Koch Membrane Systems has earned a reputation as a leading innovator in membrane technology, based on over 30 years experience in the field. It manufactures a complete range of membranes in tubular, multi-tubular, hollow fibre and spiral wound configurations and these can be produced in polymer materials as well as carbon for high temperature applications. The company is a pioneer in the development of membrane filtration systems, with over 8000 installations worldwide, of which around 500 are in the UK. These are used in the food, industrial, chemical and pharmaceutical sectors, both for concentrating product and for treating effluent.
Membrane filtration is rapidly gaining acceptance as a cost-effective, space-saving alternative to technologies such as air flotation, chemical treatment, biological treatment and cyclones. It relies on the use of a thin semi-permeable membrane, which acts as a selective barrier and separates components of a feed stream on the basis of molecular size.
Membrane proceses are differentiated by the size of particles they separate and are categorized into microfiltration, ultrafiltration, nanofiltration and reverse osmosis. Membrane filtration using ultrafiltration can be used to remove a wide range of biological materials, such as bacteria, viruses, starches, dyes and paints, as well as fats, oils and greases. In appropriate circumstances, it can reduce a company's costs and environmental impacts and thereby increase its competitveness. It often allows the recovery of components in a chemically unchanged form and can, therefore, offer a financial advantage over physiochemical and biological treatment processes.
Reverse osmosis is already used in a wide variety of industrial sectors, from semi-conductor manufacture to power generation and from brewing to wastewater treatment. It is often used as a precursor to ion exchange to produce ultra-pure water and is often applied as a post-treatment to other forms of membrane filtration to allow process water to be recycled.
Reverse osmosis is already a well-established technology in water treatment, especially for the desalination of sea water and for the treatment of brackish waters. It is increasingly the technology of choice for many industrial water treatment applications.
Mr Robert Skelton
The Granary, Telegraph Street,