Thallium Removal From Mining Influenced Wastewater Using Permanganate Oxidation - SME Annual Meeting 2022
- Organization:
- Society for Mining, Metallurgy & Exploration
- Pages:
- 4
- File Size:
- 411 KB
- Publication Date:
- Mar 2, 2022
- Categories:
- Coal & Energy, Environmental, Health & Safety, Industrial Minerals & Aggregates, Mineral & Metallurgical Processing, Mining & Exploration, Underground Construction
- Industry Topics:
- Automation, Economic Viability, Green Technology, Mine Planning, Operations, Processing, Rare Earth Elements, Reclamation, Regulation, Social License, Sustainability, ESG, Tailings, Water Management, Workforce
Abstract
Thallium (Tl) is a highly toxic heavy metal, soluble over a wide pH range. Tl levels may exceed discharge limits in mining-influenced water associated with processing gold, lead, cadmium, zinc, and copper ores. In this work, the effect of sodium permanganate (CARUSOL® C liquid permanganate) on Tl removal from mining wastewater was studied. Factors influencing Tl removal, namely permanganate dosage/demand, coagulant and flocculant use, order of chemical addition, and co-existing metal ions were examined. The results show that permanganate addition is very effective at removing Tl to below target limits and can provide a unique solution for improving wastewater quality and optimizing overall treatment costs. In addition, several on-line monitoring techniques were evaluated for process optimization. The Hach DPD Free Chlorine method was optimal, allowing plant operators to rapidly and easily spot check effluent samples for excess permanganate dose.
Citation
APA: (2022) Thallium Removal From Mining Influenced Wastewater Using Permanganate Oxidation - SME Annual Meeting 2022
MLA: Thallium Removal From Mining Influenced Wastewater Using Permanganate Oxidation - SME Annual Meeting 2022. Society for Mining, Metallurgy & Exploration, 2022.