Wastewater and grease: We are being separated!

Concrete grease separator with many advantages

(Photos/Fotos: Mall)

Fig. 1 Function scheme of a grease separation plant. Sampling pit and lifting plant are here integrated into one component.

(Photos/Fotos: Mall)

(Photo: Mall)

Fig. 2 Robust separation plant made of reinforced concrete facilitate installation in the ground – even under more difficult conditions, as is the case here when replacing an old plant installed under the parking lot of a supermarket.

(Photo: Mall)

Fig. 3 The grease separators installed at McDonald’s are provided with a fatty acid resistant PE-HD lining to increase their service life.

(Photo: Mall)

All grease separators are based on the same separation principles and are of similar design. Important criteria for comparing the different systems on offer are, aside from the costs, their stability and functionality in day-to-day practice. Particularly separators made of reinforced concrete that are installed in the ground get high marks.

All establishments where fatty water occurs are required to use a grease separator. Among these are, for example, cafeterias, restaurants, hotels, rest stops, butchers and senior citizen residences as well as companies of the food processing industry.

Grease separators function on the basis of the gravity system. They consist of a sludge trap, a fat collector a sampling device and, frequently, a lifting plant. The nominal size of a grease separator plant depends on the amount of the sewage water involved and is measured in liters per second. The plants can be installed space-saving below...