Originally, some power plants use seawater.
Supply water for power plants often comes from surface water, groundwater, coastal areas and areas lacking fresh water. Seawater is often used as a source of water supply. the water needs to be precipitated, and high purity water equipment such as filtration, desalination and degassing are used for treatment. Seawater is used as a water supply source and requires seawater desalination equipment before it can enter the water circulation system of the power plant.
The water vapor circulation system of the thermal power plant has strict water quality requirements for the water used as the working fluid and cooling fluid of the thermal system. For example, the high pressure boiler feed water is not only. requires low hardness, minimal dissolved oxygen, solids and organic matter content. Water content that does not meet water supply standards will make it impossible for the reverse osmosis desalinated water treatment system to operate safely and economically. , ultrapure water treatment equipment of multi-bed ion exchange, mixed bed high purity water system, etc. are necessary to manage ultra-pure water treatment equipment in thermal power plants. To this end, quality indicators for different types of water used in thermal power plants have been developed.