Abstract
In this paper, while ceramic membrane fouling and its causes were introduced, the calculation of ceramic membrane fouling resistance, membrane fouling analysis methods and several common ceramic membrane cleaning techniques were summarized. In this process, some factors affecting the cleaning effect were also analyzed by enumerating cases, and the future development of ceramic membrane was prospected.
Highlights
Compared with traditional polymer membranes, ceramic membranes have the advantages of high surface hydrophilicity, good mechanical, physical and chemical stability, and uniform pore size distribution, they are more and more widely used in wastewater treatment
Membrane fouling is a major problem during ceramic membrane application and operation, which is mainly caused by adsorption and deposition of certain components in the filtrate on the membrane surface or in the membrane pores
It is possible that there are bacteria growing on the membrane surface or in the membrane pores, which reduces the membrane flux and causes membrane fouling
Summary
Compared with traditional polymer membranes, ceramic membranes have the advantages of high surface hydrophilicity, good mechanical, physical and chemical stability, and uniform pore size distribution, they are more and more widely used in wastewater treatment. Compared with polymer membrane, ceramic membrane has the long-term low-cost property. In ceramic membrane separation technology, even under suitable operating conditions, membrane fouling will inevitably occur after long-term operation. Membrane fouling is a major problem during ceramic membrane application and operation, which is mainly caused by adsorption and deposition of certain components in the filtrate on the membrane surface or in the membrane pores. In order to recover membrane flux, prolong the service life of the membrane and ensure the filtration performance of the ceramic membrane, the fouling behavior of the membrane must be studied, and certain measures must be taken to clean the membrane fouling, which trapped on the membrane surface or blocked in the membrane pores. This paper reviews the calculation of ceramic membrane fouling resistance, approaches of membrane fouling analysis, methods of characterization analysis, and several common ceramic membrane cleaning techniques
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