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 and airflow. This design has no method of removing dried solids.
Cost estimates depend on the temperature of the waste stream.
Concerns Source water should be preheated by process generating waste Efficiency is dependent on the relative humidity and water temperature Air permitting may be required. Have no method of collecting or removing of suspended solids. Most of the dissolved solids are vaporized in the steam at 212 F and blown off into the atmosphere. VOC will be vaporized and will create air pollution. Therefore, all VOC's and solids must be removed from this system.