A grease trap pre-treats food waste before it enters the treatment system (either our sewer line or a private septic tank).
Commercial food premises and food preparation industries must have appropriate grease traps installed. With large businesses, more than one grease trap may be required.
Maintenance
Regardless of the size or design, all traps must be maintained on a regular basis appropriate to the level of use to ensure that they are working properly.
You can improve the efficiency of a trap by minimising the amount of solids entering it.
A cleaning frequency of one to three months is often acceptable. The trap size (volume) and the load placed on the trap all vary from business to business, resulting in different cleaning intervals for each trap.
We no longer permits servicing of these to be done by the business itself. This maintenance must be carried out by a contractor certified under the WasteMINZ Liquid & Hazardous Wastes Code of Practice.
You can find out about trap design, maintenance and information about the right trap for your business in our brochure for the food preparation and processing industry.
Trade Waste Information for the Food Preparation / Processing Industry(PDF, 475KB)