The process of boiling in the wastewater evaporator

   In the process of Wastewater treatment, the use of a wastewater evaporator can convert some solvents in the wastewater into a vapor state, in order to increase the concentration of solutes in the solution or precipitate solutes into solids, thus eliminating some harmful components in the wastewater. In most cases, wastewater evaporators are used to increase the concentration of the solution and precipitate solutes while evaporating. In addition, they are also used to separate pure solvents and achieve the goal of purifying water quality.

 

In a wastewater evaporator, if the temperature of the wastewater is lower than its boiling point and the vapor pressure of the solvent directly above the surface of the solution is greater than the partial pressure of the same vapor in the space above the solution, but less than the total pressure, gasification reaction will occur in the wastewater evaporator at different temperatures on the surface of the wastewater. However, due to the inability to strongly eliminate solvents from the solution during the gasification process, the concentration of the solution is slow, so it is rarely used.

 

When the vapor pressure of the wastewater is equal to the total pressure in the space above the solution, a boiling process will occur in the wastewater evaporator. Under a certain pressure and concentration, the wastewater can still maintain a certain temperature. After further action by the wastewater evaporator, steam will be formed. So, in the process of wastewater treatment, the purification of wastewater is mostly carried out under boiling conditions.