As a critical part of a $21.5 million upgrade to its wastewater treatment facilities, the Nebraska city of Grand Island installed a high-performance grit removal system at the treatment plant headworks.The system is designed for redundancy and will remove 95 percent of grit 90 microns and larger. The Advanced Grit Management solution from Hydro International proved its capability in challenging first-flush conditions within days of commissioning.“Our wastewater infrastructure was about 50 years old,” recalls Dr. Jue Zhao, P.E., treatment plant operations engineer. “The city had many issues with the plant and equipment, and we were faced with a growing population
