The ecological filter dam comprises a purification
system, an
aquatic plant system and a river channel, the lower end of the river channel is a river bottom, the purification
system comprises a filtering interception area and a deep purification area, and the filtering interception area comprises a plurality of
gabion cages arranged in the
water flow direction of the river channel; the lower ends of the
gabion cages are provided with expansion bolts and are fixed through the expansion bolts, gravels and
zeolite are filled between the
gabion cages, and a plurality of fixing anchor rods are arranged at the left end and the right end of the filtering and intercepting area respectively, and a double-dam-body structure of the filtering and intercepting area and the deep purification area is adopted, so that the
pollutant reduction effect can be improved, and a
water body is fully purified; by means of interval piling and arrangement of filter materials in the filter interception area, blockage caused by the fact that large-particle floating objects or
suspended solids enter the ecological filter dam can be effectively reduced, further, the
zeolite filler layer is filled with fine holes and channels, the
porosity is high, the specific surface area is large, and according to the porous characteristic of
zeolite, the zeolite has good adsorbability, so that the ecological filter dam is more environment-friendly. The content of suspended matters and
phosphorus in
river water can be effectively reduced.