De Nora UV technology has been selected for the refurbishment of ultraviolet disinfection systems at PUB’s Johor River Waterworks, supporting Singapore’s drinking water supply.
Industrie De Nora has been selected to supply Sentinel UV technology with upgraded electronic ballast systems for the refurbishment of ultraviolet disinfection systems at PUB’s Johor River Waterworks.
The project was awarded by Flotech Controls, PUB’s appointed contractor, and is scheduled for installation in 2027.
Johor River Waterworks is owned and operated by PUB, Singapore’s National Water Agency. Under the 1962 Water Agreement, Singapore can draw up to 250 million gallons of water a day from the Johor River.
De Nora UV technology selected for Singapore water supply asset
The existing UV systems at Johor River Waterworks were originally commissioned in 2011 and have provided disinfection as part of a critical asset supporting Singapore’s drinking water supply.
With the systems approaching the later stages of their operational lifespan, PUB commissioned a tender for their replacement or refurbishment to support long-term reliability.
Flotech Controls proposed a refurbishment and retrofit approach supported by De Nora, particularly because of space constraints within the building that houses the existing UV systems.
The project forms part of De Nora’s Sentinel retrofit programme, which supports modernisation of system performance while retaining core infrastructure.
UV system retrofit aims to reduce disruption and waste
De Nora said the retrofit approach allows key system components to be reused, helping reduce material consumption, waste and the project’s carbon dioxide footprint.
The upgraded system is expected to deliver enhanced operational performance, including extended lamp life and a reduced footprint within the existing installation.
Flotech Controls selected De Nora’s Sentinel UV system because of its performance in medium-pressure applications, ease of maintenance and ability to be retrofitted into existing infrastructure without full system replacement.
De Nora says its Sentinel UV systems are designed for drinking water and potable reuse applications, using ultraviolet disinfection without the use of chemical disinfectants.
Johor River Waterworks remains key imported water source
Johor River Waterworks treats imported water from the Johor River, which forms part of Singapore’s water supply system.
PUB says the Linggiu Reservoir, located upstream of Johor River Waterworks, releases water into the Johor River to support reliable abstraction of raw water at the plant.
The 1962 Water Agreement between Singapore and Malaysia is due to expire in 2061, according to PUB.
The refurbishment project therefore supports a long-standing imported water source at a time when utilities are placing growing emphasis on reliability, resilience and asset life extension.
Sentinel UV system designed for retrofit applications
De Nora said its medium-pressure UV technology is designed for demanding drinking water applications, with a focus on disinfection performance and simplified maintenance.
The company said the approach enables utilities to modernise critical systems efficiently while minimising disruption.
De Nora’s official announcement said the selection reflected water operators’ preference for technologies combining dependable performance, straightforward operation and serviceability.
For more coverage of water treatment technologies, visit H2O Global News’ Water Treatment section.
Source: De Nora
