The invention belongs to the technical field of
sewage purification treatment, and discloses an
aquaculture wastewater ecological comprehensive treatment method and
system.The method comprises the following steps that a plurality of hollowed-out composite filler balls prefabricated in a factory are placed in a
sieve type purification filter dam assembling unit of an ecological purification filter dam; particles in
aquaculture wastewater are filtered by filter holes with different diameters formed in a plurality of positions of a
sieve type purification filter dam
assembly unit, and meanwhile, when
wastewater flows in, through iron-carbon micro-
electrolysis coupling and an autotrophic-heterotrophic
denitrification process of a
solid-state
carbon source and microorganisms, the particles in the
aquaculture wastewater are filtered by the composite filler which is uniformly mixed and filled in a hollow composite filler ball according to a proportion. According to the
aquaculture wastewater treatment system and the
aquaculture wastewater treatment method, comprehensive ecological purification treatment including
filtration,
nitrification,
denitrification,
pollutant and harmful substance degradation and
precipitation is performed on the wastewater,
solid particles,
total nitrogen,
total phosphorus and
antibiotics in the
aquaculture wastewater are efficiently removed, up-to-standard
discharge or cyclic utilization is realized, the treatment process and
system are greatly simplified, and meanwhile, the construction and operation and maintenance cost of the whole
system is also reduced.