In the Sequencing Batch Reactor (SBR) Activated Sludge Process, the SBR decanter is a vital equipment. This is also the most widely used decanter especially for Industrial purposes. This type of water decanter can work steadily, without leakage, easy to control, flow smoothly without disturbing the sludge. The unique advantage of the SBR process is that we do not need any secondary sedimentation and sludge return equipment as the SBR process itself uses a batch reactor. As a result, it can save a lot of investment in infrastructure and with good handling effect, which has been immensely promoted in out country. Its fundamental operation composed of water fill, settle draw, react, and idle five primary process. It's an absolute cycle from waste water fill to its idle. The Macsun decanter attains the purpose to drain the treated water considerably and continuously, which makes it feasible to incessantly treat the water in SBR pool.