It will be a very good idea that the effluent after treatment be recycled by the industry again.I can help get almost pure water from the effluent using a bacteria and a fungus and the water be almost near normal water free of all additives and can be easily reused. Infact all the heavy metals can also be reused and the fungus shall help develop a product that can be reused by soap and toothpaste industries. Options open.
Thanks