Between 1986 to 1999, UGL was originally contracted by Singapore's Public Utilities Board to design and construct two water treatment plants, plants A and B, which used conventional coagulation, sand filtration and chlorine disinfection as the main treatment process. An additional water treatment plant, plant C, was commissioned in 2001 to increase treatment output and was developed with more advanced ozonation and biological filtration. But, due to the increasing water quality standards set in place by the World Health Organization, new requirements of water treatment was calling for the removal of cryptosporidium from the drinking water.
Singapore's Public Utilities Board needed the treatment plants to be upgraded to meet the new standards enacted by WHO, which was also influenced by more strict standards set in place by the US Environmental Protection Agency. Both specifications required additional treatment to achieve higher rates of cryptosporidium removal, a waterborne disease. With that being said, UGL was contracted to improve the water treatment plants to meet these standards.
The Solution
UGL began upgrading the Johor River Waterworks treatment plant that included the installation of ultraviolet (UV) disinfection systems to reach at least 4 log inactivation of the waterborne disease cryptosporidium. In addition to this upgrade, UGL improved the existing sand filtration backwash processes to further enhance water quality. With the other improvements, the entire system was rated to achieve a minimum of 99.9997% removal of cryptosporidium and filtered water turbidity less than 0.15 NTU.
The improvements to the water treatment plant satisfied Singapore's Public Utilities Board and further enhanced the water quality for the country!
Singapore's Public Utilities Board needed the treatment plants to be upgraded to meet the new standards enacted by WHO, which was also influenced by more strict standards set in place by the US Environmental Protection Agency. Both specifications required additional treatment to achieve higher rates of cryptosporidium removal, a waterborne disease. With that being said, UGL was contracted to improve the water treatment plants to meet these standards.
The Solution
UGL began upgrading the Johor River Waterworks treatment plant that included the installation of ultraviolet (UV) disinfection systems to reach at least 4 log inactivation of the waterborne disease cryptosporidium. In addition to this upgrade, UGL improved the existing sand filtration backwash processes to further enhance water quality. With the other improvements, the entire system was rated to achieve a minimum of 99.9997% removal of cryptosporidium and filtered water turbidity less than 0.15 NTU.
The improvements to the water treatment plant satisfied Singapore's Public Utilities Board and further enhanced the water quality for the country!