METHOD FOR TREATING WASTEWATER

摘要

PURPOSE: A method for treating wastewater which pretreats the wastewater and evaporates pure water by heating treated wastewater in high temperature is provided to increase the treatment efficiency of wastewater with inexpensive. CONSTITUTION: The method for treating wastewater using evaporation device comprises the steps of (S101) the pretreatment stage of wastewater by removing pollutants in the wastewater; (S102) the introduction stage of treated wastewater into evaporation device; (S104) the heating/evaporation stage of wastewater; (S103) the spraying stage of wastewater in evaporation device. If the heating temperature of wastewater is below a set point, exclude the inflow of wastewater into evaporation device and if not, allow the inflow. The water vapor of wastewater is emitted to atmosphere or discharged into river after condensed into pure water.