Grease Trap Waste Disposal Control

Oil and grease in wastewater arising from normal operations of restaurants and food processing factories will need to be separated out, commonly by means of grease traps, before the wastewater is discharged from the premises. The oil and grease intercepted by grease traps, usually known as grease trap waste, needs to be removed regularly in order to ensure the proper functioning of the grease traps. For details of the maintenance of grease trap, please refer to the booklet "Grease Traps for Restaurants and Food Processors".

For small grease traps (eg. those installed under individual sinks), the grease trap waste could be removed manually by scooping it into watertight plastic bags and disposed of together with other kitchen refuse. For large grease traps, the restaurants and food processing factories should employ collectors registered with EPD to collect their grease trap waste for proper disposal.

At present, registered collectors deliver the collected grease trap waste to the Interim Grease Trap Waste Treatment Facility (Treatment Facility) at the West New Territories Landfill in Tuen Mun for proper disposal. This interim treatment facility will soon be replaced by a permanent Grease Trap Waste Treatment Facility (GTWTF) housed within the West Kowloon Transfer Station, Kowloon. The GTWTF is undergoing testing and commissioning now and is expected to commence trial operation in November 2007. When the GTWTF is put into operation in 2008, 12 to 15 tonnes of Lipofit, the recovered oil and grease from the grease trap waste, will be generated per day for reuse as an alternative industrial fuel.

The GTWTF contractor is now inviting Expression of Interest to seek market interest and feedback on the use of Lipofit.