固定化活性污泥与淡水藻复合物吸附水体中的Pb^(2+)

Study on the Pb^(2+) in Water Adsorbed by Compound of Fixed Active Sullage and Algae in Fresh Water

研究了固定化活性污泥与淡水中绿藻复合物吸附Pb2+的效率及其主要影响因素间的关系.研究结果表明:复合物比其单一组分固定化物质吸附效果好,在吸附过程中,时间、原水pH值、温度、浓度及复合物的包埋量对吸附效果都有较大影响,当原水中ρ(Pb2+)为500 mg/L、包埋量0.20 g、吸附时间1 h、温度27.5℃、pH=5时时吸附率为97.5%,吸附量为48.75 mg/g;采用HNO3作为解吸剂,其再生能力强.

The Study in lab revealed the relationship between efficiency of the compound of fixed active sullage and green algae in fresh water adsobed Pb^2 ＋ and main influence elements. The effect showed that the compound was better to its simplex component settled figure on adsorption effect, in compound adsorption progress, time and original water＇s pH, temperature, concentration and embeding content of compound were biggish to adsorption effect. Adsorption efficiency was 97.5 % and adsorption capcity was 48.75 mg/g. When Pb^2＋ concentration in original water was 500 mg/L,embeding content was 0.20 g and pH was 5, tempereture was 27.5 ℃ and adsorption time was 1 h, reborn desorptionreagent was HNO3 and its rebirth ability was better.