Day: 1 November 1999

Wedeco ozone and UV plant at Bryn Colwyd

A Wedeco UV and ozone disinfection system has been installed at Bryn Colwyd WTW in Wales. The raw water, from Lyn Colwyd reservoir in Snowdonia, needs a high level of treatment in order to maintain the quality of the final supply.

Palermo goes for PE

One of the largest water supply projects in Europe is currently underway in Palermo, Sicily, using Georg Fischer Wavin's new PE 100 system. Report by Friedhelm Keller, product manager for water supply systems at Georg Fischer Wavin.

Small scale sewage disposal

On the southern edge of Wackernheim - a town between Mainz and Bingen above the Rhine valley - lies the 'Schneckenbangert' farmland site. A new residential estate is currently being developed for which a sewerage system using HDPE pipes and HDPE Friafit fittings from Friatec is being brought on line.

Advanced lamp technology brings UV solutions

Dr. Andreas Kolch and Dipl.-Ing. Ludwig Dinkloh of Wedeco AG and Jon Leech of Wedeco UK claim that a new low pressure UV lamp with variable output can result in reduced civil works and lower operating costs. Several WwTPs in the UK are currently being equipped with the new lamps, among them Preston, one of the largest European UV installations.

Polyester and ebonite linings protect against corrosion

Ceilcote linings from KCH Keramchemie are now being used in the Middle East to protect desalination equipment against corrosion.

RO membranes for low salinity water

DuPont launched two new Permasep HF Cartridge RO membranes for low salinity feed water at this year's IDA World Congress in San Diego.

Prospects for progress: the Arabian Gulf states

Abdulmajeed Ali Alawadhi from Bahrain's Ministry of Electricity & Water reviews current desalination practices in the Gulf and looks at future prospects for desalination in the region, arguing that further research on MSF is needed to bring costs down.

South Australia: the new water gateway

Mary Monro takes a look at water supply and sewage treatment in South Australia where the state-owned SA Water Corp has outsourced the O&M of a number of WTWs and WwTPs, saving state government costs in the process.

Will Scotland’s water industry ever be privatised?

Norrie Hunter asks Scottish environment and transport minister Sarah Boyack to explain her position on the future of the country's public sector water industry, which has been dominated by PFI projects in a drive to improve performance.

Customer pipes responsible for a third of leaks

A study of Lincoln's supply network by Anglian Water has shown that 29% of leakage is from customer-owned supply pipes and domestic plumbing, with a further 39% from stop taps. Anglian's leakage manager Willie Abu Judeh reports.

Disinfection system design must be site-specific

Portacel's contracts manager Neil Savage describes the important factors to be taken into account when designing advanced disinfection systems for WTWs.

Buenos Aires: the first six years

In May 1993, Buenos Aires and the 17 suburban districts around the city signed a 30-year concession contract with Aguas Argentinas, whose main shareholder is Suez Lyonnaise des Eaux. The concessionaire was charged with modernising and running the existing water and wastewater systems and extending the networks to connect residents who previously could not receive water, all at a total cost of $4Bn. Six years later, Peter Allison reports on the progress Aguas Argentinas has made.

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