Engineering in Practice

Events and Activities

Webinar on Sha Tau Kok Sewage Treatment Works Expansion – Submarine Outfall Installation by Horizontal Directional Drilling Method

Date, Time and Venue

25 May 2022 (Wednesday), 18:30 – 20:00, Seminar Via Zoom Meeting


Organized by

HKIE Civil Division


Programme Highlights

The existing Sha Tau Kok Sewage Treatment Works (STKSTW) provided a secondary level treatment to sewage collected from Sha Tau Kok town area, and commissioned in 1989 with a design capacity of 1,660m3/day at average dry weather flow (ADWF).  To cope with a forecast increase in development needs in Sha Tau Kok area, STKSTW is undergoing expansion to increase the treatment capacity from 1,660m3/day to 5,000m3/day with provisions for further increase to 10,000m3/day in future.

The treated effluent would be discharged via a new 1.8km submarine outfall from the new STKSTW after commissioning.  The outfall is constructed by horizontal directional drilling (HDD) method to minimize dredging and other construction activities in water.  The discharge location is selected to minimize impacts to the fishing resources, fish culture activities and other ecological resources in the marine environment.

The submarine outfall is located at approximate 100m below the seabed, and constructed by 2-way forward drilling operations at both land and sea sides.  The construction was commenced in Q3 2020 and completed in Q1 2022.  The Project Team will also present the planning works before construction, sequences of works, and challenges/difficulties encountered during the construction.

   *Please complete the on-line registration at


Mr. Alex LAM, Engineer/Consultants Management, Drainage Services Department, HKSAR – Mr. LAM has over 10 years of experience in planning, design and construction of drainage and sewerage projects.  Mr. LAM joined the HKSAR Government in 2018, he is currently looking after the Expansion of Sha Tau Kok Sewage Treatment Works Phase 1 Project.


Mr. Kevin CHAN, Resident Engineer (Civil), Binnies Hong Kong Limited – Mr. CHAN is a member of the Hong Kong Institution of Engineers (Civil Division).  He has over 11 years of experience in construction supervision of civil engineering projects including the construction of submarine gas pipelines and MTR West Kowloon Terminus.


Mr. Ron HUNG, Site Agent, Build King – Kum Shing Joint Venture.  Mr. HUNG is leading the contractor’s team under this Project.  He is a member of ICE Hong Kong.  He has over 16 years of experience in the civil engineering industry, including Liantang/Heung Yuen Wai Boundary Control Point Site Formation and Infrastructure Works and the construction of Yung Shue Wan and Sok Kwu Wan Sewage Treatment Works at Lamma Island.






Free of Charge


Registration & Enquiries

The number of participants is limited to 500 on a first-come-first served basis. Priority will be given to members of the Civil Division.

Email registration will not be accepted. Successful applicants will be informed by email and provided a link to the Zoom Webinar at the designated time slot. Participants need to sign in using the membership no. and name entered at the time of registration. A CPD certificate will be issued 3 weeks after the seminar based on this membership no. and name.

For enquiries, please contact Mr. Vincent Tam via email: