Development and application of ceramic membrane in oily wastewater treatment

摘要

Membrane separation technology, as an important water quality safeguards, has been widely studied and applied in water and wastewater treatment, because of its advantages (low cost, convenient operation, no phase change and no secondary pollution). Compared with organic membrane, the inorganic ceramic membrane with more stable material properties, which can be described as high temperature resistance, acid-alkali resistance and good chemical stability, has more superiority in the complex wastewater, that have the characteristics of strong acidity, alkaline and corrosive, such as oily wastewater. This article summarizes the classification and characteristics of the ceramic membrane, and analyzes its filtration mechanism. The utilization and development of ceramic membrane and its combination process in different types of oily wastewater treatment are discussed. The future development and existing problems to be solved of ceramic membranes is proposed.