City shifts from landfilling food waste toward biogas generation and composting as part of its circular-economy strategy
Hong Kong is stepping up its efforts to divert food waste from landfills by converting it into biogas and compost at two dedicated facilities.
In 2022, roughly three thousand three hundred tonnes of food waste were still being buried daily in landfills—accounting for around thirty per cent of municipal solid waste—which put pressure on the city’s limited landfill capacity.
The Organic Resources Recovery Centre Phase 1 (O·PARK1), located in Siu Ho Wan on Lantau Island, opened in July 2018 and has a design capacity of two hundred tonnes per day.
It processes source-separated food waste through anaerobic digestion to generate biogas, which is used to power the facility and export about fourteen million kilowatt-hours per year—enough to supply about three thousand households.
The residual digestate is converted into compost for landscaping and agriculture.
A second facility, O·PARK2, in Sha Ling, North District, is designed to treat up to three hundred tonnes per day and is expected to bring total food-waste-recycling capacity to six hundred tonnes per day when fully operational.
O·PARK2 also incorporates low-carbon construction methods and is forecast to reduce approximately sixty-seven thousand tonnes of greenhouse-gas emissions annually through its operation.
The government’s Food Waste Management Strategy emphasises three pillars: reduction at source, food donation and recycling at facilities.
Smart food-waste-bin programmes in public rental housing estates and private buildings are being expanded; the Environmental Protection Department reports that by March 2024 the average daily food-waste collection stood at around two hundred and thirty tonnes, and the number of collection points has grown significantly.
While recycling rates remain modest—recovering around sixty thousand tonnes in 2023 from a potential daily generation of much larger volumes—officials view the infrastructure upgrades as critical to the city’s shift toward a circular economy.
By combining throughput expansion with behavioural-change campaigns and regulatory incentives, Hong Kong aims to ease landfill burdens, reduce methane emissions and capture value from food waste streams.
In 2022, roughly three thousand three hundred tonnes of food waste were still being buried daily in landfills—accounting for around thirty per cent of municipal solid waste—which put pressure on the city’s limited landfill capacity.
The Organic Resources Recovery Centre Phase 1 (O·PARK1), located in Siu Ho Wan on Lantau Island, opened in July 2018 and has a design capacity of two hundred tonnes per day.
It processes source-separated food waste through anaerobic digestion to generate biogas, which is used to power the facility and export about fourteen million kilowatt-hours per year—enough to supply about three thousand households.
The residual digestate is converted into compost for landscaping and agriculture.
A second facility, O·PARK2, in Sha Ling, North District, is designed to treat up to three hundred tonnes per day and is expected to bring total food-waste-recycling capacity to six hundred tonnes per day when fully operational.
O·PARK2 also incorporates low-carbon construction methods and is forecast to reduce approximately sixty-seven thousand tonnes of greenhouse-gas emissions annually through its operation.
The government’s Food Waste Management Strategy emphasises three pillars: reduction at source, food donation and recycling at facilities.
Smart food-waste-bin programmes in public rental housing estates and private buildings are being expanded; the Environmental Protection Department reports that by March 2024 the average daily food-waste collection stood at around two hundred and thirty tonnes, and the number of collection points has grown significantly.
While recycling rates remain modest—recovering around sixty thousand tonnes in 2023 from a potential daily generation of much larger volumes—officials view the infrastructure upgrades as critical to the city’s shift toward a circular economy.
By combining throughput expansion with behavioural-change campaigns and regulatory incentives, Hong Kong aims to ease landfill burdens, reduce methane emissions and capture value from food waste streams.







































