COMPOSITION FOR ADSORBING PHOSPHORUS AND/OR NITROGEN FROM EFFLUENTS OR LIQUID WASTE, PROCESSES, PRODUCTS AND USES

摘要

The present invention relates to a composition for adsorbing phosphorus and/or nitrogen from effluents or liquid waste, comprising at least one supporting material, preferably serpentinite, vermiculite, plant charcoals (optionally modified by oxidative treatment) and/or sludge from phosphate-rich effluent treatment plants, said supporting material being impregnated with calcium, zinc, copper, manganese, molybdenum, boron, cobalt and/or nickel, and calcinated. The present invention also relates to use of the composition, the process for preparing the composition, the process for producing additives for conditioning soil and releasing nutrients, devices for recovering phosphorus and/or nitrogen and the additives produced.