About Us

Dayen Environmental Limited was founded in 1986 by Mr John Lee and Mr Kor Hock Lai. The company has since evolved into a leading environmental engineering company that specialises in the provision of integrated systems and solutions for waste and water treatment. Dayen has extensive experience and expertise in designing, building and implementing specialised equipment used in all aspects of waste and water treatment processes.

Dayen provides comprehensive solutions for clean water. We are a single-source provider of engineering, field construction, project management and operations and maintenance services to municipal, industrial and commercial customers.

Dayen designs and builds water treatment system packages for municipal and industrial customers, and undertakes Engineer, Procure & Construct (EPC) turnkey projects. In addition, we manufacture and trade environmental equipment for our customers. Dayen also invests in water treatment facilities under various schemes such as Design, Build, Own & Operate (DBOO), Build, Own, Operate and Transfer (BOOT), and Transfer, Operate & Transfer (TOT).

We harness the latest technology such as membrane in Membrane Bioreactor (MBR), Desalination and Ultra-pure water in our applications, but also use conventional treatment methodologies where appropriate. Our aim is to provide cost effective, efficient and value-added solutions to our clients. Our latest patented technology can treat produced water from offshore platform, separating oil from discharged water and reducing the average oil content of a discharge to less than 1ppm.

Dayen has successfully completed more than 800 jobs since our incorporation in 1986, with project value ranging from thousands of dollars to multi-million dollars. The scale and complexity of these projects demonstrate our technical and financial capabilities.