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首页> 外文期刊>Separation and Purification Technology >A study on the properties and coagulation behaviour of modified inorganic polymeric coagulant—Polyferric silicate sulphate (PFSiS)
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A study on the properties and coagulation behaviour of modified inorganic polymeric coagulant—Polyferric silicate sulphate (PFSiS)

机译：改性无机高分子凝聚剂-聚硅酸硫酸铁（PFSiS）的性能和凝聚行为研究

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摘要

Coagulation/flocculation process is regarded as an important environmental protection technology, finding wide application in water/wastewater treatment facilities. The continuous need for more efficient coagulation process has lead to the development of new modified coagulation reagents, such as polyferric silicate sulphate (PFSiS). The aim of the present study is to discuss the possible structure and investigate the surface morphology of PFSiS and, additionally, to evaluate the coagulation efficiency of the reagents by treating a typical ("model") kaolin-humic acid suspension, as well as a biologically pre-treated landfill leachate, in comparison with the relevant iron based, but non-modified coagulant (ferric sulphate, FS). The effect of preparation method, Fe/Si molar ratio, coagulant dosage and pH of test suspension on the destabil-isation ability and coagulation behaviour of PFSiS was also discussed. Overall, it is suggested that PFSiS is an efficient coagulation reagent and it can be possibly considered as a promising option for tertiary treatment of wastewaters, especially for the removal of phosphate ions. Finally, it is emphatically shown that PFSiS exhibit a markedly better coagulation performance, than the non-modified iron-based coagulant (FS).
机译：混凝/絮凝工艺被认为是一项重要的环境保护技术，在水/废水处理设施中得到了广泛的应用。对更有效的凝结工艺的持续需求导致了新型改性凝结试剂的开发，例如聚硅酸硫酸铁（PFSiS）。本研究的目的是讨论PFSiS的可能结构并研究其表面形态，此外，通过处理典型的（“模型”）高岭土-腐植酸悬浮液以及经过生物预处理的垃圾填埋场渗滤液，与相关的铁基但未经改性的混凝剂（硫酸铁，FS）相比。讨论了制备方法，Fe / Si摩尔比，混凝剂用量和测试悬浮液的pH值对PFSiS去稳定能力和混凝行为的影响。总的来说，建议PFSiS是一种有效的混凝剂，可以将其视为废水三级处理，尤其是去除磷酸根离子的有前途的选择。最后，有力地表明，PFSiS的凝结性能明显优于未改性的铁基凝结剂（FS）。

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