Abstract: In order to solve the problemof polluted sewage river of heavy metal(Pb and Cd)2organic contamination,planting experiment was conducted to study phytoremediation of Lolium perenne to heavy metal(Pb and Cd)2organic con2taminated sewage river sediment. Results showed the amount of heavy metal2Pb and Cd was larger than soil backgroundvalue of the whole world. The accumulated amounts of Pb were largely existed as a form of integrated state in the totalamount of 296164 mg/kg,in which the highest amount of form of Pb in sewage river sediment was the state of integratedFe2Mn,about 53189 mg/kg,the organic state of the amount,37102 mg/kg,the lowest one was carbonated state of thenumber of 15170 mg/kg,and others were residue state. While the total number of Cd was 5182 mg/kg,and there were noother forms in it. The amount of Pb in the root of Lolium perenne harvested was 254. 69 mg/kg,the same to 2. 9 times ofthe one of the shoot,comparatively;The number of Cd in the root was 2. 39 mg/kg,the same to 1. 9 times of the one ofthe shoot. The plant had different accumulation capacity to different metals,which depended on the amount of differentforms of Pb and Cd.All this proved Lolium perenne L was a kind of fit plant for phytoremediation of Pb,Cd2organic con2taminants.

Key words: Phytoremediation, Lolium perenne L, Lead, Cadmium, Sewage treatment

CLC Number: 

• X173