A park operator wanted to make savings on swimming pool energy bills. The results of a trial conducted on two of the pools filtration pumps deduced that the addition of variable speed drives would decrease the costs of pool pumping and air handling, without effecting water quality. 09 March 2010
When archaeologists discovered a haul of 16th century shipwrecks at a Norwegian building site, they realised that quick and efficient drainage had to be attempted to ensure both safe examination of the ships and timely completion of the building. A range of Tsurumi drainage pumps provided the answer. 02 March 2010
The population around Stockholm, Norway, is developing rapidly and new homes are needed. A range of hard-wearing submersible pumps have helped to transport contaminated water from a cable tunnel installed deep below Stockholm, making it possible to power a whole new generation of buildings for the growing city. 02 March 2010
Part of a massive sewers project in Northern Ireland requires the installation of dry well submersible pumps below ground. As the integrity of these depends on the performance of the primary mechanical seal, the solution uses a conventional mixed flow volute pump fitted with a packed gland. 25 February 2010
Pump consultant, Brian Nesbitt attempts to clarify the technical language used by pump engineers by explaining common terms used in conjunction with pump application and pump design. 23 February 2010
In this short series of articles, Rafael Ocampo examines the basic theory concerning fatigue, the influence of stress raisers on fatigue failure, and the steps to take to reduce fatigue failures. 23 February 2010
The director of design consultancy at PumpSupport, Hans Vogelesang, presents a five-part series covering energy savings in pumps. 23 February 2010
More than 60,000 visitors attended this years Pinkpop Festival drawn by headline acts including Bruce Springstein, Depeche Mode and Franz Ferdinand. The three day annual rock event, held in the city of Landgraaf in the Netherlands, places huge demands on the temporary infrastructure built to support the clean water demands of the revellers. 18 February 2010
When a Norwegian oil refinery set its sights on becoming the safest in Europe, it challenged Jet Set Hydro Technics to develop a method for removing worn storage tank bottoms using ultra-high pressure waterjets. Using a robotic system, the refinery was able to work towards their goal with safety, speed and efficiency. 16 February 2010
A new CFdesign module, which facilitates carrying out multi-scenario design studies, has allowed Cornell Pump to spend more time on pump design, and much less time on expensive rework. CFD allows reliable simulation and optimization of the design, placement and performance of critical components, as this article shows. 09 February 2010
Recent floods in Prague have required the implementation of control measures to protect the historic city from contamination from flooding and the threat of raw sewage escaping from surcharged stormwater sewers. The pumps used to control the flooding needed the combination of superior performance and low-life cost benefits and low fuel consumption. 05 February 2010
Three of Ireland’s largest stadiums have recently been overhauled and Tsurumi Pumps was chosen for pitch dewatering and sewage handling. The systems includes a sophisticated and environmental-friendly irrigation system. Further, a high-tech approach provides far more accurate control and more eÿcient use of the pumps. 05 February 2010
When a Swedish wastewater treatment plant invested in new decanter centrifuges, Emotron variable speed drives were chosen. This was one of the first times that manufacturer Noxon had used Emotron VFX in its solution, with the energy generated by the braking motor being re-used by the driving motor. 05 February 2010
Urgent calls following flood warnings in the Midwest US prompted portable pump manufacturer and rental company, Godwin, to into action. The company’s quick response ensured that the waters were kept at bay and pumps were supplied wherever they were needed most. 05 February 2010
When an Arizona power plant wanted to increase the capacity of pumps used to avoid the possibility of overflow, it was imperative the pumps be protected from the elements, making conventional solutions untenable. However, fluid handling consultancy, Quadna Inc, came up with the answer. 20 January 2010
A poorly performing pump on an offshore platform, presented a costly challenge to the oil company. Bryan Orchard looks at the solution AxFlow provided; a Waukesha rotary lobe piston pump which could stand up to the harsh North Sea conditions, has low life cycle costs and can realise predictable service intervals. 17 December 2009
Transporting viscous oil across some of the harshest landscapes in the world needed a pump system that was both reliable and durable. A collaborative approach between the oil company and pump supplier ensured that appropriate technology lead to a smooth operation. 17 December 2009
When a government project began to revamp the South Korean capital of Seoul, a city hall employee had an idea that would transform one of the cities 27 bridges into a major landmark and tourist attraction. Grundfos was on hand to ensure the reliable, efficient operation the highly visible project would demand. 25 November 2009
Climate change, increasing demands on water due to global urbanization and the legal obligations under the EUs Water Framework Directive are making the water sector an attractive place for technologies that can help reduce costs and contribute to reducing the effects of climate change. Here Heikki J. Kervinen of ABB discusses the influential role AC drives can play in meeting these challenges. 09 November 2009
The Marmaray project, linking the European and Asian sides of Istanbul will be the world’s deepest immersed tube tunnel. The industry’s drive to create ever deeper tunnels has placed increasing demands on dewatering and construction equipment. Tsurumi rose to the challenge with its ‘puddle sucker’ LSC series. 06 November 2009
Running pumps as turbines is a well-known concept in the water supply industry. It is seen as an efficient method of generating power as well as recovering energy and contributing to savings. The payback period can be as short as three years and there is the added benefit that pumps are less complicated to operate than turbines. Bryan Orchard reports. 06 November 2009
While peristaltic pumps can be found in many water industry applications, there are specific gearbox requirements, making traditional transmissions unsuitable. Jon Snaith, of Brevini UK, argues the case for planetary gear boxes, which are low maintenance and have compact gearboxes capable of high reduction ratios. 28 October 2009
Even in these difficult economic times, health and safety issues must remain a key area of concern for the wastewater treatment industry. Ian Hallows, from Waste-Tec products at NOV Mono looks at what solutions are being developed to help treatment plants meet stringent legislation in this area while continuing to stay cost efficient. 09 October 2009
Engine wash-unit manufacturer Harry Major Machine was on the lookout for a pump that could handle recycled water containing small particles. Following a series of tests, Hydra-Cell was able to demonstrate that its products could remove carbon deposits from crankshafts and combine high levels of performance with reduced running costs. 09 October 2009
The terms of the 1997 Kyoto Protocol, coupled with rising energy costs, has led to a radical rethinking about how pumping efficiencies can be improved using control strategies. Pump control specialist Retroflo has responded with a ‘breakthrough' system-wide pump control technology, as company founder and operations director Andy Laundon explains. 08 September 2009
In January 2006, World Pumps published a feature on external gear pumps for metering sodium hypochlorite and other wastewater treatment chemicals. Here, a US wastewater treatment company found that an external gear pump was so successful that they have been used to meter sodium hypochlorite ever since. 08 September 2009
During the last 50 years, an expanding population coupled with a dwindling water supply have made it increasingly crucial that everyone on the planet has access to safe drinking water. LIFELINK, a Grundfos company, describes how its water supply systems in rural Africa could offer a sustainable way of achieving this for the next 50 years and beyond. 08 September 2009
The essential need of the wastewater industry to accurately control sewage-pumping stations at a minimum cost has driven pump control technology to new heights of sophistication. Non-contacting ultrasonic measurement is the key to success, as Pulsar Process Measurement's Keith Flint explains. 07 September 2009
Wet scrubber FGD plants play a critical role in reducing emissions of sulphur dioxide from coal-burning power stations. However, the abrasive and corrosive wet limestone slurry used in this process demands pumps of high levels of reliability. Wernert pumps distributed by AxFlow in the UK provided the answer for one European power station. 01 September 2009
Retroflo’s RPC_2000 pump control system can not only give energy and opeartional savings to the water industry, but also represents a breakthrough in the drive to reduce emissions. 29 July 2009
Veolia Water Solutions relates what desalination companies require from the pump industry. 23 July 2009
How a sewage pumping station virtually eliminated blockages and vastly reduced operational expenditure by fitting a pump control system from Retroflo. 21 July 2009
Despite the tight credit markets and challenging global economy, 2008 saw further consolidation within the pump sector. Listed below are the transactions that took place during the first and second quarters of 2008. Third and fourth quarter deals were published in the February 2009 issue of Pump Industry Analyst. Subscribers to Pump Industry Analyst have access to a 4-year archive on the website as part of their annual subscription. 03 June 2009
As the world’s population rises and developing countries improve their standards of living, there will be an ever increasing demand for fresh water. One option is sea water desalination. Here, we take a look at the main types of desalination and some of the technology meeting this need. 26 March 2009
Clogging, or ‘ragging’, is a major headache for operators of sewage pumping stations, and can be very costly in terms of downtime and possible sewage pollution. Prof. Dr.-Ing. Paul Uwe Thamsen of TU Berlin – Fluidsystemdynamik explains how recent research may change all this. 25 March 2009
With the cost of replacement parts increasing each year, two wastewater treatment plants in Ireland and Wales wanted to find an alternative that would improve efficiency and reduce maintenance and whole life costs. Mono's Universal Parts range provided a cost effective alternative to branded progressing cavity pump parts. 20 March 2009
The terms of the 1997 Kyoto Protocol, coupled with rising energy costs, has led to a radical rethinking about how pumping efficiencies can be improved using control strategies. Pump control specialist Retroflo has responded with a ‘breakthrough' system-wide pump control technology, as company founder and operations director Andy Laundon explains. 20 March 2009
Corrosion is the greatest problem encountered in stainless steel structures widely used in seawater pumps - even specialised brine pumps such as those used in desalination, oil & gas, chemical, thermal and nuclear power plants. Here, M Miyasaka and H Yakuwa of Ebara discuss the solutions currently on offer for surmounting crevice corrosion and take a look at the latest advances in this field. 20 March 2009
Throughout the Middle East and Arabian Gulf, multi-stage flash evaporation desalination is very much the preferred technology for the production of potable water. Several factors contribute to this, the key ones being the abundance of waste heat and the corrosive nature of the region's seawater. Bryan Orchard looks at how one company, Japan's Ebara, has addressed the issue of seawater intake pumping. 20 March 2009
In the pumping industry, contractors often meet with difficult operating conditions, such as tunnelling deep underground or particularly abrasive pumping media. However, pumping in extremely cold conditions, such as near-zero temperatures, comes with its own particular risks. Stefan Hörnschemeyer of Tsurumi Pumps offers practical advice on what to do when the temperature drops. 05 March 2009
One of the things that often are crucial at a construction work site is the dewatering issue. Groundwater from surroundings as well as rain can flood the whole site if not dealt with properly. When digging below the water table, the amount of water entering the site from the surrounding can be quite large, but this depends on the environment. Ola Hällgren presents an introduction of the role of submersible pumps in controlling the water level. 05 March 2009
Until now, the choice between electric-driven or diesel-driven pumps for dewatering applications has not been an even contest. However, rising fuel costs have forced many engineers to re-consider their choice. Here, Roland Berns of BBA Pumps BV argues that in spite of the initial higher purchase price, diesel-driven pumps will pay their costs back many times over in fuel savings. 05 March 2009
Modern reverse osmosis desalination plants operate with high base load capacity and therefore the mechanical reliability and efficiency of high-pressure membrane feed pumps deserve thorough consideration. Production losses due to mechanical failure or higher energy consumption due to lower hydraulic efficiency can be significant factors in the plant operating costs. Miguel Angel Rivas, product portfolio manager for Sulzer Pumps, discusses the options available. 05 March 2009
The largest civil engineering project in Ireland entailed building a road tunnel under a roaring tidal river. The massive components had to be prepared in advance and floated into place. This involved moving thousands of gallons of water, so SPP Pumps were brought in to make the crossing possible. 02 March 2009
A food processing plant wanted to find a way to meet odour control regulations without breaking the bank. A range of progressing cavity pumps from Mono made it possible to enclose completely the processed meat and improve the working environment at relatively low cost. 02 March 2009
The pumping station at a European holiday park was old and in need of replacement. To transfer the site's wastewater and effluent effectively, the park decided to replace its current system with a package from pump specialist Mono NOV. 02 March 2009
A biogas plant required a solution to keep its digestion process working efficiently, ensuring that food waste was reduced down to comply with regulations governing animal by-product disposal. Mono's TR Muncher fitted the bill, reducing the waste to an homogenous product. 02 March 2009
Large buildings are prone to enormous variations in their water use. Any new system would need to match these variations using the least amount of energy. Here's how the world's largest commercial building met this challenge with a system that will not only pay for itself on energy-savings, but will also pay the costs to replace itself in its lifetime. 02 March 2009
When a Croatian hotel needed a wastewater treatment plant installed on site, but had no existing connection to the municipal sewer tunnel system, a bespoke plant was the only realistic option. A system of modular PE sewage treatment tanks with six Tsurumi submersible aerators was a cost effective solution that also met local noise level requirements 02 March 2009
When a Croatian hotel needed a wastewater treatment plant installed on site, but had no existing connection to the municipal sewer tunnel system, a bespoke plant was the only realistic option. A system of modular PE sewage treatment tanks with six Tsurumi submersible aerators was a cost effective solution that also met local noise level requirements. 02 March 2009
One of the more challenging applications for a pump is the hazardous conditions on an oil rig out at sea. A European oil and gas equipment manufacturer ensured that pump operators were safe by using a range of Bosch Rexroth products to remotely control its diesel engine-driven pumps. 02 March 2009
Multiphase boosting is widely accepted by major oil companies. When a large-scale oil project in Algeria prioritized high reliability and safety of the whole pump system and required a single point responsibility, it looked to German manufacturer Bornemann Pumps to provide a solution. Specialists in twin-screw technology and multiphase boosting, the company was on hand to demonstrate its strength as a pump supplier and as a partner for turnkey solutions. 02 March 2009
At a European sewage treatment works, operations relied on the efficiency and productivity of the re-circulating scrubber liquor pumps that control odour. Fluid handling systems specialist, AxFlow, supplied equipment and a decade on the company returned to see if its pumps had stood the test of time. 02 March 2009
A deteriorating water supply system on Toas Island in Venezuela made it necessary to install a large reverse osmosis desalination system, designed by the WET division of ITT. A steady stream of potable water is now available for the island residents. 02 March 2009
Today the demand for water is higher than ever. While changing rain patterns have caused difficulties, it is the rise in urban populations and the intensity of use that is causing the main shortages. When Singapore moved toward becoming less reliant on imported water, its water agency PUB, developed an integrated water management approach. Here's a brief update on the recent technological advancements on the Island. 02 March 2009
At the smelter of a platinum group metals producer in South Africa, a new pump was required to transfer highly abrasive materials and keep the slurry in motion during the processing of ore. The company decided to install three peristaltic pumps designed to withstand the demands and capacity of pumping slurries. 02 March 2009
Mining salt often leaves caverns that have to be filled to stabilize them once extracted. One method is to fill these caverns with tailings produced during the salt purification process. A hydraulic, quadruple-action piston membrane pump, ideally suited for abrasive liquid media, from ABEL was found to be the best solution to transport the packing from the hopper into the mine via a pipeline. 02 March 2009
Various wastewater treatment processes require the controlled dosing of chemicals into the process stream either to assist the treatment or to remove undesirable elements. In order for the dosing pumps to work efficiently, works operators need to be constantly aware of what is happening in the treatment process so that dosing levels and speeds can be adjusted accordingly. UK-based Partech Instruments has developed feed forward control systems employing on-line analysers in the inlet stream to send real-time data to a dosing control system for automatic adjustment of the dosing pump. Bryan Orchard reports. 02 March 2009
Rainwater leachate from metal and chemical industrial process waste is extremely dangerous and creates a highly inhospitable environment for pumps. Tsurumi supplied its cast iron KTZ pump range for transporting the highly corrosive liquid and matched the client's requirements for a lightweight and robust product. 02 March 2009
A ski-ing resort in Colorado has to cope with a dramatic increase in population during its busy winter season. Its wastewater plant required a range of wastewater pumps that could not only meet the increased demand but work at more than 1.7 miles above sea level. Engineers at the plant found that Gorman-Rupp's T3 range improved prime and made maintenance easier. 02 March 2009
UK titration specialist Metrohm has released a method to determine melamine in milk powder and other food using ion chromatography after inline sample dialysis. 24 February 2009
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