This method requires a great deal of area, is slow and is subject to the weather. Forced Air Evaporators Utilize blowers to force air in a counter current to a spray of water pumped to the top of a column and free falling downward. The evaporation rate is largely dependent on the water temperature and the dew point. Not recommended for water high in dissolved or suspended solids as they will deposit on the internals and block the water airflow. This design has no method of removing dried solids.
Cost estimates depend on the temperature of the waste stream.
Problems Source water should be preheated by process generating waste. Efficiency is dependent on the relative humidity and water temperature. Air permitting may be required Boiling Water Evaporators Basically heating the water to its boiling point 212 F and exhausting the steam via an exhaust pipe. This method has no way to remove dried solids other than baking the tank contents down to a cake, which insulates the heat and holds it into the steel, causing early tank failure. With the addition of a condenser you can distill the water for reuse.