In the production process of some enterprises, concentrated salt wastewater will be produced, and the total amount is not large. Using conventional multi-effect evaporation, MVC and other technologies has high investment costs, serious fouling of the evaporator during operation, and difficult maintenance. However, traditional spray evaporation technology has low thermal efficiency, and spray exhaust gas is directly evacuated, causing energy waste. This equipment adopts the principle of humidification/dehumidification, that is, pressurized wastewater is atomized in the spray tower and exchanges heat with hot air to evaporate to form hot and humid air, which is then condensed and dehumidified through the heat exchanger, thereby achieving wastewater concentration and zero wastewater emission. purpose. Since this technology no longer uses an evaporator, it can completely solve the scale problem in the traditional high-salt wastewater evaporation and concentration process, and effectively improve the reliability and service life of the system. The equipment is simple, the investment cost is low, and the operation and maintenance are simple. At present, similar technologies and products are still in a blank stage in the field of high-salinity wastewater treatment in China, and products can guide market development.<o></o>