Centennial Technology is carrying out the water quality improvement project for Whasung City with its patented technology named Modular Surface Oxidation Unit with Artificial Grass which employs modular design with honeycombs substrates for surface microbial oxidation for quick installation and easy maintenance. The treatment system will be completed in August, 2010 and expected to treat stream water 4,200 ton/day with 60 % of treatment efficiency.