Arizona Waste Water Treatment Plant Expansion

Project goal: To design an expansion of the Greenfield Water Reclamation Plant that doubles processing capacity, increases efficiency, and minimizes expansion cost while maintaining the quality of the discharged water. The facility is rated at an average daily flow of 16 million gallons per day, or MGD, with a maximum hourly flow of 48 MGD. The expansion designed will handle an average daily flow of 30 MGD and a maximum hourly flow of 90 MGD. The plant’s current design allows it to meet current water quality standards, but its efficiency was improved during this expansion by making the facility more user-friendly, and by reducing the maintenance costs. The team used a decision matrix to find an optimum design for each of the three objective areas, and suggested additional water-treatment technologies that could make the facility easier to operate.