膜科学与技术

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Immersed tubular MBR and its membrane process

Authors： ZHU Chunping, ZHANG Chunfang, BAI Yunxiang, SUN Yuping, Gu Jin

Units： The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Materials Engineering, Jiangnan University, Wuxi 214122

KeyWords： tubular MBR; pollution resistance; module structure; boundary layer

ClassificationCode：TQ 028.8

year,volume(issue):pagination： 2015,35(5):24-29

Abstract：

From the view of fluid mechanics, the characteristics of tubular MBR membrane filtration process were studied. Results showed that the cylindrical shape characteristics of the single tube membrane caused the change of the boundary layer and enhanced the turbulence compared to the general flat membrane surface, it is more conductive to curb the formation of pollution layer on the membrane surface. The mutual interference effect of boundary layer between membrane tubes in the module changed the form of the boundary layer of the single tube membrane, intensified the disturbance, effectively reduced the pollution layer formation. Tubular MBR of triangular staggered structure due to its neat geometric shapes can achieve good hydraulic characteristics and high membrane flux, the isosceles staggered structure is next, in-line structure is relatively weak; appropriately increasing aeration strength can enhance the interaction of the gas-liquid mixed flow between the membrane tubes.

Funds：

江苏省产学研前瞻性联合研究项目（BY2013015-06）和（BY2013015-28）资助；

AuthorIntro：

朱春瓶（1990-），女，硕士，主要研究方向，膜分离

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