Study on the removal of toxic substance from river water using O_3-GAC process

摘要

This paper studied on the removal of toxic substance from river water using O_3 -GAC process. The result of GC/MS analysis indicated that the number of organic compound species was decreased by 55. 1%. The species of toxic substance of raw water also decreased from 16 to 5. The total removal rate of COD_(Mn) and UV_(254) were 45%～72% and 60% ～ 80% following O_3-GAC treatment. It reflected that this process had a good effective on removing unsaturation organic which absorb UV and toxic organic containing nitrogen. The results of A-mes test indicated that raw water had a relatively strong mutagicity on TA 98. The O_3-GAC process had a good ability in removing mutagen in water. The effluent water' s mutagicity is minus. The results of the study indicated that the effluent of the O_3 -GAC process was meet the demand of drinking water.