The proprietary LoSO4 process was developed by Veolia to respond to increasingly stringent regulations limiting sulphates in surface water discharges as well as increased mining industry interest in the reuse of mine water for beneficial purposes.
Klaus Andersen, president of Veolia Water Technologies, said: “Veolia has more than 350 patented technologies developed to conserve resources and optimise their use, while protecting their quality and efficiency throughout the usage cycle. This latest innovation has been designed to significantly improve the method to lower sulphate levels in mine water effluent below 100 mg/L, and generate a clean water effluent for reuse or discharge.”
The newly issued patent specifically supports the crystal recovery/sludge recycling process of the LoSO4 technology and is the second patent related to this invention. This innovation separates aluminium-based crystals from the precipitated sludge of the LoSO4 technology to recycle them back into the system for reuse.
Chuck Blumenschein, a co-inventor of the LoSO4 technology, commented: “This new patented process enhances the efficiency of the LoSO4 system by capturing approximately 95% of crystals from the sludge and recycles them to be reused in the system. This process boosts crystal growth which improves the removal of sulphate and other solids from the wastewater stream.”