Water is the lifeblood of a thermal power plant. As such, obtaining clean and pure makeup water and dealing with wastewater has been a requirement since the first steam generating unit went into operation.
To produce electricity, power plants require large volumes of high quality water for boiler make-up and for cooling. Mostly situation that water resources are scarce, no surplus water is available and the government will not supply power plants to place additional demands on the already scarce water supply.
In the steam boiler industry, high purity feed water is required to ensure proper operation of steam generation systems.
Boiler feed water treatment is very much required to remove such dissolved and suspended impurities from water before feeding it to boiler.
Treatment of boiler feed water is required for preventing excessive heat transfer equipment fouling and erosion of turbine blades.
The handling of power plant water and wastewater is becoming increasingly complex. Fortunately, innovative treatment technologies can help. Recent advances include forward osmosis, membrane bioreactor wastewater treatment systems, and reverse osmosis membrane improvements.
We are enables the treatment of brackish water and sea water, wastewater recovery treatment and reuse, enabling generators to dramatically reduce the amount of water used.
Use of reverse osmosis (RO) in feed water purification systems reduces chemical costs by reducing the frequency of ion exchange regeneration.
A complete system, which includes RO and ion exchange, typically results in a more cost effective system when compared to systems that don't use RO. The use of conventional RO, however, requires substantial use of pretreatment unit operations that also adds to the system's total cost.
For continuous supply of feed water to boiler, after removing impurities, there are two types of plant generally incorporated. These are: