The invention belongs to the technical field of
sewage treatment, and particularly discloses a
rail transit sewage comprehensive treatment and recycling
system which comprises a filtering tank, a tank cover is arranged at the top of the filtering tank, a
sewage pipe is arranged on one side of the top of the tank cover, a water inlet
pipe is connected to one side of the sewage
pipe and located on the top of the tank cover, and a drainage pipe is arranged at the bottom of the filtering tank. A
backwashing structure is arranged between the water inlet pipe and the sewage pipe and located on one side of the filtering tank; one end of the water inlet pipe penetrates through the tank cover, extends to the top of the filtering tank and is fixedly provided with a water
distributor. A mounting block and a stirring rod rotate in opposite directions, so that a walnut shell
filter material in the mounting block can be fully stirred, the walnut shell
filter material can be uniformly overturned under the action of a flow guide block, impurities and oil stains are prevented from being condensed on the surface of the walnut shell
filter material, and the cleaning effect is improved along with
discharge of cleaning water. The phenomena of material leakage and blockage of a circulation loop are not easy to cause, so that the overall filtering speed and filtering effect of the sewage are convenient to improve.