Overpass pipes are arranged between the fiber turntable filter structures to facilitate maintenance. It can cross pipes according to the secondary water outlet, saving electricity consumption and medical costs. In order to prevent algae from growing in the lateral flow swash plate sedimentation tank, chlorine dioxide dosing tubes should be set up and dosed regularly. Filtration: Gravity flow of sewage enters the filter, and there is a distribution weir in the filter. The filter disc is completely submerged in sewage. The sewage enters the filter tank and is then filtered through a filter cloth. The filtrate is collected through a hollow tube, and the gravity flow discharges the filter through the outlet weir. The whole process is continuous. During filtration, the filter turntable is in a static state, which is conducive to the deposition of sludge at the bottom of the pool. During cleaning, the filter turntable rotates at a speed of 1 rev/min. The negative pressure suction filter cloth surface of the backwash pump absorbs the sludge particles accumulated on the filter cloth. The water in the filter turntable is sucked from the inside out at the same time, and the filter cloth is cleaned. The instantaneous flushing area accounts for only about 1% of the total filter turntable area. The backwash process is intermittent. During normal cleaning, the two filter turntables are a group. By automatically switching the control of the electric valve on the suction pump pipe, the cleaning of each group is carried out alternately during a complete cleaning process of the fiber turntable filter, and the suction pump works continuously during the period.