Introduction
The Indonesian government awarded an international consortium, comprising Sumitomo Corporation and Toshiba Plant Kensetsu, a contract for a 2×65 MW coal-fired power plant for the city of Banjarmasin, located on the island of Kalimantan. This USD 300 million project was financed by the World Bank.
This project was truly unique and undeniable challenging due to many reasons, including: The salinity of the water source/the Asam River during the dry season, with the location being very close to the sea. This proximity causes a wide range of hourly changes in the quality of the raw water with the total dissolved solids varying from 30 to 27,000 mg/l, and the suspended solids varying from 5 to 690 mg/l.
Scope of Work
- Metito was responsible for the design and erection of the complete electromechanical works for this package, which comprised of the following treatment plants:
- River Water Treatment Plant with a capacity of 2×480 m3/h, incorporating solids contact clarification, sludge dewatering system and chemical handling facilities
- Seawater Reverse Osmosis Plant, constructed in 2 streams
- Brackish Water Reverse Osmosis Plant with a capacity of 360m3/day
- Demineralisation Plant for the Packed Bed process, with a capacity of 360 m3/day, comprising 2 streams of cation and anion columns followed by mixed bed polishers
- Ash and Coal Runoff (ACRO) Wastewater Treatment with a 12 m3/h capacity
- Metal Cleaning Wastewater Treatment Plant for boilers and air pre-heaters
- Sanitary Sewage Treatment Plant
- Skid-mounted cooling water chemical dosing packages
- Supply of chemicals for the operation of the water and wastewater systems and cooling tower
Key Benefits
- A total solution for the power plant water and wastewater treatment needs
- An efficient design that takes into consideration the varying quality of the feed water from seawater to muddy floodwater
- A novel technology and reliable design that meant trouble-free operation and minimum downtime
- Timely execution which was imperative for the startup of this power plant
- Full local support and customer service, in world-class quality, from a well-established company
