It integrates steam mechanical recompression and negative pressure evaporation processes, greatly reducing energy consumption compared with ordinary evaporators. Equipped with clean separation and super concentration technologies, it can remove more than 95% of COD and conductivity, and cut waste liquid output by 90% to 98%. Applicable for treating: penetrant inspection wastewater, cleaning wastewater, electroplating wastewater, emulsion and cutting fluid wastewater, surface treatment wastewater, industrial testing wastewater, concentrated wastewater and so on.