AbstractWith increasing frequency and intensity of disasters reported around the world, no doubt the developing countries would suffer considerable damages such as environmental, infrastructure, economy, population displacement, etc., compared to the developed countries. It is well known that in the events of emergency situations, e.g., natural disasters, one of the most basic requirements for human survival is the supply of clean and safe drinking water. However, it is impossible to supply when the facilities and infrastructures required are not functioning effectively. Hence, there is an urgency to develop a decentralized water treatment system to answer such problems in the aftermath of disasters, which undoubtedly require immediate response while waiting for aid to arrive. Membrane technology has emerged as one of the highly potential separation techniques as the quality of the product is better than conventional methods, easier to maintain and operate and most importantly cost effective. However, membrane tends to foul and this causes drastic reduction in the production of clean water. The introduction of Dean vortices in a circular crossflow system minimizes the effect of concentration polarization thus improves the overall performance of membrane filtration, hence based from these findings, a prototype was developed.