The 12MLD Pasay New Water Modular Treatment Plant project involves the development of a state-of-the-art facility designed to produce 12 million liters of treated water per day. This modular plant, located in Pasay, Philippines, utilizes advanced water treatment technologies to ensure a reliable supply of safe and potable water for the region. The modular design allows for quick assembly, scalability, and adaptability to meet growing demand, ensuring efficient and effective water treatment solutions for the community.

The project consists of three tanks namely, Chlorine Tank 1,2 and Produced Water Tank for which   CFD analysis was carried out to study the flow velocity & mixing profiles.

Mechartes carried out steady-state multiphase flow analysis to verify the flow velocity and the mixing performance. The parameters of velocity, NaOCL, and Ammonium sulfate concentration were studied. Upon completion of the study, recommendations were provided to have a uniform velocity profile and mixing.

Furthermore, Multiphase flow modeling of water & air was studied to check whether the suction of air into the pump intake at low water level conditions is happening or not in the chlorine contact tank-1 & product water storage tank. The formation of submerged vortices, surface vortices, and swirl flow movement around the pump intake due to low water level conditions were studied to verify its impact on the pump intake.

The flow analysis also verified the flow velocity profiles and volume fraction of air at pump intake for the given tank geometry. Appropriate recommendations were also provided to avoid the movement of air into and formation of vortices around the pump intake.