A Study of the Removal of Pesticides from Water.

摘要

The purpose was to investigate some of the properties of pesticides as they exist in water,and to determine the effectiveness of several water treatment processes in the removal of pesticides from water. Among the pesticides investigated were malathion,DDT,aldrin,water treatment processes include aeration,chemical coagulation,adsorption on activated carbons and clays,and foam separation. The removal of pesticides from water by aeration was significant. Dieldrin was removed almost 100%,while aldrin,DDT,and BHC were removed to a lesser extent. There was no loss of 2,4,5-T and captan through aeration. Chemical coagulation alone was ineffective in the removal of pesticides from water. Of the processes investigated adsorption with activated carbon was the most effective in removing pesticides from water. The removals obtained were--malathion near 100%; 2,4-D, 90%;DDT, 95%;aldrin, 100%;dieldrin 90%.