The application provides a method and device for treating
wastewater by combining a suspended filler floating
bed and a
soil infiltration system, and the method comprises the following steps: S1, breeding
wastewater is treated by the suspended filler floating
bed after passing through a
hydrolysis tank, and
effluent is treated in a
sedimentation tank, and
wastewater of the suspended filler floating
bed is returned to the suspended filler floating bed for
secondary treatment; S2, wastewater of the
sedimentation tank is returned to the
hydrolysis tank; and S3,
effluent of the
sedimentation tank is introduced into a soil underground infiltration
system. The
system provided by the application is beneficial to further strengthening the effects of
denitrification,
phosphorus removal and removal of
suspended solids, and solves the problems of
low dissolved oxygen content of influent and wastewater in the system, which is not conducive to the growth of
nitrifying bacteria, and low
effective volume utilization rate. In the use process, the filler does not need to be replaced, and mechanical
aeration equipment does not need to be added, and the system has the advantages of low
investment cost, no need to add
chemical agents for treatment, obvious effect, not easy to
breed mosquitoes, simple operation and management, and
beautification of the environment, and has remarkable ecological and
economic benefits for promoting deep purification of breeding wastewater.