CIWI insights for sustainable impact

Yes, CIWI achieves the same removal efficiency as conventional coagulants, measured in kg of contaminants removed per kg of dosed active product. The system produces iron-based coagulants (with the option for aluminium-based production), achieving the same removal performance for contaminants such as phosphate, organic substances, sulfides, and heavy metals.

CIWI replaces the purchase of chemicals with its own production, using salt, metal, and electricity. These raw materials have a significantly lower cost price compared to bulk chemicals such as FeCl₃, FeCl₂, and NaOH, which entail costs such as industrial processing, logistics, and supplier margins.

A typical FeCl₃ solution (~40%) consists of only about 14% active iron particles (Fe) that contribute to the treatment, and the remaining 86% of non-functional mass (primarily water and counterions). This means that roughly eight times as much mass is transported as is actually required for active material. CIWI eliminates this inefficiency by producing the active coagulant directly on-site from steel (>99% Fe), thereby avoiding the transport of non-functional mass and reducing logistical and handling costs.

Conventional chemicals such as FeCl₃ and NaOH are characterized by high concentrations, posing chemical hazards to users, during storage, and transport. CIWI produces these chemicals on-site in low concentrations (typically <2%), thereby addressing chemical hazards at the source. This significantly reduces the severity of the hazards while maintaining the same purification performance.