Industrial UV disinfection systems

Water technology company Xylem has unveiled the Wedeco Spektron Industrial UV Disinfection Systems, designed specifically for use in sensitive processes, such as those typically required in the food and beverage or pharmaceutical industries.

Spektron Industrial forms part of the Wedeco brand, a premier manufacturer of ultraviolet (UV) disinfection and ozone (O3) oxidation systems.

“With more than 35 years of experience Wedeco understands the customer needs and combines high efficient UV lamps, superior control and monitoring equipment together with extensive third party testing to the most stringent standards in the world (DVGW, UVDGM and OENORM). This makes chemical free disinfection reliable, safe and economical”, said Philipp Raichle, Xylem’s Product & Applications Manager – Filtration, for the Oceania Region.

Spektron Industrial systems use closed-vessel UV reactors with Wedeco Ecoray UV lamps and ballasts, which make them highly sustainable while assuring consistent quality of disinfection without added taste or colour. The Ecoray technology in particular can provide energy savings of up to 20 per cent due to its optimised hydraulics and variable power control. In addition, the lamps achieve a high output with minimal maintenance requirements and contain less mercury than similar technologies on the market.

“Wedeco’s UV Disinfection Spektron Series has just been made more complete and got additional units within the series to address particular needs from the industrial sector, such as food and beverage,” said Raichle.

As with other disinfection solutions in the Wedeco range, the Spektron Industrial Systems include a standard EcoTouch controller and OptiDose closed-loop control, which monitors operating conditions such as flow, UV transmittance, and UV intensity in real time. For added efficiency, the controller can adjust the energy consumption of the Spektron Industrial models depending on the dosing requirements.

Systems are available in four models, ranging from 28m³ per hour to a maximum flow of 150m3 per hour, to meet customer needs. Featuring an improved inner surface, compact stainless steel cabinet and hygienic flanges, the series delivers reliable and accurate disinfection, in-line with strict hygiene requirements – potentially of benefit to the food and beverage or pharmaceutical industries and processes such as microelectronics.

Australian water filtration tech wins $500k award

UTS scientists have developed a low-cost, easy-to-operate water filtration system to remove arsenic and deliver safe and clean drinking water. The project won a Technology Against Poverty prize of $500,000.

Professor Saravanamuth Vigneswaran and Dr Tien Vinh Nguyen from the University of Technology Sydney (UTS) faculty of engineering and IT received the prize for their project to remove pollutants from groundwater in the Red River Delta of Vietnam. This densely populated area is beset with serious public health issues caused by high levels of arsenic in the groundwater.

Arsenic poisoning is a slow process, with people often unaware they are being poisoned as they suffer major health problems including cancers, gastrointestinal disorders, muscular weakness, nerve tissue injuries, blackfoot disease and intellectual impairment.

Current systems are neither cost-effective nor efficient at removing arsenic. The UTS team is working with Vietnamese partners on a local solution to a local problem in an area of about 20 million people. Partners include the Vietnam National University (VNU), Vietnam Academy of Science and Technology (VAST) and local manufacturers.

The scientists are deploying inexpensive technology to provide a model for clean water, which can be adopted worldwide to improve water quality for more than 130 million people in the 70 plus countries worldwide experiencing toxicity from naturally occurring arsenic.

“There are three key components to this system: an organic membrane, a tank/drum in which the membrane is inserted, and an absorptive cartridge made from locally available industrial waste products,” said Vigneswaran.

Local manufacturers can produce, install and maintain the membranes and the cartridges, creating local jobs in an area of high population growth, according to the scientists.

“The filtration can be powered by gravity or solar or by hand pump. Membranes will last up to three years, while the cartridges absorb the arsenic and are periodically replaced with new ones (every three to six months). The waste cartridges will be turned into safe building materials, so the system safely disposes of arsenic waste,” said Vigneswaran.

The system will also remove bacteria and solids from the contaminated groundwater, delivering water that is clean and safe to drink, and is scalable: for example, a 10-cubic-metre system will provide uncontaminated water for 100 people.

“This sustainable system will both maximise locally sourced resources and minimise arsenic waste and environmental pollution, improving health and quality of life,” said Vigneswaran.

Council partnership shows how ultra-filtration can benefit Australia’s water resources

Municipal councils all over Australasia are seeking optimum ways to address challenges posed by water resources declining both in quantity and quality under pressure from local populations and the needs of industry and agricultural users.

Such demands are compounded further as environmentally and health-aware public authorities simultaneously seek to deliver quality water services while playing their part in conservation by making best use of their areas’ shared water resources.

One council that has successfully used advanced ultra-filtration technology to deliver a high standard outcome for its district is Wakool Shire Council which draws its water from the Murray River and treats it in the small town of Tooleybuc, NSW, right on the border with Victoria.

Working together with CST Wastewater Solutions’ delivery partner Envirotech Water Solutions, Wakool Shire Council replaced the old plant with a new ultra-filtration plant to provide potable water for Tooleybuc’s town water supply. The entire plant was installed in just 2 weeks of on-site work and achieved results exceeding Australian standards.

“It was an outstanding outcome to be able to work with the council to complete the work so efficiently within a narrow timeframe. Wakool Shire Council are very happy with the installation, which uses technology widely applicable to the many councils facing similar issues,” says Mr Damien Abbott, Business Development Manager – Victoria, CST Wastewater Solutions.

“Another big advantage for councils like Wakool is that on-site attendance and maintenance is very low, with only one day a week being required. This produces both cost-efficiency and OH&S benefits,” said  Abbott.


The new plant has a capacity of 0.5 ML/day (over 20 hours) with a peak flow of 6 l/s. The water is treated for turbidity, colour, protozoa and viruses using CST’s advanced ultra-filtration technology. The technology reduces turbidity from 8 NTU to <0.1 NTU and colour from 15 to 5. Australian drinking water standards specify that acceptable drinking water needs to be <5 NTU and <15 true colour*, so the Tooleybuc plant well exceeds these standards.

“Improving turbidity by over 80 times and significantly reducing the colour to exceed Australian Standards is an excellent result for the project, which is widely applicable to councils and municipalities across Australia,” said  Abbott.

The Pentair X-Flow ultra-filtration plant installed at Tooleybuc is a new generation of low-pressure membrane filtration technology engineered to produce water from all kinds of water sources using ultra-filtration (UF) and, more recently, Nano-filtration (NF).  X-flow’s strength is the integration of critical process steps to ensure a Fill Circle Membrane Technology partnering approach encompassing all key process and operational steps including membrane manufacture, engineering design, installation and commissioning support and ongoing operational support.

*Based on Australian Drinking Water Guidelines Version 2.0 (Updated December 2013)