水滑石材料处理工业废水的研究进展

Research Progress of Industrial Wastewater Treatment by Hydrotalcite

工业废水主要由工业生产过程中产生的污水和废液组成,具有成分复杂、种类繁多、差异性大、难以处理等特点。主要综述了水滑石常用的制备方法,利用壳聚糖法、等离子体法、农业废弃物法进行改性制备复合材料。水滑石材料在吸附过程中多呈粉末状,难以回收,且工业化应用较少。针对以上问题,可采用引入Fe离子产生磁性,利于回收;通过开发更低廉的合成材料、简单快捷的制备方法、稳定的理化性质使水滑石材料得以工业化应用。水滑石复合材料在层板中引入磁性物质有助于回收,随着水滑石技术的深入研究和新工艺的发展,处理有毒污染物的前景必定会更广阔。

Industrial wastewater is mainly composed of sewage and waste liquid produced in industrial production process,which has been characterized by its complex composition,wide variety,large difference and difficulty in treatment.The commonly used methods for preparation of hydrotalcite were reviewed,such as chitosan method,plasma method and agricultural waste method.Hydrotalcite materials in the adsorption process are mostly in powder,which is difficult to be recycled,and rarely used in industry applications.In view of the above problems,Fe ions can be introduced in hydrotalcite materials to generate magnetism,which is be beneficial to recovery.By developing cheaper synthetic materials,simple and fast preparation methods,stable physical and chemical properties of hydrotalcite materials,industrial applications could be achieved.The introduction of magnetic materials into hydrotalcite composites can help to recycle.With the in-depth study of hydrotalcite preparation technology,the prospect of dealing with toxic pollutants will be better.