It was all smiles at the Newcomb Secondary College graduation celebration on Thursday night
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The police of Limburg in Belgium have arrested a gang of robbers composed of six members
Zonhoven and Kuringen. Five people are already in prison
while the sixth will appear this Wednesday afternoon before the investigating judge of Hasselt. Limburg police carried out an investigation following a burglary at a house in Beverlo
The gang was 'specialised' in house robberies
The stolen items consisted mainly of jewellery and money
Plenary Session Terminated after Tensions in Assembly Hall
Opposition MPs Climbed through Windows to Enter Assembly Offices
Tirana-Besiktas Match Suspended Due to Incidents
Strong Security Measures for Bill Clinton's Visit in Tirana
DP Accuses PM of Ignoring Albanians Living in Survival Conditions
• Caribbean island opts for UV instead of chlorine as part of its 'anti chemical' policy
The desalination plant is situated in Balashi
the site of old gold mill ruins and is located inland of Aruba's capital
Operated by Water-En Energiebedrijf Aruba N.V
the plant was commissioned in February 2000 and produces over 40 million litres (over 11 million gallons) of water per day
Occupying a space equivalent to half the length of a football or soccer field
the plant consists of plate heat exchangers in titanium installed in a vessel of considerable size
It was constructed in three 20 metre (67 foot) sections in Germany and shipped to Aruba
As part of its 'non-chemical' approach to water treatment, W.E.B. opted to use ultraviolet (UV) disinfection technology instead of chlorine to provide an additional treatment step for drinking water prior to distribution
UV technology from Dutch company Berson UV-techniek was selected for the project
Berson was chosen not just because it is based in the 'home country' (Aruba is an autonomous region within the Kingdom of the Netherlands) but because it is at the forefront of UV technology for municipal applications globally
A total of ten Berson InLine+ UV systems are currently installed on the island
Seven are used for disinfecting drinking water prior to distribution and a further two are used for treating wastewater prior to discharge
one system is used by the Dr Horatio Hospital to treat incoming drinking water as a precaution against Legionella
Two of the storage tanks situated around the island are also fitted with UV systems
which provide an additional disinfection step prior to distribution
One of these UV-fitted storage tanks is situated in the harbour and supplies cruise ships with UV treated drinking water
It is expected that all the tanks will eventually be fitted with UV systems
"Chlorine was originally considered as an alternative to UV but was rejected after concerns over costs and safety
Wastewater treatmentAruba is currently served by two wastewater treatment plants (WWTPs)
one at Parkietenbos on the west coast and another Zeewijk on the east of the island
The Parkietenbos WWTP processes wastewater brought in by septic tank trucks from the whole of the island
while the Zeewijk WWTP treats wastewater from San Nicolas
Both WWTPs use UV as a final treatment step prior to discharge
following various filtration and treatment steps including grit and fat removal
SBR (sequencing batch reactor) biological treatment and tertiary disc-type filtration
The Berson InLine+ UV system at Parkietenbos treats up to 75m³/hour while that at Zeewijk treats up to 200m³/hour
The quality of the final effluent from both sites is so good that some of the wastewater is used to irrigate two golf courses on the island
Strong interest in UV for other applicationsCommenting on the UV installations
Berson's Managing Director Andrew Clark says
"Since we delivered the UV systems to W.E.B
there has been a lot of interest in our non-chemical water treatment technology from other industry sectors on the island
a lot of businesses are interested in using UV-treated wastewater for hosing down their buildings
so keeping the exterior of buildings clean is actually a bit of a problem -- using desalinated potable water is expensive and wasteful
so high quality effluent is a viable alternative."
Berson is currently one of the few non-German UV system suppliers capable of providing a complete range of UV systems with capacities between 10 and 10,000 m³/hour
certified to the latest German DVGW*** norm
2 & 3 -- the highest standard currently possible in the world
The systems are also fully validated in accordance with the USEPA UV Disinfection Guidance Manual (UVDGM)