Seawater desalination

Application of reverse osmosis membrane in seawater desalination



Energy conservation, emission reduction, and development of circular economy projects supported by the state


About Background:

Seawater desalination technology is a water treatment technology that has emerged in recent decades. Reverse osmosis technology has the advantages of low water production energy consumption, wide application range, and good construction efficiency; Short term, not subject to regional restrictions, and other characteristics. With the increasing shortage of water resources and the worsening of water pollution, water-saving and cross basin water transfer cannot fundamentally solve the water shortage crisis in coastal cities. Human beings have started to seek water from the sea and use reverse osmosis technology to achieve the resource utilization of seawater, providing sustainable water resource solutions for coastal cities.



Project location: Guangdong Coastal Area

Raw water quality: seawater near a coastal city

Water production purpose: integration into the tap water pipeline network or irrigation

Membrane element type: seawater desalination membrane

Processing scale: 2000m3/d

Warranty period: 3 years


Benefit improvement:

Analysis of the water production cost of the seawater desalination system: the cost of reagents (flocculants, fungicides, scale inhibitors, reducing agents, etc.) is 0.35 yuan/t, the cost of electricity (pumps and other electrical equipment) is 2.35 yuan/t, the cost of labor and management is 0.5 yuan/t, and the total operating cost is 3.2 yuan/t. The cost per ton of seawater desalination mainly comes from electricity bills, and power plants have cost advantages in this regard. This project can save approximately 1.75 million tons of tap water annually, effectively alleviating the severe shortage of fresh water in the region, with significant environmental and economic benefits.