Chemical Waste Treatment

Hong Kong's First and Only Integrated Hazardous Waste Treatment Facility

Improper disposal of and untreated hazardous waste can pose serious threat to humans, animals and the environment, such as water and air pollution, affect food supplies and cause illness, therefore it requires special collection and management safeguard.

Veolia Solution

One of the most comprehensive and sophisticated hazardous waste treatment facilities in Asia

The Chemical Waste Treatment Centre (CWTC) is the first and only integrated hazardous waste treatment facility in Hong Kong.
Being one of the most comprehensive and sophisticated hazardous waste treatment facilities in Asia, it is designed and operated according to very stringent international environmental and safety standards. It provides a cradle-to-grave solution for most of the land-based chemical waste generated in Hong Kong, disposal of clinical waste, as well as collection and treatment services for marine pollutants (MARPOL waste) generated from ocean-going vessels.

The CWTC is managed by a joint venture between Ecospace Ltd. and Kum Shing E& M Ltd. (EKJV) under a design-build-operate contract with EPD for a period of 15 years that commenced in December 2020. Ecospace Ltd. is wholly-owned by Veolia. Veolia provides useful and practical solutions for water, waste and energy management with the aim to be the benchmark company for ecological transformation. Veolia helps to develop access to resources, as well as preserve and replenish them. Ecospace has been involved with the CWTF since the 1990s.

Services provided by the CWTC include:

  • Consultancy service
  • Pre-acceptance tests
  • Door-to-door collection
  • Waste reception and verification
  • Chemical waste treatment processes include incineration, physical/chemical treatment, oil/water separation, and stabilization
  • Resource recycling and recovery
  • In-process monitoring tests
  • Clinical waste disposal
  • Mercury waste treatment
  • Emergency response services

Key Figures


Annual designed treatment capacity: 

Mercury waste: equivalent of

3.5 million pieces of lamps

Annual designed treatment capacity: 

Chemical waste: 100,000 tonnes

Annual designed treatment capacity: 

Clinical waste: 3,696 tonnes 

Energy recovered in 2022: