The Development Of An Active Grease Trap For Domestic Application

Juffrizal, Karjanto (2014) The Development Of An Active Grease Trap For Domestic Application. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This research focuses on development of filtration of solid waste and fat, oil and grease (FOG) that mixed in the wastewater coming from the domestic usage, especially the residential kitchen sink, and for food industries. Fat, Oil and Grease (FOG) are the three elements usually found in the municipal sewage systems as the results of improper disposal from the sink, coming from domestic and commercial kitchen. The absent or inefficient of a plumbing device known as grease trap has caused this damage. Grease trap is a structure with special mechanism to trap the FOG in the wastewater. Usually, it is placed under the sink for domestic application while for industrial usage, most of the time it is buried underground to accommodate bigger structure of the grease trap. There are two types of grease trap, one is active grease trap (AGT) and the other is passive grease trap (PGT). The application of PGT is simple and cheap in cost but alas the PGT has a limitation in terms of the maximum capacity and the operational reliability since most often than not, PGT is operating based on the gravitational law. On the other hand, AGT usually has a complex design equipped with temperature-controlled device, hydrostatic pressure or automated tool to enhance the processing rate. In addition, there are two parameters that govern the construction of grease trap which are the retention time and flow rate and also the ratio of sizing including the empirical formulations regarding the flow rate and the retention time will be studied and discussed thoroughly in this research. Furthermore, the understanding of the nature of the FOG, the best structure for the grease trap, the construction and experiments on the prototype, the related calculations, and the design restrictions were covered in this research. Hence, a conceptual AGT design will be developed and later a working prototype will be developed to validate the conceptual design. In addition, the research will also focus on the correlation studies of the parameters that govern the retention time of oil in wastewater and also the grease trap sizing ratios (empirical formulation).

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