摘要:
通过静态吸附实验,研究了黄河底泥对水体中总铁的吸附,并研究了无机高分子絮凝剂(铁铝共聚物)对吸附产生的影响.结果表明,在黄河底泥对总铁的吸附过程中,pH值和底泥的浓度均会对吸附量产生很大影响.在其特征pH值吸附范围内,随着pH值的升高,吸附量相应增加.同时,在特定的pH值和底泥浓度下,随着总铁初始浓度的增加,吸附量也相应增加;而在总铁初始浓度不变的情况下,随着底泥浓度的增加,水体中平衡吸附量减少.结果还表明,絮凝剂的加入,可使黄河底泥对总铁的吸附量明显增加,从而提高水体中总铁的去除率.
Abstract:
The adsorption behavior and mechanism of Fe onto the sediments in Yellow river,and the effect of addition of flocculating agent on the adsorption and sedimentation,were studied in this work,using static adsorption method.The experimental results show that the adsorption of total Fe in the sediments sampled in Yellow river seems to be a function of pH values,contents of sediments used,and the addition of flocculating agents,as evidenced by the facts that the adsorption of Fe on the sediments and removal of Fe from solution increases with the increase of pH and addition of flocculating agent,but decreases with the increase of sediment contents.
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