## Providing an **end-of-life solution** for hazardous waste management, including chemical, clinical and MARPOL waste treatment, all to strict international environmental and safety standards.

Veolia designs, builds, and operates CWTC in Tsing Yi, as one of Asia’s most comprehensive and sophisticated hazardous waste treatment facilities. 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 treatment
- Mercury waste treatment



 

 

 



 

 

   ![cwtc map](/sites/g/files/dvc4381/files/styles/default/public/image/2025/06/cwtc%20map.jpg.webp?itok=6PWQIlfj)   





 

 

 



 

 

 

 





 

 

 

 





***Annual Design Capacity of***  
**100,000 tonnes**

of chemical waste



 

 

 

 

 

 



 

***Annual Design Capacity of***  
**8,064 tonnes**

of clinical waste



 

 

 

 

 

 



 

***Annual Design Capacity of***  
**Mercury waste: equivalent of**  
**3.5 million pieces of lamps**



 

 

 

 

 

 



 

***Energy recovered in 2024***  
 **6880 MWh**



 

 

 

 

 

 



 

 

 





 

 

   ![White water](/sites/g/files/dvc4381/files/styles/default/public/image/2025/04/White_WATER%20-%20P.png.webp?itok=eEypIgt7)   



## Key Figures



 

 

 



 

 

 

 





 

 

   ![background](/sites/g/files/dvc4381/files/styles/crop_freeform/public/image/2025/04/background_0.png.webp?itok=3MQ1Tmq4)   





 

 

 

 

 





### Discover how Veolia transforms  
**other challenges into opportunities**



 

 

 



 

 

 

 





 [   ![STF](/sites/g/files/dvc4381/files/styles/content_push_teaser/public/image/2026/01/HK_STF_005.jpg.webp?itok=bzIrMs17)   ](https://www.veolia.hk/en/solutions/sludge-treatment/case-study-tpark "T·PARK (Sludge Treatment Facility)") 

 Tuen Mun, Hong Kong 

 [T·PARK (Sludge Treatment Facility)](https://www.veolia.hk/en/solutions/sludge-treatment/case-study-tpark "T·PARK (Sludge Treatment Facility)") 

 Transforming Sludge into Clean Energy in Hong Kong 

 

 

    

 

 

 

 

 

 [Discover](https://www.veolia.hk/en/solutions/sludge-treatment/case-study-tpark) 





 

 



 

 [   ![Opark photo (1)](/sites/g/files/dvc4381/files/styles/content_push_teaser/public/image/2025/12/Opark%20photo%20%281%29.jpg.webp?itok=MsT1gqlH)   ](https://www.veolia.hk/en/solutions/organic-waste-treatment/case-study-opark1 "O.Park1 (Organic Waste Treatment Facility)") 

 Siu Ho Wan, Hong Kong 

 [O.Park1 (Organic Waste Treatment Facility)](https://www.veolia.hk/en/solutions/organic-waste-treatment/case-study-opark1 "O.Park1 (Organic Waste Treatment Facility)") 

 Harnessing Food waste For Renewable Energy in Hong Kong 

 

 

    

 

 

 

 

 

 [Discover](https://www.veolia.hk/en/solutions/organic-waste-treatment/case-study-opark1) 





 

 



 

 [   ![Hong Kong SENT landfill](/sites/g/files/dvc4381/files/styles/content_push_teaser/public/image/2016/12/SENT_151102_020_02_0.jpg.webp?h=c26d9323&itok=mo-TgpMP "Hong Kong SENT Landfill")   ](https://www.veolia.hk/en/solutions/landfill-management/case-study-sentx-went-nent " SENTX, WENT, NENT Landfills") 

 Multiple Location, Hong Kong 

 [ SENTX, WENT, NENT Landfills](https://www.veolia.hk/en/solutions/landfill-management/case-study-sentx-went-nent " SENTX, WENT, NENT Landfills") 

 Capturing Landfill Gas and Converting them into Green Electricity in Hong Kong 

 

 

    

 

 

 

 

 

 [Discover](https://www.veolia.hk/en/solutions/landfill-management/case-study-sentx-went-nent)