Sales of cross-flow membranes and equipment will exceed $10.4 billion in 2014, according to the latest projections in RO, UF, MF World Market published by the McIlvaine Company.
McIlvaine Company adds that desalination is the biggest segment and is growing at 11 percent per year compared to 6 percent for the industry in entirety. This growth rate is exclusive of inflation. The market in China is growing faster than in any other nation. China plans to more than triple its production to 2.2 million cubic meters a day by 2015. China is also the largest purchaser of cross-flow membranes for the power industry. The boiler feedwater must be ultrapure.
Reverse osmosis is utilised in desalination, boiler feedwater, injectable pharmaceutical fluids and for purification of wastewater for reuse. Ultrafiltration is used for purification of water and wastewater and separation of products in the food and beverage industry. Microfiltration is edging out granular media filters as a method for purifying water for drinking purposes. A process for combining membrane filtration and biological treatment in one vessel is being widely used. Membrane bioreactors (MBR) are used to purify wastewater where the distance to the city wastewater treatment plant is high.
A further use of membrane technology is in sewer mining. A golf course can extract sewage from the pipeline and process it in a cross-flow membrane system. The product is then used to water the golf course while the reject is returned to the sewer line. The biotechnology industry uses microfiltration to separate products.
Table 1: Cross-flow membrane market ($ million)Industry2014 Chemical435 Desalination3,166 Food273 Metals358 Mining120 Oil & Gas124 Other Industries 744 Pharmaceutical 903 Power652 Pulp & Paper250 Refining 120 Residential/Commercial 727 Semiconductor253 Wastewater367 Water1,994 Total10,486
