摘要
为了减少疏浚底泥的二次污染及对其进行资源化利用,将底泥制备成多孔吸附材料。试验中得出,底泥多孔吸附材料合成滤料在镉吸附容量上的较优工艺组合是水固比0.6,成孔剂类型为X-100,水泥和底泥比为5∶5,在不同金属离子浓度环境下均能保持较好的处理效果。通过在不同实验条件下对底泥多孔吸附材料吸镉的解吸量研究,低p H值对镉的解吸量影响较大,随温度上升解吸量呈上升趋势,总体影响不大,Cl离子和Zn离子对解吸量的影响也很小。
In order to reduce the second- pollution of dredged sediments,the sediments were reused by producing it into porous materials. The results were as follows: the optimal combination of technical conditions on adsorption property was determined as: water- solid ratio 0. 6,the foaming agent X- 100,cement- sediment and sediment ratio 5∶5,and better treatment effect can be maintained under different metal ion concentration. Under different experimental conditions,it was found that the low p H had a great influence on the Cd- desorption,and with the increase of temperature,the amount of the Cd- desorption was on the rise,but the overall effect was not big. Cl and Zn ions also had little impacts on the amount of the Cd- desorption.
引文
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