Dear Nicholas,I think ...

Dear Nicholas, I think treatment of water used in hard rock mining is growing due the reducing levels of waters and the increase in global water demand. Wastewater treatment is a very important and environmentally friendly option to produce fresh water. Both wastewater treatment methods (a short description of the process:http://www.arabwatersource.com/water-blog/-the-wastewater-treatment-process-and-its-benefits-a-short-overview) and desalination processes can be used to treat waste brackish water produced from the mining processes. Here is a detailed description of the most popular desalination processes and how they can be used to treat brackish water: http://www.arabwatersource.com/water-blog/the-desalination-processes-a-detailed-description. Therefore, I think the only important trend that is increasing wastewater treatment of water used in mining is the worldwide increase in water scarcity. As we know everything depends on water after all.