METHOD FOR MANUFACTURING ABSORBENT USING SLUDGE GENERATED IN TOTAL PHOSPHORUS PROCESSING FACILITY AND ABSORBENT MANUFACTURED BY THE METHOD

摘要

PURPOSE: A method for manufacturing an absorbent using total phosphorus sludge and an absorbent manufactured by the same method are provided to prevent secondary pollution induced by the treatment of sludge and create economic benefit generated by the use of waste by recycling sludge generated in a facility for processing total phosphorus after purification. CONSTITUTION: A method for manufacturing an absorbent comprises the steps of: eluting aluminum and silicon by controlling a pH in the range between 2 and 3 in the process of adding acid including 100 parts by weight of total phosphorus sludge generated in a total phosphorus processing facility, 50 to 100 parts by weight of water, sulfuric acid and hydrochloric acid; mixing 1 to 5 parts by weight of both or either of phosphoric acid and a phosphate compound with 100 parts by weight of the total phosphorus sludge from which aluminum and silicon has been eluted; generating a zeolite reactant by inducing a hydrothermal reaction in the process of evaporating the moisture of the compound; producing a powdery absorbent by dehydrating and drying the reactant; making the powdery absorbent into a granular absorbent; making a dough by mixing and kneading the powdery absorbent with 0.1 to 10 parts by weight of a solidifying agent; and producing a granular absorbent by molding the dough into a granular form. [Reference numerals] (AA) NH_3 concentration (ppm); (BB) Specimen concentration; (CC) Deodorization rate; (DD) Deodorization rate (%); (EE) Elapsed time (min)