The invention discloses a process method for refining sand by recycling
sludge. The method comprises the following steps: glass fragments are grinded and treated, in order to manufacture glass
powder of micron particle size; glass
powder as well as
sludge sand and
sediment which are produced by
dehydration,
desiccation and burning from a
sewage treatment
plant are mixed according to a proportion of 35-80:1-10 in parts by weight,
grinding is carried out, and a primary
powder mixture is obtained; the primary
powder mixture is screened and treated, and the screened primary
powder mixture composed of glass powder as well as
sludge sand and
sediment is added into a mixing and stirring device; 5-20 parts of clam shells and 1-15 parts of
vermiculite powder are added into the mixing and stirring device in the step 4, mixing and stirring are carried out for the clam shells, the
vermiculite powder, the glass powder, and the sludge sand and
sediment, and mixed power is formed; the mixed power is added into a
sintering furnace, and the porous environment-friendly material is manufactured at a high temperature condition of 600-900 DEG C. Recycle of waste glass and regeneration of sludge are organically combined with breakthrough, and the environment-friendly material can be used as building light-weight frame material, construction foundation material,
water quality purifying material, and artificial
floating island.