The oil skimmer and grease separator AAQUA-FAT can be built in 2 ways:
The AAQUA-FAT is often used:
In the AAQUA-FAT installation oil and fat are being separated.
The scum formed is scraped to an oil-grease compartment.
Heavier particles such as sand, ... won't flote but settle. At the bottom of the AAQUA-FAT there are cones with pneumatically controlled valves foreseen. Those valves are timer controlled so that possible sediment can be removed.