改性沸石在污水处理工艺中的应用进展

Advances on application of modified zeolite in wastewater treatment process

改性沸石结构稳定、成本低廉、应用广泛,是近年来水处理行业研究的热点.综述了沸石分子筛在水处理领域的应用进展及前景,如饮用水处理工艺强化混凝、强化沉淀及强化过滤过程,污水处理工艺深度处理过程,污泥处理工艺中有机物及氨氮回收等.

Natural zeolites have a variety of crystal structures and a large surface area,their surface has permanent electronegativity,good thermal stability and adsorption properties.Modified zeolites possess developed pore structure and unique ion exchange property,showing an outstanding adsorption capacity.This paper reviews the progress and prospect of the application of modified zeolites in water treatment,including the enhanced coagulation,enhanced precipitation and enhanced filtration processes for drinking water treatment,the deep treatment process in sewage treatment,and the recovery of organic matters and ammoniacal nitrogen in sludge treatment process.Modified zeolites,with stable structure,low cost and wide application,have become a hot topic in the field of water treatment in recent years.