Sales of ultrapure water (UPW) filtration and treatment equipment will exceed $3.8 billion in 2017. Electronics companies will be the largest purchasers. Semiconductor, photovoltaics, flat panel and memory manufacturers will be purchasing UPW hardware and consumables for the purpose of washing etching solutions and other fluids from their products in process.
The largest application is boiler feedwater. Coal-fired power, gas turbine combined cycle and industrial power producers will spend $1.7 billion in 2017 to purify the water which is converted to steam.
Ultrapure water in the pharmaceutical industry is used for washing containers and products, but is also used directly in drugs and is classified as water for injection (WFI).
In the last decade, new uses for UPW have risen. One is water to be injected through fogging nozzles in gas turbine inlets. Humidification in data centers is another application.
Ultrapure water systems incorporate various membranes. Prefiltration is accomplished by microfiltration and ultrafiltration. Final purity is achieved with reverse osmosis (RO).
Special pumps and piping are needed to assure that the UPW is not contaminated during transport.
Picture: McIlvaine Company
Source: McIlvaine Company