To describe an environmental technology that the base flocculation of sea water desalination pretreatment,and the new environmental protection materials magnesium hydroxide in the process of seawater desalination pretreatment and its application in the field of environmental protection.

This study mainly researches fouling mechanisms in the process of seawater pretreatment.

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.

In this paper;the ways to solve the water crisis are brief introduced Theadvantageofseawater desalination technology and its different method sare also present:The sea water desalination technologies are compared in terms of capacity,energy consumption,pretreatment requirement,product water quality, landoccupationetc.

It may be the effective compensation way to consider sea water desalination for resolution.