System Solves Odor Problems in Florida Community

Jan. 27, 2016
The hydrogen sulfide removal system reduced the odor-causing contaminant to a non-detectable level
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In January 2010, AdEdge Water Technologies LLC was contacted by Aqua Utilities Florida to provide a hydrogen sulfide removal system for the Lake Josephine Community located in Highlands County, Fla.

The existing water system consisted of two wells feeding into a centralized distribution system with a maximum capacity of 230 gal per minute (gpm) being consumed by a population of 1,250 people. The raw water well water contains high levels of hydrogen sulfide, which produced objectionable odors in the customers’ tap. The treatment goal for the Lake Josephine system was to reduce the levels of hydrogen sulfide to the non-detectable odor threshold <0.05 mg/L.

Treatment System

The AdEdge treatment system features a skid-mounted AD26 oxidation and filtration package unit sized for a maximum design flow of 230 gpm. The model APU26-4260CS-3-AVH utilizes AdEdge AD26 media in a three-vessel carbon steel configuration in parallel.

The system is equipped with automated control valves and harness, central control panel with programmable logic controller and a color user interface screen. System features also include differential pressure switches, control panel and local gauges, flow sensors and totalizers, and a central hydraulic panel with sample ports for a complete functioning packaged unit. Each 42-in. diameter treatment vessel contains 30 cu ft of AdEdge AD26 oxidation/filtration media. AdEdge AD26 is a NSF 61 certified manganese dioxide media.

The AdEdge hydrogen sulfide removal system fully integrates with the existing chlorine chemical feed system to oxidize the sulfide ion to elemental sulfur, which precipitates out of solution and is then filtered through the media.

In addition to the hydrogen sulfide treatment system, AdEdge is providing a backwash recycle system. The backwash recycle system reclaims 100% of the backwash wastewater and removes the captured suspended solids as a semi-solid sludge that can be disposed of in a non-hazardous landfill. Backwashing of the treatment system occurs two or three times a week depending on the water usage.

Performance

The system was started up and commenced in November 2011. Since the system began operation, the hydrogen sulfide concentration has been reduced to below the non-detectable odor threshold of <0.05 mg/L.

Richard J. Cavagnaro is marketing coordinator for AdEdge Water Technologies LLC. Cavagnaro can be reached at [email protected] or 678.835.0052.

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