Water / Wastewater Treatment New Ultrafiltration Module Rack
Ultrafiltration systems are now used all over the world to treat many different types of water – including drinking water, waste water and industrial process water – and are increasingly also being employed as a means of pretreating seawater for reverse osmosis. With such a broad variety of potential applications, ultrafiltration systems must have the ability to adapt to myriad different requirements, especially with regard to their configuration and footprint. While sea water treatment plants are often built in desert regions where there is normally plenty of space for the facility, conventional drinking water treatment plants designed to recycle water for industrial use are frequently confined to much smaller spaces. Typically, these plants are only willing to modernise their facilities on condition that no major building work or structural alterations are required. The footprint of the rack system is therefore a major criteria in this decision-making process.
The “T-Rack” system from inge watertechnologies AG (Germany) is already regarded as a hydrodynamic solution that makes optimum use of the available space when installing UF modules, but the
developers have now made some key changes that have made the system even better. The feed and drain pipes are integrated in the end caps of the headers, the filtrate connections are welded to the module bodies and headers, there are no O-rings and all the flanges of the header pipes are
mounted in the same plane. The modules can be arranged in either two or four rows and each row can be operated as a separate filtration line. This concept offers unparalleled flexibility and helps keep investment and operating costs to a minimum. Reader Reply Card No 44 Low-Energy Reverse Osmosis Element that Decreases Operational Costs Launched
Dow Water & Process Solutions announce a new development in the Company’s reverse osmosis (RO) technology that allows industrial plants to reduce operating costs while maintaining high-quality process water, desalination plants to achieve better rejection from the second pass and system designers to reduce capital and operating expenses. The new DOW FILMTEC™ HRLE-440i, a high rejection, low energy element that utilises advances in membrane chemistry to deliver 99.5 percent sodium chloride rejection at 150 pounds per square inch (psi),. This is the latest RO development from Dow Water & Process Solutions, a leading global supplier of advanced technologies for purification and separation processes that make safe, clean water more available worldwide.
“This advance in membrane chemistry allows new RO equipment to be designed around lower pressure membranes, meeting permeate quality with up to 30 percent less energy than conventional brackish water
membranes,” said Chris Sacksteder, strategic market manager for industrial water, Dow Water & Process Solutions. “In addition to energy efficiency, with 440 square feet of active area, the DOW FILMTEC™ HRLE-440i membrane allows fewer elements to be used in a system design. This shrinks the overall system footprint, related energy use and operational costs.”
The DOW FILMTEC™ HRLE-440i element delivers effective rejection of silica, boron, nitrate and ammonium with performance supported by Dow Water & Process Solutions’ modeling software. The element meets ANSI/NSF 61 certification requirements for drinking water system components.
“Improving product performance is a key element of our research and development efforts,” adds Abhishek Roy, Research Specialist for Dow Water & Process Solutions. “Dow Water & Process Solutions is constantly
working to create new options for reverse osmosis that increase both effectiveness and efficiency. For existing systems designed around low-energy membranes, DOW FILMTEC™ HRLE-440i element provides a replacement option that improves product water quality without additional energy use.”
Dow Water & Process Solutions has applied an advanced manufacturing process that utilises automated fabrication to yield consistent product quality and performance, as well as utilised patented iLEC™ interconnectors for more reliable installation and minimised o-ring leakage. The DOW FILMTEC™ HRLE-440i is available as a dry element for improved shelf life and convenience of installation.
Reader Reply Card No 45 Type-Certified Ballast Water Treatment System
The CleanBallast system, developed over many years by RWO water treatment experts, a VeoliaWater Solutions & Technologies company, has received its Type Approval. The system, consisting of a mechanical filter process and a special disinfection unit, has so far been ordered for more than 40 plants. A number of these plants have been installed and in successful commercial operation since the end of 2009, making CleanBallast one of the few systems that can demonstrate a longer operational duration in commercial application.
Because of the increasing negative impacts of alien marine organisms transported in the ballast water of oceangoing ships, the International Maritime Organisation (IMO) spent many years working on a Ballast Water Convention. This convention adopted in 2004 is aimed at preventing the unintended transport of microorganisms in ballast water.
The CleanBallast technology was developed by RWO from 2003, refined over the years and extensively tested under real-life conditions. Even under extreme conditions, such as high sediment concentrations, CleanBallast exceeded the IMO test requirements. The design and testing of the plant under real environmental conditions is an essential prerequisite for guaranteeing a fast and safe loading of ballast water and short times alongside in port. In addition, the efficient removal of the sediment considerably reduces tank cleaning costs and prevents the loss of valuable loading capacities.
Many years’ experience in treating water and wastewater aboard ships and offshore rigs helped the Bremen-based company in developing the modular system, which stands out for its technological reliability, sustainability and economical operating and investment costs. The CleanBallast system, which can operate not only in sea water but also in waters with a low salt content, is offered for various capacities and assignments and both for new building and retrofitting.
"Designed and made in Germany" is still an internationally well-known and recognised mark of quality of the RWO maritime water treatment experts, with the CleanBallast plants being manufactured at their main site in Bremen.
"We are very satisfied with the performance of the CleanBallast systems, which already enable us to implement the loading and discharge of ballast water in conformity with the D2 standard of the IMO," says Niels Stolberg, President and CEO of Beluga Shipping GmbH, about the RWO technology.
Due to its leading edge technologies, plant reliability and short delivery times, RWO has in the course of recent years already established itself as the international market leader in bilge water treatment. RWO is now also pursuing this goal with the ballast water treatment system CleanBallast.
Reader Reply Card No 46
The Netherlands Assists Azerbaijan with Flood Protection
The government of Azerbaijan has entered into a contract with engineering consultancy Royal Haskoning and research institute Deltares, to prevent the repeat of devastating floods experienced by the country during spring 2010. The agreement is part of an initiative of cooperation between the Netherlands and Azerbaijan that will see improvements to water management and flood protection measures.
Heavy rainfall during spring 2010, combined with a poor drainage system caused Azerbijan’s rivers Araz and Kura to burst their
banks. As a result large areas of the country were flooded, causing extensive damage. The rivers, which originate in the Caucasus mountains, converge and flow into the Caspian sea. Used to irrigate a dry area of Azerbaijan, the area is not prone to flooding.
Resolving to implement structural measures to bring water management and flood protection measures up to standard, the Azerbijan
government has collaborated with the Netherlands to prevent flooding in this region from recurring. As a result the Dutch water authority Rijkswaterstaat - including representatives from Royal Haskoning and Deltares, has led a full scale investigation of the area.
2011 action plan
Royal Haskoning and Deltares are developing initial ideas for solutions in partnership with the Azerbaijan ministry for water. The development of an action plan for 2011 has begun in earnest to ensure the country is prepared for spring 2011 season. A long-term programme that will examine all water management measures across the region is being developed in conjunction.
Tasks include analysis and recommendations for the technical system of rivers, dykes, dams and irrigation. A clear emphasis will also be placed on the transfer of knowledge and organisation. The ultimate aim is for local parties to assume maintenance and management of the system, which considered to be one of the most important factors for ensuring long term success of the improvement programme.
Dutch expertise
Royal Haskoning and Deltares have a strong track record in flood risk management, having successfully carried out significant flood management projects in New Orleans, Vietnam, Indonesia, Russia, the UK and the Netherlands.
The agreement anticipates both organisations will be involved in the development, design and implementation of Azerbijan’s flood management plans for the foreseeable future. Depending on further fulfilment of the contract, the work represents a value of several million euros.
Reader Reply Card No 47 Reader Reply Card No 48
www.pollutionsolutions-online.com • Annual Buyers’ Guide 2011 13
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