Provided are a high-efficiency filter device and
wastewater treatment method for
beneficiation wastewater treatment. The filter device comprises a tank body, wherein a material
discharge hopper is formed in the lower part of the tank body, a
wastewater supply device is arranged at the upper part of the material
discharge hopper, and an anti-blocking device is arranged in the middle of the tank body; and the parts, under the anti-blocking device, in the tank body are filled with filter filler composed of
secondary mineral, weak soil, collapsible soil and sandy soil, a floating
water discharge device is arranged under the anti-blocking device, and the tank body is provided with water drainage pipes, waste liquid
discharge pipes and liquid level sensing contacts corresponding to different liquid level positions. When
beneficiation wastewater treatment is conducted through the high-efficiency filter device, wastewater is mixed with the filter filler through a water distribution device under the pressure of inlet water, the obtained mixed liquid is raised to the top from bottom to top through the anti-blocking device, and then
purified water is discharged through the floating
water discharge device; the filtered waste liquid is returned to an adjustment tank, and when the suspended
solid content in the discharged
purified water does not meet the requirements,
filtration stopping andreplacement of the filter filler are conducted; the filter device has even water distribution, and no additional arrangement of a stirring device is needed; and no agglomeration of the filter filleroccurs, the filter filler is not stirred by the
water discharge device, and the filter device has a high speed and a good
filter effect.