Tseung Kwan O Desalination Plant

Why does the plant use RO technology?

According to Agreement CE71/2000 "Feasibility Study on Development of Desalination Facilities in Hong Kong", Reverse Osmosis process has lowest lifecycle cost compared to other desalination process technologies, such as Multi-Stage Flash (MSF) and Multiple Effect Distillation (MED), and hence is more economically viable in comparison with other technologies.

The technical feasibility of Reverse Osmosis process is further confirmed under the Agreement CE97/2002 (WS) "Pilot Plant Study on Development of Desalination Facilities in Hong Kong", under local conditions for producing potable water complying with the World Health Organisation guidelines for drinking water quality.

Typical schematic diagram of the treatment process using Reverse Osmosis is shown in the following diagram.


Typical schematic diagram of the treatment process using Reverse Osmosis