Ultraviolet (UV) Treatment

Singapore wastewater reuse plant to use Xylem UV

Water technology company Xylem will supply ultraviolet (UV) disinfection solutions to a major municipal water reclamation facility in Singapore, as part of a $500,000 contract.

The second Changi Water Reclamation Plant will include microfiltration, reverse osmosis and Xylem's Wedeco Spektron 2000e UV disinfection system and is an initiative of the Singapore Water Reclamation Study, also known as the NEWater Study.

As a result of the extensive treatment including Xylem's Wedeco UV disinfection solution, the city's industrial sector and communities living in the east of the city will benefit from an additional 228,000 tons (50 million gallons) of reclaimed water per day.

Currently up to 30% of Singapore's water needs are met by reused water, with a target of 55% by 2060.
www.xyleminc.com

Ultraviolet technology inactivates cryptosporidium as part of Texas reuse project

To counter a stage 5 drought, Wichita Falls city officials in Texas decided to treat and purify wastewater so it could be reintroduced into the potable water supply. The city built a 13-mile pipeline from the wastewater treatment plant to the drinking water plant, installed advanced treatment equipment including membranes and reverses osmosis and began extensive testing by the Texas Commission on Environmental Quality (TCEQ) to ensure the water was meeting treatment goals. The project went online in July 2014 under a temporary emergency permit serving a population of just over 100,000 using a 50-50 blend of treated wastewater and lake water. As the temporary emergency permit timeline came to an end, the city requested an extension on the project. In order for the Direct Potable Reuse (DPR) project to be extended, the Texas Commission on Environmental Quality required the installation of a UV treatment process to act as an additional barrier for Cryptosporidium inactivation. The TrojanUVSwiftECT was delivered to Wichita Falls in order to support the city and its DPR project. By February of 2015, Wichita Falls had commissioned the system, allowing the city to receive a one-year extension on its DPR project. www.trojanuv.com

UltraViolet tech designed for Haz gas environments

Neptune Benson has designed and implemented a ultraviolet (UV) system for the God's Lake First Nation Reserve in Manitoba, Canada. The installation, designed for disinfecting wastewater, presented unique challenges due to requirements that the equipment worked safely within an environment where explosive gases may occur during normal operating conditions.

Corex Water Systems, the contractor building the facility, asked Neptune Benson to supply an ETS-UV system that would meet the necessary requirements and also be independently certified to perform safely.

To address this, Neptune Benson's ETS-UV design team developed Intrinsically Safe (IS) components to prevent any explosion hazard, and the complete UV system was then certified by a third party as suitable for use in a hazardous environment.
www.neptunebenson.com

UV rig helps United Utilities rid crypto bug

The first of several ultraviolet (UV) rigs, capable of killing the last remaining traces of the cryptosporidium bug will be installed in parts of Lancashire.

The UV technology is being used in strategic locations across the network following a detailed analysis of how the cryptosporidium bug is working its way through the system.

United Utilities said installing the rigs is one of its biggest ever engineering projects, with rigs and equipment having been sourced from across the UK and Europe.

The water company hoped the rigs, alongside a flushing of the network and a storage reservoir cleaning programme, will enable it to end the boil water notice issues to customers. The notice will only be lifted following consultation across Lancashire. In the meantime, the precautionary advice to boil water remains in place.
www.unitedutilities.com