The application ofmultiphase DEM for the prediction of fat, oil and grease (FOG) deposition in sewer pipe lines

Iman AF Husain; Ma’an Fahmi Alkhatib; Mohammed Saedi Jami; Mohamed E.S Mirghan; Zaki Zainudin; Asif Hoda

Authors

Iman AF Husain Bioenvironmental Engineering Research Center (BERC), Kulliyah of Engineering, International Islamic University Malaysia, Kuala Lumpur, Malaysia
Ma’an Fahmi Alkhatib Bioenvironmental Engineering Research Center (BERC), Kulliyah of Engineering, International Islamic University Malaysia, Kuala Lumpur, Malaysia
Mohammed Saedi Jami Bioenvironmental Engineering Research Center (BERC), Kulliyah of Engineering, International Islamic University Malaysia, Kuala Lumpur, Malaysia
Mohamed E.S Mirghan International Institute for Halal Research and Training (INHART), International Islamic University Malaysia, Kuala Lumpur, Malaysia
Zaki Zainudin Bioenvironmental Engineering Research Center (BERC), Kulliyah of Engineering, International Islamic University Malaysia, Kuala Lumpur, Malaysia
Asif Hoda Mechanical Engineering Faculty, Jubail University College, Jubail Industrial City, Kingdom of Saudi Arabia

Keywords:

ANSYS FLUEN , Multiphase, Eulerian model, DPM, Deposition, FOG, sewer pipe

Abstract

Fat oil and grease (FOG) deposition into sewer pipes can block the pipes and restrict the wastewater flow causing backflows and sanitary sewer overflows (SSOs). Understanding the wastewater flow and transport of FOG particles is a key step for predicting the particles deposition and blockage formation. ANSYS FLUENT was used for simulating the flow of FOG particles and its deposition onto the sewer pipe. The multiphase Eularian-Lagrangian model with discrete Phase method (DPM) was utilized for developing the CFD model. The kinetic parameters and physical values are based on previous experimental work and literature. The CFD Eularian-DEM multiphase model has shown a good potential for simulating the wastewater flow and demonstrated the applicability of CFD to simulate and track the transport and deposition of FOG particles into the sewer pipe walls.