Warm Springs, GA Radium Removal - Case study
The City of Warm Springs is a small community of approximately 500 residents located in central Georgia. In 2010, water testing found a radium level between 8 – 11 pCi/L and a Gross Alpha level of 25 pCi/L, both above state and USEPA drinking water regulations of 5 pCi/L and 15 pCi/L respectively. Engineering Management Inc (EMI) conducted a pilot test in late 2010 to test a manganese dioxide coated media for the removal of radium and Gross Alpha Particulate Material from the water After successful piloting of the treatment approach and through an award process, EMI contracted AdEdge Water Technologies to design, manufacture, and commission a radium and Gross Alpha removal system for the City of Warm Springs. The AdEdge WaterPOD delivery option was chosen given cost and schedule advantages over traditional building approaches.The AdEdge radium and Gross Alpha treatment solution consists of a co-precipitation process within a WaterPOD containerized system rated for 250 gpm. The model APU26-4860CS-6-AVH utilizes AdEdge ADGS+ media in a six vessel carbon steel configuration in parallel. THe treatment system is pre-packaged and housed within a 40-foot modularized structure equipped with HVAC, pedestrian doors, ventilation windows, and lighting. The WaterPOD system sits on a concrete foundation. The vessels are loaded AdEdge ADGS+ filtration media for the removal of radium and Gross Alpha. The media is NSF 61 certified for use in potable water. The raw water from the well is injected with sodium hypochlorite and a manganese salt prior to being treated in the treatment vessels for optimal radium co-precipitation and removal. Chemical feed dosing is pulse-controlled by the treatment system’s programmable logic controller (PLC). The feed rate is adjusted based on system flow rates. The PLC performs all automated functions needed for proper operation of the control valves. Backwashing of the treatment vessels occurs 2 or 3 times a week depending on the incoming radium and Gross Alpha levels and the volume of treated water to remove any particulates and to prevent hydraulic channeling. Backwash water is disposed of in a sanitary sewer. The WaterPOD delivery offers significant cost advantages to traditional building and this is the first Georgia installation of this type. The system was started up and put into operation in October 2014.
Client: Warm Springs, GA Date: October 2014 Contaminant: Radium/Gross Alpha Flow Rate: 250 gpm