Day: 8 May 2006
Rebuild for world’s largest underground WWTP
Plans to expand residential, commercial and business faciliites near to the world's largest underground wastewater treatment plant in Stockholm, Sweden, necessitated rebuilding the plant. Johnny Stohne, senior engineer for SWECO, reports on the £30 million project, which includes new mechanical treatment, transportation and ventilation facilities.
Hydrometeorological measuring network for Vienna
Optimisation of Vienna's sewage management system necessitates collection of accurate and detailed meteorological information on precipitation. Carolin Melischek of Austrian instrumentation specialist Logotronic explains how the company is supplying measurement stations based on its most advanced datalogger.
Thermal dried sludge meets EU standards
Efficient sludge management is facing the twin challenges of more stringent land disposal regulations and an increase in the quanity of wastewater. Doris Thamer, senior sales manager, and Werner Jenewein, senior process manager, of Austrian sludge specialist Andritz claim that drying technologies can meet both these demands.
San Diego’s mega-tank reaches completion
Increasing demands on both quality and capacity at the Alvarado Water Filtration Plant in the US city of San Diego, California, meant constructing the world's largest circular, prestressed concrete storage tank. Judy Horning of US tank manufacturer, DYK, describes the challenge of meeting not only the highest standards for potable water storage but also of making the tank earthquake resistant.
Rig training goes well in Ghana
Like much of sub-Saharan Africa, many parts of rural Ghana do not have a safe, reliable water supply. Anders Dahlsberg, an engineer with UK drilling specialist Dando, reports on a trip to the north-east of the country where he commissioned and set to work a waterwell drill rig and, just as importantly, trained the crew.
China gets to grips with groundwater
The knowledge and technology that China requires to manage its groundwater more effectively is being provided by experts from the Dutch environmental consultancy and research organisation, TNO Environment and Geosciences. Jos de Sonneville, manager of business development - subsurface and water, at TNO, explains how experience gained in South Africa and elsewhere is being applied in China.
Aral Sea Project I reaching completion
Images of fishing boats stranded on the desertified, salt-encrusted bed of what was formerly the Aral Sea, the world's fourth largest inland lake, caused widespread shock when they came to public attention in 1997. Michael Haigh, divisional director in Mott MacDonald's Water and Environmental Management division, reports exclusively for World Water on the first phase of the Aral Sea Basin Project, which is designed to secure the existence of the North Aral Sea, sustain and increase agriculture and fishing, and improve human health.
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