluffs Council Bluffs Water Pollution Control Plant has handled all of the community’s wastewater treatmen

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