日本人造沸石治理农田重金属污染试验初报

研究日本人造沸石在实验室及大田环境条件下对污染水、土中重金属的吸附性、结果表明、实验室条件 下日本人造沸石对水中镉离子的吸附效果明显、吸附率达97%以上、对土壤中Pb、Cr、Cu、Cd 重金属的吸附效果与土 壤pH 值没有相关性、与污染土壤中人造沸石的投入量成正相关；大田环境下日本人造沸石对污染土壤的Pb、Cu、Cr 重金属吸附效果明显、吸附量与人造沸石的投入量成正相关、当人造沸石每667 m2施用量达到500 kg、施后30 d对 污染土壤中Pb、Cu、Cr净化率分别为>95.4%、85.3%和>57.4%。

Preliminary study on the treatment of Japanese permutite on farmlands polluted by heavy metals

This study investigated the absorbability of Japanese permutite on water and soil polluted by heavy metals under experimental and field conditions. The results showed that, the absorbing effect of Japanese permutite on cadmium ion in water was very significant and the absorption rate was above 97% under experimental condition. Moreover, in the same case, absorbing effects of Japanese permutite on heavy metals (Pb, Cr, Cu, Cd) in soil showed no relationship with pH value, but were positively related to the input of Japanese permutite. On the other hand, under field conditions, the absorbing effects of Japanese permutite on heavy metals (Pb, Cu, Cr) in soil were also very good and the absorbance was positively related to the input of permutite. When the amount of permutite was 500 kg/667m2, the purification rates of the Japanese permutite on Pb, Cu and Cr in soil were above 95.4%, 85.3% and 57.4%, respectively.