Suspended filtering system

The invention relates to a suspended filtering system. The suspended filtering system comprises a filtering pool body, wherein the filtering pool body is divided into three areas by an upper filtering plate and a top plate of a water distribution channel from top to bottom; the area above the upper filtering plate is a clean water storage area; the area under the top plate of the water distribution channel is provided with a raw water distribution channel communicated with raw water; the area between the upper filtering plate and the top plate of the water distribution channel is a filtering area; a suspended particle filtering material with preset thickness is contained in the filtering area; filtering head installing holes are distributed in the upper filtering plate and are internally provided with filtering heads; water distribution holes are distributed in the top plate of the water distribution channel. Compared with a traditional forward-flow filtering process, a backward-flow filtering process of the filtering system has the advantages that the water head loss is as less as about 0.6m and is only 1/4 of that of conventional filtering; in addition, during back washing, a water head after upper filtering can be utilized, the back washing is realized by means of the gravity action of a water body, and energy consumption is not needed in the back-washing process, so that huge facility investments and operating costs are saved.