Project Description: The Poipu Water Reclamation Facility (WRF) is permitted at a capacity of 1.0 MGD and consists of the following major treatment components:

• Influent pump station
• Headworks consisting of influent screening
• Moving bed bioreactor (MBBR) treatment basins
• Circular secondary clarifiers with return activated sludge (RAS)/waste activated (WAS) sludge pumps
• Cloth media filtration
• In-channel ultraviolet disinfection (UV)
• Effluent disposal to an onsite injection well or to the adjacent golf course lake
• Waste activated sludge holding tank
• Centrifuge dewatering with haul off to landfill

Valentine performed the plant capacity analysis to aid California Water Service Co. in determining the necessary upgrades required for near term and long-term flow increases to the WRF.   Valentine provided the following services:

• Determination of influent flow and loading basis of design
• Analysis of existing unit process treatment capacities using Biowin, state point analysis and spreadsheet modeling
• Condition assessment of unit process equipment
• Development of unit process expansion options to achieve incremental increases in capacity
• Development of conceptual site layouts and probable opinion of construction costs for expansion options
• Preparation of a capacity evaluation report