共沉淀法在水处理中的应用研究进展

Application and Research Progress of Co-precipitation in Water Treatment

共沉淀法具有处理费用低、设备简单、操作管理方便、处理效果好等特点,逐渐应用于水处理领域,并显示出其工程优势。着重介绍了氢氧化物共沉淀和铁氧体共沉淀法的机理、水处理效果、影响因素和研究方向,并简单介绍了其他几种共沉淀法在水处理中的研究应用。同时,给出了一些国内的应用实例。在此基础上,提出了其今后的发展趋势,分析认为共沉淀法的组合工艺、共沉物的稳定性是研究的重点。

The co-precipitation method was gradually applied in the water treatment field in recent years. The method showed some advantages such as low cost, simple equipment, convenient operation and good treatment effect. The mechanisms, water treatment results, influencing factors and future study of hydroxide co-precipitation and ferrite co-precipitation processes were emphatically introduced. Several other co-precipitation processes in water treatment were simply introduced. Meanwhile some domestic full-scale application examples were given. On the basis of them, the development directions of co-pre- cipitation technology were proposed. To develop combined processes and to study co-precipitate stability were considered to be the key points for future research.