Based on the analysis of the mechanism of the falling film evaporation and the falling film condensation,a new absorption type solar desalination system with four effect regeneration was made.

Based on the enhanced heat and mass transfer mechanism of the falling film evaporation and the falling film condensation on horizontal tube and vertical tube,a new solar desalination system with four effect regenerations was designed.

Structure design of mobile seawater desalination device;

Research situation and development of seawater desalination plant for ships;

Selection of pretreatment system of seawater desalination;

Discussion on nearshore desalination in Tianjing;

Off design performance analysis of desalination plant with low temperature distillation;

Study on the application of the reverse osmosis desalination technology in ship;

The application of ceramic membranes in the pretreatment of seawater desalinization;

Effect on cost of seawater desalinization of circular economy modes

The paper puts forward the linked pattern of salinity balance by seawater desalinization and water quality based on water supply so as to accomplish zero discharge of industry wastewater and circular economy based on the inner and outer situation and the operation experience of zero discharge of industry wastewater in Shougang Iron & Steel Corporation.