Integrated water treatment filtering device

The invention discloses an integrated water treatment filtering device which comprises n equivalent filtering columns, the upper integrated cover is connected with the upper end faces of the filter columns and comprises a water inlet, a drainage channel and n water distributors, the n water distributors are arranged above the filter materials of the n filter columns in a one-to-one correspondence mode, and the drainage channel distributes inlet water of the water inlet into the water distributors; the lower integrated cover is connected with the lower end faces of the filter columns and comprises n water collectors, a water collecting channel and a water outlet, the n water collectors are arranged below the filter materials of the n filter columns in a one-to-one correspondence mode, and the water collecting channel collects water collected by the water collectors and outputs the water through the water outlet. According to the invention, a traditional large tank is designed into a set of a plurality of equiv