inside of municipal wastwater collection system

Iron Salts

Iron Salts

Iron salts are a proven technology for long-duration hydrogen sulfide control in collection system gravity and forcemains; solids processing units, solids transfer lines and anaerobic digesters. They have been used for over 30 years in hydrogen sulfide control applications and are a well understood technology.

Depending on the wastewater plant unit process configuration, iron salts may also provide improvements in clarification, phosphate removal, struvite control, solids dewatering and anaerobic digester performance.

Theoretical dose ratios of ferrous iron to H2S are 1.75 lbs Fe2+:lb H2S with practical dose rates anywhere from 2 to 6 depending on the application. Theoretical dose ratios of ferric iron to H2S are 1.2 lbs Fe3+:lb H2S with practical dose rates anywhere from 1.5 to 4 depending on the application.

Contact USP Technologies’ iron management experts for help improving sulfide and phosphate levels in your system.

Related Case Studies

Southeast Municipal Wastewater Odor Control

This is a sample 7,800 gallon ferrous chloride (FeCl2) storage and dosing system installation within the collection system of a large Southeast municipality.

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Biosolids Odor Control via PRI-TECH®

A field demonstration was initiated in February 2014 by the Suffolk County Department of Public Works (SCDPW) to quantify the impacts of Peroxide Regenerated Iron-Technology (PRI-TECH®).

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