Combined UV Chlorine Dioxide Water Treatment

[Guest guest]

Very Interesting.

http://www.waterworld.com/index/display/article-display/5169117954/articles/wate\

rworld/world-regions/europe/2010/march-2010/Combined-UV-chlorine-dioxide-disinfe\

ction-system-benefits-Spanish-reuse-facility.html

Combined UV-chlorine dioxide disinfection system benefits Spanish reuse facility

BARCELONA, Spain, March 22, 2010 -- Spain's first-ever combined ultraviolet (UV)

and chlorine dioxide disinfection treatment system has been installed by Severn

Trent Services-Apliclor at a wastewater treatment plant in Reus – a site

operated by the municipal water company Aigues de Reus Empresa Municipal.

The disinfection system uses microwave ultraviolet technology combined with

Aquadiox chlorine dioxide generators to treat wastewater for a variety of reuse

applications, reducing the plant's effluent discharge volume.

The plant, which serves the wastewater treatment needs of communities in the

province of Tarragona, has a treatment capacity of 25,000 m3/day.

The MicroDynamics system uses microwave energy to energise UV lamps, which the

company said helps to generate " consistent-strength disinfection " .

The Aquadiox chlorine dioxide generator will produce chlorine dioxide on site to

provide residual disinfection, preventing bacteria from forming in the plant's

distribution network.

Sodium chlorite and hydrochloric acid will be used to generate the chlorine

dioxide solution. Severn Trent Services-Apliclor said the benefit of using

chlorine dioxide disinfection is that it reacts less with organic matter present

in the distribution network, thus eliminating odours and minimising the

formation of Trihalomethanes.

Rick Bacon, general manager of Severn Trent Services-Apliclor, said: " The

MicroDynamics system combined with the chlorine dioxide generators will provide

assurance for users that all water in the Reus network – including the water in

the pipes and at the point of use – is treated safely. "