3. Pre-treatment
3.1 Degreaser tank
In collective sanitation, grease traps are used to remove wastewater from restaurants before it enters the sewer system.
Grease effluents can damage sewage systems and interfere with water treatment if they are discharged directly into the public sewer system. They have two functions:
settling;
separation of fats by natural flotation (Figure4).
...
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Pre-treatment
Lifting station
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