Effectively precipitates both free and complexed heavy metal ions, including copper (Cu2+), nickel (Ni2+), zinc (Zn2+), lead (Pb2+), cadmium (Cd2+), and hexavalent chromium (Cr6+ after reduction), converting soluble ions into stable insoluble complexes.
Formulated with high-affinity organosulfur compounds and dithiocarbamates that outcompete strong chelating agents (such as EDTA, ammonia, and tartrates), extracting metal ions from complexed matrices where conventional hydroxide precipitation fails.
Generates large, compact metal-complex flocs that settle rapidly in clarifiers or lamella separators. Lowers sludge volume, improves dewatering efficiency in filter presses, and reduces hazardous sludge disposal costs.
Functions effectively across a broad pH spectrum (pH 3.0 to 11.0), reducing the need for excessive caustic soda (NaOH) or lime additions compared to traditional hydroxide precipitation methods.
Consistently lowers residual heavy metal concentrations in treated effluent to sub-ppm levels, ensuring strict adherence to environmental discharge standards and enabling water recycling opportunities.
| Target Heavy Metal Ion | Impact on Water / Environment | Removal & Precipitation Mechanism |
|---|---|---|
| Copper & Nickel (Cu2+, Ni2+) | Inhibits biological treatment plant activity, causes toxic aquatic bioaccumulation, and imparts color to wastewater. | Organosulfur ligands form extremely insoluble metal-sulfide bonds, precipitating copper and nickel rapidly. |
| Hexavalent & Trivalent Chromium (Cr6+, Cr3+) | Hexavalent chromium is highly toxic, carcinogenic, and soluble across all pH ranges, posing severe bio-hazards. | Reducing agents convert Cr6+ to Cr3+, followed by chemical precipitation with metal removers into insoluble hydroxides/sulfides. |
| Lead & Cadmium (Pb2+, Cd2+) | Highly persistent toxic heavy metals subject to strict legal discharge thresholds (typically < 0.1 mg/L). | Polymeric chelating precipitating agents bind lead and cadmium into stable, non-leachable sludge flocs. |
| Zinc & Manganese (Zn2+, Mn2+) | Causes water turbidity, pipe scaling, and ecotoxicity in receiving aquatic ecosystems. | Multi-functional organosulfur formulations form heavy insoluble precipitates that drop out easily in primary clarifiers. |
Whether you need industrial raw materials, water treatment chemicals, or specialty products, our team is ready to help you find the most suitable solution for your business. Contact TFI Chemical today for product recommendations, technical consultation, and reliable nationwide supply.
