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Veolia Receives Patent For The Crystal Recovery And Sludge Recycling For Wastewater Treatment Technology

SOURCE: Veolia Water Technologies    5/19/2016 10:51:00 AM    ReadCount:562

Veolia Water Technologies has been awarded a patent for the recirculation of sludge for its sulfate removal technology, LoSO4™ which is used primarily to treat wastewater from mining operations for discharge or reuse.
The proprietary LoSO4™ process was developed by Veolia to respond to increasingly stringent regulations limiting sulfates in surface water discharges as well as increased mining industry interest in the reuse of mine water for beneficial purposes.
“Veolia has more than 350 patented technologies developed to conserve resources and optimize 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 sulfate levels in mine water effluent below 100 mg/l, and generate a clean water effluent for reuse or discharge,” says Klaus Andersen, President of Veolia Water Technologies, Inc.
Removal of sulfate and other solids from the wastewater stream The newly issued patent (U.S. 9,278,875) specifically supports the crystal recovery/sludge recycling process of the LoSO4 technology and is the second patent related to this invention. This innovation separates aluminum-based crystals from the precipitated sludge of the LoSO4 technology to recycle them back into the system for reuse.
“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,” according to Chuck Blumenschein—a co-inventor of the LoSO4 technology. He adds, “this process boosts crystal growth which improves the removal of sulfate and other solids from the wastewater stream.”
About Veolia group
Veolia group is the global leader in optimized resource management. With over 174 000 employees worldwide, the Group designs and provides water, waste and energy management solutions that contribute to the sustainable development of communities and industries. Through its three complementary business activities, Veolia helps to develop access to resources, preserve available resources, and to replenish them. In 2015, the Veolia group supplied 100 million people with drinking water and 63 million people with wastewater service, produced 63 million megawatt hours of energy and converted 42.9 million metric tons of waste into new materials and energy. Veolia Environnement (listed on Paris Euronext: VIE) recorded consolidated revenue of $30.3B in 2015. For more information, visit