News and Articles
May 15, 2008
News
Focus on the environment − Most successful IFAT ever
“These results mean that IFAT is the world’s biggest and most important trade fair for environmental technology and services. Its international reputation is also impressively underlined by the presence of many high-ranking government delegations from all over the world,” said Eugen Egetenmeir, Deputy Managing Director of Messe München GmbH.
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May 15, 2008
Article
Behavior of over-cutting area injected by flyash surface-active agent mixture material
Lubrication can effectively reduce the needed thrust if a discrete layer of the lubricant is maintained between the pipe and the excavated soil. The lubricant must be designed to form a layer in the surrounding soil, be pressurized to overcome ground water pressure and stabilize the over-cutting area. Lubricant should fill the complete over-break void to minimize surface settlement. However, it was clarified that for a commercial lubricant to be effective, it is suggested that ingredients such as sodium and potassium be eliminated. As a result, for a lubricant to not lose its function as a support against the overburden pressure of an over-cutting area and to enable a reduction in thrust, it is necessary to develop a better quality lubricant which can overcome these problems as soon as possible. From this perspective, a lubricating material comprised of a mixture of the surface-active agent and flyash was developed. In this paper, in order to examine the characteristics and behavior of the flyash surface-active agent mixture developed for use as a lubricant, a fundamental investigation is performed.
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May 15, 2008
News
Water Resources Development and Management - Focus from BITS Pilani
Earth Day - April 22 - each year marks the anniversary of the birth of the modern environmental movement in 1970. Water is a basic requirement for all life, yet water resources are facing increasing demands from, and competition among, users.
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May 13, 2008
News
Finally! New international standard for measuring mixer performance
Prospective customers considering purchase of submersible mixers have always had a problem comparing and measuring performance. Traditional industry-wide specifications based on power input per volume do not take other important factors into account, like propeller efficiency and hydraulic results.
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May 09, 2008
News
Caterpillar announces entry into tunnel boring business with acquisition of Lovat Inc.
The purchase of an industry-leading company is a strategic fit that complements Caterpillar’s global business and fits well with Caterpillar’s long-term growth strategy.
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May 07, 2008
Article
Characterization of soil conditioning for mechanized tunnelling
The EPB tunnelling has achieved a higher number of application and this trend is clear both for large size machines and for small diameter machines. In order to extend the application field for EBP machines, the natural soil has to be treated with additives during the excavation. The results of a test program on different conditioned not-cohesive soils by means of slump cone test are presented in the paper. The water content and the amount of conditioning foam were varied in the tests in order to find the influence on the quality of the conditioned ground and how the foam and water contents influence the mix behaviour.
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May 06, 2008
News
IFAT 2008 − Record growth
IFAT 2008, the 15th International Trade Fair for Water – Sewage – Refuse – Recycling, which takes place from 5 to 9 May at the New Munich Trade Fair Centre, is setting new records.
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May 02, 2008
News
French Highway secured in unique HOBAS fashion
The French highway network spans almost 12000 route kilometers, 60% of which are administered in a concession system by private companies such as APRR (Autoroutes Paris-Rhin-Rhône). Thousands of metal culverts have been installed along the roads to channel water. More than 50% of these are steel circulars or arches. After being in service for 30 to 40 years, these culverts have reached their maximum lifetime and are at risk to collapse any time causing road ruptures as approximately 20 years ago: Road embankment, paving and culverts needed to be repaired immediately which required an expensive construction of temporary diversions for both water and traffic. As a consequence, the highway companies conducted an extensive inventory.
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Apr 30, 2008
Article
Reducing water losses by intelligent VAG pressure management
Leaks in water pipes and leaking valves in urban water distribution systems and pipeline networks, mainly in developing and threshold countries, are the reasons for water losses of up to 50% in relation to the water quantity being produced in the water works.
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Apr 29, 2008
News
Upgrades on the way for Riverside Sewage Treatment Works
Plant will run entirely from renewable energy Thames Water is proposing to upgrade its sludge treatment facilities at Riverside Sewage Treatment Works, in Rainham, which will enable the plant to treat the solid waste left behind after the sewage treatment process and turn it into enough renewable energy to power the entire site.
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Apr 25, 2008
News
Robbins TBM completes drainage tunnels at Po Shan
A 3.5 m (11.5 ft) diameter Robbins TBM recently completed two drainage tunnels in Hong Kong without a conventional back-up system. Excavation of the short tunnels, measuring just 244 m (800 ft) and 165 m (541 ft) in length, concluded on March 17, 2008.
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Apr 23, 2008
News
Skimmer vessels smooth the way for the Boat Race
One year since the British government approved plans for a new super-sewer - the Thames Tideway Tunnel - to prevent sewage overflowing into the River Thames, Thames Water’s skimmer vessels – deployed as an interim measure to improve the quality of the river – have been hard at work sifting out litter and sewage-derived debris.
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Apr 22, 2008
News
The Spanish region of Aragon announces the largest regional water treatment plant in Europe at IFAT
The investment is in excess of one billion euros and will permit the sanitation of an annual volume equal to that of a large canal between Munich and Zaragoza. A pioneer management model is applied with the participation of the Government of Aragon and the private initiative, including companies such as ACCIONA WATER, AQUALIA, ATECMA, ISOLUX WAT, and the Temporary Unions of Companies (UTE by its Spanish initials) UTE Marcor Ebro-URBASER and UTE López Navarro-COMSA.
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Apr 21, 2008
News
IFAT 2008 − First-class Accompanying Programme
IFAT 2008, which takes place from 5 to 9 May 2008 in Munich is not only setting new records for exhibitor numbers and exhibition space, it is also featuring a top-quality Accompanying Programme on trade topics. In total over 350 speakers and chairpersons will be involved in around 300 lectures in the exhibitor forums and the symposium at this 15th International Trade Fair for Water, Sewage, Refuse, Recycling.
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Apr 18, 2008
News
Ditch Witch FM25 fluid mixing system released
The Ditch Witch® organization, the industry leader in the design and manufacture of underground construction equipment, announces the release of a new fluid mixing system, the Ditch Witch FM25.
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Apr 17, 2008
News
Insituform awarded $4.25 million contract to rehabilitate water main line on New York City's Madison Avenue
Insituform Technologies announced that it has been awarded a $4.25 million contract to rehabilitate a century-old water main line running beneath Madison Avenue in New York City, one of the busiest streets in the world.
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Apr 17, 2008
Article
Condition assessment of sewers - is digital image editing and processing becoming standard in CCTV inspection of sewers?
The use of digital image editing and processing has been increasingly entering optical condition assessment of sewers. Based on this technology further and new developments of the different inspection systems open up new fields of application and qualitative as well as quantitative statements on the sewer’s condition. The measurement functions that are connected to digital imaging provide new opportunities of reliable and realistic prediction and assessment of the condition. The following article presents the results of a study on an inspection system which combines conventional (CCTV) and digital image recording technology (so-called hybrid camera).
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Apr 15, 2008
News
Grundoram Taurus used for pipe exchange under the highway
Ian Logan of Directional Drilling working in the 'Middle East' contacted TT-UK to seek advice and recommendation on Pipe Ramming. With project details and an overview of the proposed 30" pipe installation understood, TT-UK soon realised, with their years of experience and knowledge of the region, that this was a task for their 'powerful' Taurus (450mm) Grundoram machine.
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Apr 10, 2008
Article
Development of a new high performance PE pressure pipe system, from design phase to reality
Since the introduction of the first PE pipe more than 40 years ago, PE raw material producers and pipe producers have continuously joined their efforts to propose better and better pressure pipe solutions to the end-users and installers. The development of modern installation techniques, in particular trenchless technologies, has created a need for improved systems, with enhanced insensitivity to installation conditions. Rehau and Borealis, have gathered their respective long expertise and knowledge in PE pipes and raw materials to develop a new pipe system with outstanding crack resistance to meet new market expectations and needs. This paper will describe the different steps the two companies have passed together, from analysis of the market needs to the first actual projects of the newly created RAUPROTECTII solution.
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Apr 10, 2008
News
Hydro offers sustainable stormwater treatment solutions at IFAT 2008 (Stand 103 Hall A1)
THE benefits of Hydro International’s unique advanced hydrodynamic vortex separation technology will be showcased through its portfolio of sustainable stormwater treatment and drainage solutions at IFAT 2008 (5-9 May).
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Apr 08, 2008
News
Water Environment Federation releases new Chinese version of "World Water & Environmental Engineering"
The Water Environment Federation (WEF), a U.S. based not-for-profit technical and educational organization, has released a new Chinese version of its international publication, World Water & Environmental Engineering. Targeting the Asian water and wastewater markets, this new magazine is an expansion of the European version and will be published in conjunction with WEF Publishing UK Ltd., London and Shanghai ZM International Exhibition Co. Ltd.
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Apr 07, 2008
News
Amsterdam Schiphol Airport 90 years old and in top shape
Schiphol is constantly being expanded and drained. A particular feature of the area is that it is 3 meters below sea level. With the skill of the Dutch in draining polders, this land was wrung from the sea around 1850. Draining the land today means different challenges need to be met: de-icing liquids used in the Winter are separated from the rainwater and drained off separately for environmental protection reasons.
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Apr 04, 2008
News
HOBAS bridging old and new Zagreb
The approximately 1 million inhabitants of Croatia's capital Zagreb can count themselves lucky to have high quality drinking water that is drawn from wells around the city area. It is hence the city council's utmost concern to retain the quality and to therefore preserve the river Sava and the groundwater reservoirs with a new Zagreb Wastewater Treatment Plant (ZWWTP).
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Apr 02, 2008
Article
Risks during the pull back operation of horizontal directional drilling
The success of the pull back operation of horizontal directional drilling can be increased by performance of a risk analysis. The problems, which might occur during a pull back operation, are varying from high pulling forces to uncompleted pull back operations and from slight coating damages to deteriorated pipelines. The nature of these problems is related to the pipeline-soil interaction. The pipeline soil interaction can be defined as the combined behaviour of the pipeline and the surrounding soil in terms of stresses and deformations. Consideration of all aspects of the combined pipeline soil behaviour formed the bases of a global risk analysis of the pull back operation. Besides high normal forces on the bore hole wall in case of small bending radii or irregular shaped bore holes, occurrence of obstacles and bore hole instability are identified as major risks during the pull back operation. The risk analysis resulted in a series of risk reducing measures for future horizontal directional drillings.
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Mar 31, 2008
News
Landmark onsite assembly of Robbins double shield completed
Onsite assembly of a massive 10.0 m (32.8 ft) Double Shield TBM has been completed in Andhra Pradesh, India. A ceremony was held on March 18, 2008 to mark the official launch of the Robbins machine - the first of two TBMs to bore a 43.5 km (27.0 mi) long water tunnel for the Alimineti Madhava Reddy (AMR) Project.
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