Design and analysis of hydrophobic oil skimmer for grease trap system

Attaman, Muhamad Amirul Afif (2019) Design and analysis of hydrophobic oil skimmer for grease trap system. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Nowadays, the problem that may be concern by public is fat, oil and grease (FOG) issues. The number of FOGs continues to increase every year as the number of restaurants increases. When certain waste is disposed of directly into the drainage system, the FOG may build up around the plumbing system of the wastewater system facility. Efficient development of the grease trap will reduce the impact of the problem and prevent the FOG contaminant in the sewage system. The objective of this project is to design and fabricate the concept of oil skimmer for grease trap. Oil skimmer is equipment that remove or separate oil from water on the fluid surface. Other that, the evaluation of the skimmers depends on the best material and structure so that retention time can be reduced. To ensure that the aim of the project is achieved, the grease trap skimmer was designed based on engineering design methods such as house of quality (HOQ), Pugh method and morphological chart. Thus, a study was conducted to explore the influence of roughness on the selected materials. They were roughened by using 150 grid abrasive paper. Contact angle and surface roughness characterization were evaluated by self-fabricate contact angle measurement tools and Profilometer Surftest SJ-410. It was found that roughness strongly influenced the wettability of the selected materials due to air trap and its geometrical structured. The results reveal that acrylic skimmer are most efficient between aluminium, paraffin and polystyrene.

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