Siu Ho Wan Sewage Treatment Works

Summary

The Hong Kong Drainage Services Department (DSD) aims to provide world-class wastewater and stormwater drainage services to support sustainable development. The Hho1 Sewage Treatment Works, in operation since 1998, processes around 60,000 cubic meters of sewage daily, serving major areas like Hong Kong International Airport and Discovery Bay. The facility incorporates chemical treatment, UV disinfection, and a 1.15 km submarine outfall for effluent discharge. DSD also leads in solar energy adoption, with a large solar farm powering a significant portion of the plant’s needs, supporting their commitment to renewable energy and sustainability.

Takeaways

• 😀 DSD's vision is to provide world-class wastewater and stormwater drainage services for sustainable development in Hong Kong.
• 😀 DSD currently manages approximately 70 sewage treatment facilities, serving over 93% of Hong Kong's population.
• 😀 The H ho1 sewage treatment works in North Lantau was commissioned in 1998 and has a design flow of 180,000 cubic meters, enough to fill 72 Olympic-sized swimming pools.
• 😀 The plant currently processes around 60,000 cubic meters of sewage daily, serving a population of 200,000, including areas like Hong Kong International Airport and Discovery Bay.
• 😀 Sewage at the H ho1 treatment works goes through multiple stages: screening, grit removal, chemical enhancement, and sedimentation before final disinfection.
• 😀 After primary treatment, the sewage is disinfected using UV light before being discharged into the sea via a 1.15 km submarine outfall.
• 😀 To combat climate change, DSD has implemented solar power initiatives at the Su hoan sewage treatment works, with nearly 5,000 solar panels installed across three major areas.
• 😀 The solar farm at the Su hoan plant has a combined generation capacity of around 1,200 KW, covering 1/5 of the plant's annual electricity consumption.
• 😀 The solar panels generate enough electricity to meet the annual needs of 360 three-member households.
• 😀 Looking ahead, DSD plans to adopt more renewable energy technologies to further promote sustainable development.

Q & A

What is the vision of the Drainage Services Department (DSD)?

The vision of the DSD is to provide world-class wastewater and stormwater drainage services, enabling sustainable development in Hong Kong.

How many sewage treatment facilities does the DSD currently manage?

The DSD currently manages around 70 sewage treatment facilities in Hong Kong.

What is the design flow of the H ho1 sewage treatment works?

The design flow of the H ho1 sewage treatment works is 180,000 cubic meters, which is enough to fill up 72 Olympic-sized swimming pools.

How much sewage does the H ho1 sewage treatment works process daily?

The H ho1 sewage treatment works processes around 60,000 cubic meters of sewage daily.

Which areas are served by the H ho1 sewage treatment works?

The H ho1 sewage treatment works serves a population of 200,000 in areas including the Hong Kong International Airport, Tong Chong, Discovery Bay, and the theme park.

What is the purpose of the chemical process applied at the sewage treatment works?

The chemical process, involving the addition of beric chloride and polymer, helps in chemically enhancing primary treatment to remove solids and pollutants from the sewage.

How is the treated sewage disinfected before being discharged?

The treated sewage is disinfected using UV light before being discharged into the sea through a 1.15 km submarine outfall.

What renewable energy initiative has the DSD implemented at the Su hoan sewage treatment works?

The DSD has implemented a large solar power initiative at the Su hoan sewage treatment works, with nearly 5,000 solar panels installed across three major areas and other plant facilities.

How much of the plant's annual electricity consumption is met by solar power?

The solar panels generate enough electricity to meet 1/5 of the plant's annual electricity consumption, which is equivalent to the annual electricity needs of 360 three-member households.

What is the DSD's plan for the future regarding renewable energy?

Looking ahead, the DSD plans to continue adopting more renewable energy technologies to achieve sustainable development.