The invention discloses a wire-drawing gathering-scattering type combined filler for
sewage treatment, and belongs to the field of combined fillers. The wire-drawing gathering-scattering type combined filler for
sewage treatment comprises a fixed
rope, a semi-elastic movable
rope and a plurality of uniformly distributed rhombic filler bodies, wherein the fixed
rope and the semi-elastic movable rope sequentially penetrate through the rhombic filler bodies and are connected with the rhombic filler bodies, and the rhombic filler body comprises a pair of upper net plates and a pair of lower net plates. According to the invention, the
shape change of the rhombic filler body is controlled, so that the loose state and the dense degree of the
biofilm hanging silk are changed, the integrity of a
biofilm is damaged, the internal pores of the
biofilm are enlarged, the dense degree of the biofilm can be quantitatively and uniformly adjusted according to the actual situation, on the basis of not influencing the normal use of the biofilm, the internal
porosity of the biofilm is improved, the adhesion capacity of the biofilm is reduced, and the separation of the aged biofilm is promoted so as to provide the combined filler which is easy to adjust, promotes demolding and has efficient degradation capacity for
sewage treatment.