摘要
硅藻土具有独特的微孔结构,比表面积、孔隙率大,表面被大量硅羟基所覆盖,且含有铝、铁金属氧化物等成分,这些特点为制备高效多功能混凝剂提供了条件。本文综述了复合硅藻土混凝剂的制备方法,并讨论了混凝过程中的影响因素,以及将复合藻硅土混凝剂高效地应用于常规混凝剂难以处理的高浓度有机物、重金属离子和藻类的去除及污泥的脱水等方面进行了总结,为相关研究提供基础信息和思路。
Diatomite has unique micropore structure, large specific surface area, huge porosity, and surface was covered with a large number of silicon hydroxy, it also contained iron oxide, aluminum oxide and and other components. That made it possible for the preparation of efficient and multifunctional coagulant. The preparation methods of composite diatomite coagulant and the factors in the process of coagulation were elaborated in this paper. It could be used in the removal of high concentration of organic matter, heavy metal ion, algae in water and used in sludge dewatering etc. , which were difficult for conventional coagulants. This paper provided basic information and ideas for the related research.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2013年第9期1769-1774,共6页
Bulletin of the Chinese Ceramic Society
基金
国家高技术研究发展计划(863计划)项目(2009AA06Z310)
国家自然基金项目(50978067)
十一五水专项(2008ZX07421-002
2009ZX07424-005
2009ZX07424-006)
吉林省科技发展计划资助项目(20116022
20130305017GX)
关键词
硅藻土
ZETA电位
混凝
复合混凝剂
diatomite
Zeta potential
coagulation
composite coagulant
