METHOD FOR PURIFICATION PROCESSING WASTE-WATER CONTAMINATED WITH HEAVY METALS USING NATURAL BIOSORBENTS SUCH AS PERSIMMON SKIN

摘要

PURPOSE: A method for purifying waste water contaminated with heavy metals using a natural absorbent is provided to reduce driving costs of a wastewater processing facility with inexpensive adsorbent costs, and to environmentally friendly process the wastewater. CONSTITUTION: A method for purifying wastewater(5) contaminated with heavy metals includes the following steps: drying persimmon skin; powdering the dried persimmon skin to 30~70 mesh; putting the persimmon skin powder to the wastewater contaminated with the heavy metals; adsorbing the powder by agitating the powder in the wastewater for 3 hours ~72 hours; separating the wastewater into sludge and water; and discharging the purified water to the outside.