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Insights and Stories

Innovative Solutions for Wastewater Treatment

July 18, 2023

As one of Singapore’s largest toxic industrial wastewater treatment facilities, our Integrated Wastewater Treatment (IWWT) plant on Jurong Island plays an important role in supporting the city-state’s leading position in wastewater treatment and reuse.

Through continuous innovation, the plant has expanded its range of services while improving sustainability and producing higher-value products for customers.

With a capacity of 5,520 cubic metres per day (m³/day), our IWWT plant handles wastewater not just from Jurong Island – where we reclaim 4,600 m³/day of treated industrial wastewater – and mainland Singapore.

The plant has been treating a wider spectrum of wastewater streams receiving its Toxic Industrial Waste Collector’s license in 2020. Designed to handle differing complexities of wastewater to meet discharge compliance, the plant today has specialised capabilities to treat wastewater with high concentration of up to 19,000 milligrams per litre (mg/L) chemical oxygen demand, as well as high salinity of up to 50,000 mg/L.

By conducting stringent control measures and treatability studies for new wastewater streams, the plant has been able to expand its services beyond the petrochemical industry to pharmaceutical and semiconductor manufacturing companies in Singapore.

In line with our focus on sustainability, the plant also offers lower-emissions alternative treatments for difficult-to-treat wastewater. Compared to the conventional method of incineration, our IWWT plant uses biological treatment processes that generate a much smaller carbon footprint.

Furthermore, our plant recycles treated wastewater through the Effluent Recovery plant, producing a higher-value product that can then be supplied back to the customers.