浸没外压式中空纤维膜组件的最佳尺度分析  

Optimizing and designing of submerged outside-inside hollow membrane module

作　　者：苗蕾[1] 王捷[2,3] 罗南[2] 张燕[2] 

机构地区：[1]天津膜天膜科技有限公司,天津300457 [2]天津工业大学环境与化学工程学院,天津300160 [3]天津工业大学中空纤维膜材料与膜过程教育部重点实验室,天津300160

出　　处：《天津工业大学学报》2009年第6期1-6,10,共7页Journal of Tiangong University

基　　金：国家自然科学基金资助项目(50908161);科技部973计划前期研究专项课题(2008CB417202)

摘　　要：选定轴向通量分布系数和比能耗产水效率作为目标函数,建立中空膜纤维在两相流场中外形尺寸的优化模型.根据数值模拟分析可知:短纤维的膜污染趋势较小,但相应的比能耗效率随之下降;扩大纤维内径有利于提高膜的抗污染性,但会减小膜纤维填充密度而使比能耗产水率降低.当膜纤维内外径为常数(Di=0.6mm、Do=1.1mm)、设计通量为16～22L(/m2·h)时,最佳的膜纤维长度为1.45～1.86m;而当膜纤维内径在0.5～1.0mm范围内时,随着内径的增加,最佳的膜纤维长度范围为1.24～3.72m.The optimization model of fiber dimension of membrane bioreactor is presented by selecting the axial flux distribution coefficient and energy consumption product as objective functions. The numerical simulation shows that fiber length is proportional to membrane fouling and inversely proportional to energy consumption product. Increasing fiber diameter could prevent fouling, but it reduces packing density and leads to less energy consumption product. A fiber length range 1.45-1.86 m was recommended when the design flux is 16- 22 L/（m2·h） with the inner diameter 0.6 mm and outer diameter 1.1 mm. With the inner fiber increasing from 0.5 mm to 1 mm, the calculated fiber length is 1.24-5.72 .m.

关 键 词：浸没式膜-生物反应器 中空纤维膜 比能耗产水率 通量分布系数 膜污染 

分 类 号：TS102.528.1[轻工技术与工程—纺织工程] X172[轻工技术与工程—纺织科学与工程]