Application: Sulfur-OX3
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Culligan Aquasential Select Plus & Select Series Iron-OX5 & Sulfur-OX3 Water Filters 01040683
Appendix B - Application: Sulfur-OX3
Water Quality
Verify that untreated water hydrogen sulfide, pH, and alkalinity levels are within recommended limits.
Hydrogen Sulfide
Hydrogen Sulfide usually occurs naturally in well water as a dissolved gas. It is typically the result of organic
decomposition. It has a characteristic “rotten egg” odor and can usually be noticed at a concentration above .50 ppm.
In some cases hydrogen sulfide can be caused by Sulfate Reducing Bacteria (SRB). This system is not designed to
treat hydrogen sulfide caused by SRB. The Culligan Analytical Laboratory can test for both of these contaminants.
Principles of Operation - Sulfur-OX3 Aeration System
The Culligan Sulfur-OX3 system utilizes the principle of oxidation to convert hydrogen sulfide to sulfate or a filterable
particle, resulting in the reduction of hydrogen sulfide odor. The process is accomplished by water entering the filter
tank being immediately exposed to an “airhead” at the top of the filter tank to begin the oxidation process. The filter
media acts a catalyst to help complete the oxidation reaction and retain precipitated particles.
Periodic backwashing purges the accumulated particles from the filter tank and reclassifies the media bed. After
the backwash cycle the Sulfur-OX3 control valve replenishes the airhead in the filter tank during the “Air Draw”
cycle. During this cycle Air is educted into the filter tank in sufficient volume for the required airhead. During the
“Rinse” cycle the air charge is compressed and stored within the filter tank and the filter media is rinsed prior to the
system returning to the service cycle.
CAUTION!
Do not use where the water is microbiologically unsafe or with water of unknown quality without
adequate disinfection before or after the unit.
Pressure
- Although the system is designed and tested to operate at a maximum pressure of 60 psi, it is not expected
that the system should be exposed to such pressure for extended operation. Culligan recommends following the
IAPMO Uniform Plumbing code section 806.2 by installing a Pressure Regulating Valve if the water pressure is
greater than 60 psi. Operating on pressures above the UPC for extended periods of time can increase the service
frequency and failure of replacement parts. On a private water system, make sure the minimum pressure (when the
pump starts) is greater than 20 psi (140 kPa).
CAUTION!
The use of a pressure reducing valve may limit the flow of water in the household.
Temperature
- Do not install the unit where it might freeze, or next to a water heater or furnace or in direct sunlight.
Outdoor installation is not recommended, and voids the warranty and UL certification.
Operating Conditions
The hydrogen sulfide limit listed below reflects the maximum limit that was tested without
any interference from other contaminants in the influent water.
In reality, however, we know that other contaminants may be present that could limit the filter’s ability to remove
hydrogen sulfide. In some cases, individual sellers of this equipment have had success removing other concentrations
of contaminants such as ferrous iron. If you are considering the installation of this system for the removal hydrogen
sulfide and iron is present we recommend that you consult Culligan for proper application.
This system should not be used for the treatment of odors caused by sulfate reducing bacteria (SRB).
