Is it possible to test air cleaning or disinfection devices used in air conditioning systems? We look at a potential air testing system, and see if it is possible to compare different devices and determine optimum operating conditions for the air cleaning devices. 30 June 2009
In the oil and gas industry, specifically the filtration and separation of produced water and sand management generated by oil production, engineering simulation can enhance the operational performance and effectiveness of equipment. In this article, Ahmad H. Haidari of ANSYS, Inc. explains how it can assist with extraction. 25 June 2009
Ken Sutherland looks at the importance of filters in the production of crude oil, both on- and offshore. 05 June 2009
Continuing his series of articles covering new developments in a number of broad classes of filtration and other separation equipment types, Ken Sutherland looks now at recent developments in centrifuges, operating both by sedimentation and filtration. 22 May 2009
Tightened emission requirements on diesel engines mean the use of fuel injection equipment that is vulnerable to contaminants. Mandatory fuel sulphur reduction and biodiesel inclusion induce chronic field failures of fuel-water separators that are not yet modelled in industry test standards. This article, by Christine Stanfel of Ahlstrom, considers the hurdles to diesel engine protection in today’s fuels. 07 May 2009
ACHEMA is the world forum for the process industries. The city of Frankfurt hosts ACHEMA – the largest international meeting for the process industries, encompassing everything from oil and gas processing, through power generation, base chemicals and pharmaceuticals, to biotechnology. 08 April 2009
Nearly a mile long and 40 metres below ground, a key section of Belfast’s deepest tunnel was completed earlier this year, boosting Northern Ireland Water’s efforts to tackle river pollution and reduce flooding. 27 March 2009
The challenges of changing regulations and standards can mean difficult situations for water companies. As new discharge limits and controls come into force, traditional treatments can become redundant. Severn Trent Services explain how they have been using filtration technology to meet the challenges. 27 March 2009
In the quest for efficient and economical water use and land footprint in water production, membrane bioreactors (MBR) have been leading the way. In this article, we look at how the membranes in an MBR work, and some recent developments in this sector of the water industry. 27 March 2009
The subject of butterfly valve technology and its suitability for desalination plants raises a number of issues in respect of providing adequate protection against corrosion. Bryan Orchard visited the KSB Amri Water Valve Division Competence Centre in France to learn more about their technologies. 27 March 2009
There is an increasing requirement for sustainable treatment options to deal with the various types of emissions to the environment, including the bad smells occasionally generated by wastewater treatment processes. This article takes a look at a technology that can reduce and eradicate odour emissions. 27 March 2009
There is no doubt that efficient filtration is essential when dealing with industrial wastewater issues. In this article, Cat Pumps explain why the successful creation of a filter cake is the result of an effective filter cloth, and how regular washing can assist with ensuring this happens. 26 March 2009
Membrane Bioreactors (MBR) with submerged membrane modules are being adopted in many areas of the globe as the next generation of biological water treatment technology. We take a look at some of KMS’s recent projects. 26 March 2009
The town of Gillingham, England has responded to growing population and increased treatment standards by installing four of Nordic Water’s Dynasand moving sand bed filters. The installation in its present configuration is designed to meet anticipated needs till 2013 – but with additional media and designed capacity for a potential fifth unit, it is expected to meet Gillingham’s needs until the year 2020. 26 March 2009
Water pollution – especially as a result of oil production and storage – is an unfortunate fact of life. Finding a solution is not as obvious, especially if it has to fit around an existing infrastructure. We take a look at a development by BPC, which looks at bioremediation as a solution. 26 March 2009
As we are all aware, water is becoming a scarce and expensive commodity. The beverage and food industries, looking to increase the recycling of their process water to keep costs low, are turning towards membrane bioreactors for water treatment. Alfa Laval's Detlef Ahrens explains how it works. 25 March 2009
The need to remove pathogens from potable water supplies is long recognised. In this article the characteristics of pathogen groups are outlined alongside an overview of the approaches used to remove or otherwise deactivate pathogens from water. The effectiveness of these approaches and any significant drawbacks are also considered. 23 March 2009
After millennia of evolution, water filtration technologies face many challenges, from increasing demand to new contaminants. But perhaps the biggest challenge is reducing the environmental footprint of water treatment systems. Jim Lauria of Amiad Filtration Systems discusses the past, present and future of water filtration. 23 March 2009
There are different designs for underdrains – important when removing suspended solids from potable water. David Shepherd of Severn Trent Services Ltd takes us through some recent developments. 23 March 2009
The membrane bioreactor has become an important processing tool in the treatment of waste liquids. Ken Sutherland looks at its technology and applications. 23 March 2009
Ken Sutherland considers the various ways — such as reverse osmosis and nanofiltration — to filter fresh and waste waters, discusses the purposes for that filtration, and looks at the equipment used in the various methods. 23 March 2009
Can old tyres be an effective filter medium? Yue-Feng Xie, Bryon A. Killian and Andrew S. Gaul look at using crumb rubber from waste tyres when filtering wastewater. 23 March 2009
Ken Sutherland looks at the characteristics of depth filtration, at the range of equipment used to implement the filtration process, and at how it is used, with a special look at biotechnological applications. 23 March 2009
The Water Corporation of Western Australia turned on the country's largest seawater reverse osmosis (SWRO) plant back in November 2006, starting the delivery of a planned 45 gigalitres of drinking water a year into the Perth public supply system. Bryan Orchard looks at the technologies involved. 20 March 2009
Hal Alper and H. Parthasarathy from Mycelx Technologies Corporation look at the problem of ‘oily mists' – secondary aerosols found in a range of industries that can significantly decrease air quality and which require specialised filter technology to be removed. 18 March 2009
As membranes become more common in every aspect of the filtration industry, Ken Sutherland examines the bulk chemicals and petrochemicals industrial sector to see how membrane separation processes are involved. 18 March 2009
Ralf Krüger from inge watertechnologies describes the growing popularity of ultrafiltration as pre-treatment in seawater desalination and looks at its successful application at an Italian power plant that required an efficient and low-maintenance ultrafiltration solution. 18 March 2009
Dave Rigby from ELGA Process Water, a part of Veolia, outlines the latest approach to pure water production for use in boiler feed. 18 March 2009
A relatively recent development in membrane processes, Ken Sutherland looks at the rapidly expanding field of nanofiltration, its characteristics and its applications. 18 March 2009
The Harnaschpolder wastewater treatment plant, based in the Netherlands and run by Veolia, is a great example of a modern filtration system with a look to the future. Filtration+Separation visited the plant to find out how it operates. 18 March 2009
A team from the Belgian company Bekaert explain the development of an enhanced surface filter medium based on short metal fibres, specifically designed for applications in the food and beverage and chemical and pharmaceutical industries. 18 March 2009
The production processes for beverages demand that the final result is a drink that meets the expectations of customers, both visually and gastronomically. Ulrich Braeutigam of Sartorius explains how the last step in this process could be the most important, and how a new product could help. 18 March 2009
Until recently the nuclear industry in the United States and parts of Western Europe has been dormant or in decline. At the same time, nuclear capacity has been expanding in Eastern Europe and Asia. We examine the part that filtration technology can play in the nuclear industry, and the future of this market. 18 March 2009
Lon Edelman of Kimberley-Clark believes that filter media is no longer just a commodity, and that its true value can be determined by life cycle costing. This article looks at the evolution of filter media in the air sector, with a particular focus on North America. 18 March 2009
Dr Graham Rideal, founder and senior scientist of Whitehouse Scientific, explains the importance of a correctly calibrated filter when involved in oil production. As prices per barrel continue to increase, every drop does count – what role can a filter play in getting more oil for the production dollar? 18 March 2009
Peter Rose of Alfa Laval takes a look at one of the growth areas of biopharmaceutical filtration and separation: the harvesting of mammalian cells to produce new drugs and medicines. The article examines the origines of the technology used in this sector of the industry, and considers recent developments. 18 March 2009
There is increasing inter-dependency between new filtration technologies and renewable energy. In this article, Dr Mike Coffey looks at the growing use of renewable energy in systems such as wastewater treatment and biogas combustion, and integrating sustainable power into energy intensive reverse osmosis systems. 18 March 2009
The growing number of biogas plants makes it increasingly difficult to return the fermentation residue substrates to green spaces or arable land. We take a look at a way of treating the fermentation residue substrates so that they can be discharged and re-used. 18 March 2009
Engineers set out to design a cartridge filter that could work efficiently to provide compressed air to international quality standards. The design involved looking at critical areas, such as air flow management, filtration media selection and construction and the efficient removal of coalesced liquid. 04 March 2009
A long with black coal, natural gas and nuclear power, one of the most important sources of energy is brown coal. But one of its by-products, gypsum, has to be dealt with in an environmentally friendly way before it can be re-used. That's where GKD's filter belts and meshes come in. 04 March 2009
A Mexican power plant was in need of a system that could effectively and efficiently treat its secondary wastewater stream. The plant turned to a manufacturer of water purification and chemical recovery equipment for a new system which could find a more economical and efficient method of tertiary treatment, primary demineralisation, and polishing. 04 March 2009
Renovated in 2005, a sewage plant in Sweden invested to make operations more efficient and reliable. A specialist offering solutions in machines and electric motored processes provided a range of equipment that could ensure the plant's flow consistency, reduction in energy consumption and low maintenance. 04 March 2009
Lyco Manufacturing was called upon to create a screening system to deal with the troublesome organic contaminants that are released as a result of turkey processing and can lead to companies having to pay additional discharge fees. 04 March 2009
A major food company was experiencing screen blockage problems when filtering rapeseed oil for biodiesel production. It decided to purchase a Self-Cleaning Filter from separation specialists Russell Finex. By installing the filter the company hoped for an increase in productivity and improvement in product quality. 03 March 2009
Despite extreme drought conditions and a rapidly growing population, the Western Australia city of Perth is getting water to its residents due to a groundbreaking desalination plant which uses low-pressure membranes and renewable energy to achieve its results. 03 March 2009
Ultra-violet disinfection and a rehaul of filters was key to solving the problems of a water treatment facility in Poughkeepsie, USA, that needed to upgrade its existing treatment technology to meet new US disinfection standards. 03 March 2009
Producing fuel ethanol can be expensive, but with the right technology a company can reduce costs and save energy. A designer and manufacturer of gas separations systems created a membrane separation technology as an alternative to distillation and molecular sieve dewatering solutions. The company decided to put it to the test at an ethanol manufacturing plant. 03 March 2009
The elimination of total organic solids (TOC) from feedwater is vital to ensure the long term performance of a high-pressure boiler. At a power plant in Thailand, a ‘two pronged’ application of UV technology from Hanovia reduced TOC by 68% and helped the plant on the way to meeting the country’s growing electricity demand. 03 March 2009
Crossflow filtration has been used for many years in food and beverage applications. Now French filtration specialists SIVA have improved the technology, ensuring that this method of filtration can meet oenophiles’ high standards for wine quality – and save energy in the process. 03 March 2009
The city of Atlanta is growing rapidly, which has led to increasing waste gases being emitted from wastewater plants. Following vociferous complaints from residents living near these plants, clean air specialist Purafil was called upon to install temporary and permanent contamination control units to remove the unpleasant odours. 03 March 2009
Seawater pre-treatment is an integral part of every seawater reverse osmosis (SWRO) desalination plant, used to remove particulates, debris, micro-organisms, suspended solids and silt from the source seawater. But with conventional and membrane filtration to choose from, which is right for you? Nicolay Voutchkov compares the two options. 09 February 2009
Nikolay Voutchkov takes us through one of California’s most advanced desalination projects – the Carlsbad seawater desalination plant – and explains the associated climate action plan in order to keep the plant as carbon neutral as possible. 04 October 2008
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