针对污水处理中产生的大量剩余污泥的絮凝脱水问题,研究制备了壳聚糖/蒙脱土(CTS/MMT)复合絮凝剂,并利用CTS聚电解质的电中和与架桥作用,以及MMT的吸附作用来提高污泥的脱水性能.结果表明,复合材料两相间存在氢键作用,通过形成物理交联网络使其弹性储能模量增加,损耗因子减小;复合材料中CTS分子链插层进入MMT层间,且采取单分子层的方式排列;CTS/MMT质量比为1∶1.5、质量浓度为0.1 g/L时有利于降低污泥的比阻和含水率,提高污泥上清液的透光率,降低浊度,增强复合材料的污泥脱水性能.
参考文献
| [1] | V.N. Kouloumbos;A. Schaeffer;P.F.-X. Corvini .Impact of sewage sludge conditioning and dewatering on the fate of nonylphenol in sludge-amended soils[J].Water research: A journal of the international water association,2008(14):3941-3951. |
| [2] | 曾德芳,袁继祖.PQ-AR污泥脱水絮凝剂的研制及其性能研究[J].中国给水排水,2006(19):75-77,81. |
| [3] | Darder M.;Colilla M.;Ruiz-Hitzky E. .Biopolymer-clay nanocomposites based on chitosan intercalated in montmorillonite[J].Chemistry of Materials,2003(20):3774-3780. |
| [4] | Zhiqiang Zhang;Siqing Xia;Jiao Zhang .Enhanced dewatering of waste sludge with microbial flocculant TJ-F1 as a novel conditioner[J].Water research: A journal of the international water association,2010(10):p.3087. |
| [5] | Shipeng Zhu;Jinyao Chen;Huilin Li;Ya Cao .Structure and conformation of poly(ethylene glycol) in confined space of montmorillonite[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2013(Jan.1):500-506. |
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