Nurturing the Young –

Innovation for Sustainability

Events and Activities

[FULL] Technical Seminar – Commissioning of Harbour Area Treatment Scheme (HATS) Stage 2A

Date, time & venue 
2017-01-25;18:30 - 20:00;Chan Yat Mei Sophie Room, 9/F, HKIE HQ, Causeway Bay


Programme Highlight

The Harbour Area Treatment Scheme (HATS) is the largest environmental infrastructure project in the Hong Kong's history. The construction works spanned two decades at a total cost of $25.8 billion. Adopting advanced engineering techniques to overcome physical constraints, the project involved the construction of sewage tunnels with a total length of over 44 kilometres at a depth of up to 160 metres below sea level. It also involved the upgrade of Stonecutters Island Sewage Treatment Works' annual sewage treatment capacity to 900 million cubic metres within the plant site, enabling it to serve more than five million people. The sewage treatment capacity, scale and coverage of the HATS are the highest among other such projects in Hong Kong.


The HATS aims to improve the water quality of Victoria Harbour by collecting and treating sewage generated from both sides of the harbour. The project has been implemented in two stages. Facilities under Stage 1 were commissioned in December 2001, providing treatment for 75 per cent of the sewage generated from both sides of the harbour. The works of Stage 2A commenced in July 2009 and the facilities were commissioned in December 2015. Through this process, the remaining 25 per cent of sewage from the northern and southwestern parts of Hong Kong Island, which previously received only preliminary treatment, would be redirected to the newly expanded Stonecutters Island Sewage Treatment Works for chemically enhanced primary treatment, meaning that sewage would no longer be discharged to Victoria Harbour. 


With the facilities of the HATS Stage 2A commissioned on 19 December 2015, all sewage from both sides of Victoria Harbour would be conveyed to a sewage treatment plant for disinfection and discharge into the waters west of the harbour. This new milestone for the HATS resulted in the overall enhancement of the harbour's water quality.



Dr. Simon Tsang, Associate Director – Ove Arup & Partners Hong Kong Ltd


Dr Simon Tsang has over 17 years’ experience, specializing in air, water and wastewater process engineering and pollution control. He gained experience on site and in the design office in the East Asian and European countries. Key sectors include municipal water/wastewater/sewage sludge treatment/effluent recycling; various type of industrial wastewater and agricultural effluent treatment; leachate treatment; septicity and odour management; solid waste minimization and treatment; waste to energy; laboratory & pilot scale evaluation of various treatment processes.


Ir Jeremy Mark Sparrow, Chief Resident Engineer – Ove Arup & Partners Hong Kong Ltd


Ir Sparrow is a Chief Resident Engineer and Engineer’s Representative for the Ove Arup & Partners HK Ltd. on the SCISTW/PTW Contracts of the HATS Stage 2A Project.  He is a Chartered Engineer with thirty-one years of experience in managing heavy civil engineering, building and infrastructure works, which include involvement in the Las Vegas Sands developments in Macao and Singapore, the Chek Lap Kok Airport and related project works in Hong Kong, and the Channel Tunnel Project in the UK.  With 25 years in Hong Kong, he has local experience at all stages of project implementation, with his technical skill complimented by a comprehensive knowledge of construction methodologies and programme management. He has a keen interest in dispute, mediation, adjudication and arbitration, and has provided evidence during such proceedings.


Ir KY Chan, Chief Resident Engineer – AECOM Asia Co. Ltd


Ir Chan Kai Yuen has over 35 years’ experience in design and site supervision of multi-disciplinary infrastructure projects.  He has been working on site as a resident site staff since 1988, and has been involved in the construction of the New Territory Circular Road, Smithfield Extension, Tin Shui Wai Development, Shatin Height Tunnel, Lam Tsuen River Improvements and HATS. He is now the Chief Resident Engineer of the Tseung Kwan O – Lam Tin Tunnel Project.


Ir Jim KW Mo, Engineer – Harbour Area Treatment Scheme Division, Drainage Services Department


Jim has over 20 years’ experience in planning and implementation of multi-disciplinary infrastructure projects in the Works Departments of Hong Kong SAR Government. He joined the HATS project in 2011 and was involved in the construction of sewage tunnels, upgrading of Stonecutters Island Sewage Treatment Works, and building of the sewage vessels.



Free of charge


Registration & Enquiries

The number of participants is limited to 80 and priority will be given to members of Civil Division. Please complete the on-line registration at Email registration will not be accepted. Only successful applicants will be informed by email. For enquiries, please contact Ir Alex Li at


CPD Certificate

CPD certificate will be issued to those who attend the seminar.


Remarks: (The talk will be conducted in English)

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