| 摘要 |
An improvement is provided in grease trap assemblies for grease traps to be positioned on the roof of commercial buildings such as restaurants. The improvement comprises a system for degreasing that uses, in combination, a grease absorbent material that is porous rock, preferably lava, and a grease digestible microbe capable of digesting fatty acids from cooking fats and oils. Each can as well be used alone, but best results are achieved with the combination.
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