What is the function of the 'blowdown' process in a geothermal power plant's cooling water system, and how is it regulated?

The function of the 'blowdown' process in a geothermal power plant's cooling water system is to control the concentration of dissolved and suspended solids in the circulating cooling water. Cooling towers evaporate water, which leaves behind dissolved minerals and other impurities. Over time, these impurities concentrate, leading to scaling, corrosion, and fouling of the cooling tower and associated equipment. The blowdown process involves removing a portion of the concentrated cooling water and replacing it with fresh water. This reduces the concentration of soli....