Rapid Sand Filter

Credits for Back washing video Channel: Wadcharid T. https://www.youtube.com/user/fcaonz/featured Link for video: https://youtu.be/vteFTaz-lY4 The rapid sand filter group includes pressure filter and rapid sand gravity filter, here we are discussing the latter part. This video lecture is a powerpoint presentation on rapid sand gravity filter. This video describes the rapid sand filter working process in form of animation. The video also encompasses the design steps for rapid sand filter. Along with this we have covered the backwashing of rapid sand filter in form of animation. The diagram and construction of rapid sand filter is discussed along with the coefficient of uniformity and coefficient of curvature of various materials. The design considerations of under drainage system and design of water troughs is also discussed. Under drainage consists of laterals and central manifold.