Facts & Figures

ClientTaiwan Water Corporation, Chinese Engineering Consultants Inc. (CECI)
IndustryDrinking water
Location Kaohsiung, Taiwan
Operation Start2004


Pre-treatmentPreliminary disinfection, flocculation and floc-removal
Post-treatment Filtration, disinfection, activated carbon filtration

The Client

TWC has decided to improve the water quality and extend the surface water treatment of Chen Chin Lake, with a production of 450,000 m3/day.

Project Description

The extension for the Chen Chin Lake waterworks consists amongst others a softening stage. The Crystalactor plant consists of concrete constructed pellet reactors, partially filled with a seeding sand. The pellets grow and move towards the reactor bottom. At regular intervals, a quantity of the largest fluidized pellets is harvested from the reactor and fresh sand material is added. It comprises of 8 concrete reactors with a surface area of 4.8 x 4.8 m and a height of 8.0 m. For the dosage of caustic soda, an innovative removable dosing racks have been installed.

Our solution

The Joint Venture in which Royal HaskoningDHV participated together with Chinese Engineering Consultants Inc. (CECI) was designated by TWSC as Client’s Representative. The total investment for the water treatment plant amounts to about 120 million Euro including the operation of the plant for 15 years.

Royal HaskoningDHV delivered the technology for Chen Chin Lake, the largest pellet softening plant in the world.