Hydraulic cyclone is highly useful in separating the heavy coarse particle sediments and other substances found in the sewer. It can also be used for sludge dewatering. The device comes in two categories (1)pressure-style and (2) gravity-style. They are often made with either circular cylindrical structures or metal tube. The water comes either through pressure style or gravity style. With the help of centrifugal force, the heavy particulate matter is thrown to the wall, rotated and then discharges with concentrated liquid. For smaller particulate matter, the secondary vortex flow is used. The device is a hydro cyclone cylinder having an upper part with a hollow cylinder and a low portion having a vertebral body. Additionally, they have the feeding pipe, overflow pipe, overflow conduit and grit mouth. Hydraulic cyclone is mainly used in the mineral processing industry.