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Iron Salts

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Iron Salts

Iron salts (e.g. ferric chloride or sulfate) have proven to be a trusted solution for managing hydrogen sulfide in wastewater systems. They offer reliable, long-term control for both gravity and forcemain collection systems, as well as solids processing, transfer lines, and anaerobic digesters.

In addition to hydrogen sulfide control, iron salts can enhance your wastewater treatment process by improving clarification, supporting phosphate removal, preventing struvite formation, and boosting solids dewatering and anaerobic digester performance.

Our experts at USP Technologies can help you determine the optimal dosing levels for your unique system. Whether using ferrous or ferric iron, we’ll guide you to achieve the best results, with practical dose ratios tailored to meet your needs:

Ferrous iron: Typical practical doses range from 2–6 lbs Fe²⁺ per lb H₂S
Ferric iron: Typical practical doses range from 1.5–4 lbs Fe³⁺ per lb H₂S

USP Technologies has a well-supported supply of various iron types for wastewater treatment: ferric chloride, ferrous chloride, ferric sulfate, ferrous sulfate. Learn more about how we approach selecting which iron salt is best for you: Reliability in the Face of Supply Chain Disruption – USP Technologies

Connect with USP Technologies today and see how our customized iron salt solutions can elevate your system’s performance, reducing sulfide and phosphate levels while minimizing operational challenges.

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Additional Resources:

A comprehensive laboratory assessment of the effects of sewer-dosed iron salts on wastewater treatment processes – ScienceDirect

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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