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