Water Reuse in the Power and Steel Production Sector
In order to reduce the combined water footprint of the sites, the power plant cooling system has been improved to reduce freshwater demand. Blowdown water that was previously discharged to the ocean is now transferred to the steel plant. In addition, wastewater from the steel facility is being treated for reuse in the power plant and for localized irrigation of landscaping.
At a project cost of US$380,000, funded by Essar Gujarat, results point to an 86 percent reduction of power plant wasterwater that would have otherwise been discharged into the ocean. The steel plant, in turn, now uses 45 percent of recycled wastewater. The total volumetric impact of the project stands at 1,479,000m3/year.