Iron and Manganese Removal: Treating the Water of Roswell, Georgia

When the City of Roswell, Georgia, planned its new water treatment facility, it needed to address high levels of iron and manganese. Find out how a customized treatment system solved the problem.

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Iron and Manganese Removal: Treating the Water of Roswell, Georgia
When the City of Roswell, Georgia, planned a new treatment plant, it turned to AdEdge Technologies to design a system to remove iron and manganese.

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In late 2011, the United States Army Corps of Engineers approved plans to install a new well and build a new water treatment facility for the City of Roswell, Georgia. Barlovento LLC was selected during a competitive bidding process to provide an iron and manganese removal system for the new water supply. AdEdge Water Technologies LLC was contracted to design, manufacture and commission an iron and manganese treatment plant for the city. The raw water had an iron concentration of >0.8 mg/L and a manganese concentration of >0.1 mg/L, exceeding the Environmental Protection Agency's standards of 0.3 mg/L iron and 0.05 mg/L manganese.

The AdEdge treatment system was designed to treat up to 400 gpm to keep the water supply wells at EPA standards. The treatment system was packaged in a compact, skid-mounted unit, AdEdge model APU26-7272CS-2-AVH, using two 72-inch-diameter carbon steel vessels in parallel. Each vessel was loaded with AdEdge GS+ media and appropriate support media. The ADGS+ media is a proven manganese-dioxide coated media used for the removal of arsenic, iron, manganese and hydrogen sulfide.

Features:

  • Prechlorination using sodium hypochlorite to oxidize the iron and manganese for optimal removal.
  • Sequestering chemical feed pumps inject ortho-polyphosphates downstream of the APU system to act as a corrosion inhibitor in the distribution piping.
  • Post-chlorination for final disinfection in the distribution system.
  • System is equipped with inline turbidity, pH, and chlorine influent and effluent monitoring equipment.
  • Differential pressure monitoring, local pressure gauges, flow sensors and a central hydraulic panel.
  • System control provided by PLC and HMI user interface screen. PLC provides control of well pumps and chemical dosing pumps, as well as remote operator plant control.

The AdEdge treatment system was commissioned in late 2012. The system has consistently met effluent treatment goals of 0.3 mg/L for iron and 0.05 mg/L for manganese since it began operation.

About AdEdge Water Technologies
Founded in 2002 and headquartered just north of Atlanta, Georgia, AdEdge Water Technologies specializes in the design, development, fabrication and supply of packaged treatment solutions, specialty medias, innovative technologies and membranes that remove contaminants from process or aqueous streams. AdEdge has extensive experience in the removal of arsenic, iron, manganese, hydrogen, sulfide, fluoride, nitrate and uranium from water. For more information, call 866/823-3343 or visit www.adedgetech.com.



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