De Nora wins one of Asia’s largest water disinfection projects at Johor River water treatment plants in Singapore


SINGAPORE, November 30, 2021 / 24-7PressRelease / – De Nora – the world leader in electrochemistry, pioneer in disinfection and water filtration – announces the winning of one of the largest disinfection projects in the world water in Asia at the Johor River Water Works, the largest water treatment plant located in Malaysia.

Provide Johor River Water Works with an on-site hypochlorite generation system

This project will see a De Nora ClorTec® 2250 on-site hypochlorite generator replacing the existing liquid chlorine and ammonia systems at Johor River Water Works. In total, De Nora will supply 11 ClorTec® 2250 units to the three factories on site. Each unit will have an electrolyzer capacity of 1020 kg / day, exceeding the tender requirements of 900 kg / day.

This victory builds on other successful projects with the leading water utility in Singapore, where De Nora ClorTec systems have been installed in several locations, including Chestnut Avenue Waterworks, located in western Singapore.

De Nora ClorTec 2250 on-site hypochlorite generation systems use three common consumables – water, salt and electricity – to produce chlorine-based disinfectants by passing a sodium chloride solution through a cell electrolytic and converting chloride ions into sodium hypochlorite. It provides a safe, economical and efficient solution for treating drinking water without creating or transporting hazardous chemicals, ensuring the safety of staff and the surrounding community.

As part of the bidding process for the Johor Water Works project, ClorTec 2250 systems had to meet stringent performance and efficiency targets in Factory Acceptance Testing (FAT) over a relatively short period of time. six months. The formation of by-products such as chlorate, perchlorate and bromate is of particular concern to the end user. These by-products are emerging contaminants of concern in water sources globally, and awareness of these contaminants is increasing across Asia.

De Nora ClorTec on-site hypochlorite generation systems are optimized to help minimize the production of these by-products, especially chlorate. In tests at Chestnut Avenue Water Works, De Nora showed that on-site hypochlorite generation systems produced by-products such as chlorate and perchlorate four to six times lower than the established recommended value. These tests have been certified and approved by the operation in charge of Chestnut Avenue Water Works.

“We are delighted to provide Johor River Water Works with a safe, economical and efficient solution to generate hypochlorite on site,” said Marwan Nesicolaci, Managing Director, Asia Hub at De Nora Water Technologies. “This victory is a testament to our continued commitment to provide innovative solutions for water treatment in the region, and we look forward to our continued partnership with other partners across Asia-Pacific.”

New and improved De Nora ClorTec on-site hypochlorite generation system

Benefiting from over 95 years of electrochemical expertise, De Nora on-site generation systems feature market innovations including improved efficiency, remote monitoring, and simple installation and maintenance. At the heart of every De Nora electrochlorination system is the DSA® electrode technology developed by De Nora.

The third generation De Nora ClorTec on-site sodium hypochlorite generator uses an optimized electrochlorination process which results in a 15% saving in operating costs compared to the previous system.

The ClorTec 2250 unit at Johor River Water Works is expected to be operational by March 2023.

About De Nora
De Nora has been a global supplier of sustainable technologies and a partner of choice for industrial electrochemical processes and water and wastewater treatment solutions since 1923. Driven by a philosophy of continuous improvement, De Nora provides electrodes, advanced electrochemical systems, filtration and disinfection. technologies to solve the most difficult applications for public health, municipal, marine, industrial water / wastewater treatment needs. Today, De Nora is committed to developing unconventional solutions to face the energy transition towards decarbonization, the hydrogen economy, guaranteeing clean water for all. Over 1,600 people provide the energy and expertise to fuel this exciting journey.

More information on

Press release service and press release distribution provided by


Comments are closed.