Microbubble Generation with the Aid of a Centrifugal Pump

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• 作者：Rosangela Cristine da Silva Henauth ; Robson de Souza Vasconcelos ; Alex Elton de Moura ; Leonie Asfora Sarubbo and Valdemir Alexandre dos Santos
• 刊名：Chemical Engineering & Technology
• 出版年：2017
• 出版时间：January, 2017
• 年：2017
• 卷：40
• 期：1
• 页码：138-144
• 全文大小：591K
• ISSN：1521-4125

文摘

For saturation of water treated with atmospheric air in a dissolved air flotation (DAF) system and the production of microbubbles, air was introduced through the suction pipe of a centrifugal pump. The operating conditions of the centrifugal pump were adjusted to avoid the occurrence of cavitation phenomena. The novel technique was applied for the treatment of oily water in a DAF pilot prototype. A central composite rotational design (CCRD) was used to determine the high efficiency of the separation process. In addition to this high degree of oil-water separation, the technique reduces space and energy costs in comparison to conventional processes of saturation of the effluent treated with compressed air.