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SMBR中梯型平板膜组件增强曝气作用的数学模型分析 被引量:2

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摘要 针对目前应用较广的平板膜竖直结构提出改进,设计具有一定的倾斜角度θ的梯型平板膜结构,使其在保持膜面附近气泡错流速度的同时增加气泡与膜面弹性碰撞的强度与次数,提高膜面曝气冲刷效率,高效控制膜污染,最终降低SMBR中由强曝气所产生的高能耗.通过对Vries建立的气泡与竖直平板相互碰撞数学模型的推导和改进,利用计算机迭代运算技术得到一定曝气位置下不同气泡大小范围内的相对适宜的倾斜角度θ.最后对于SMBR实际应用中多组平行放置的单片梯型膜提出建议,设计膜组件间隔8~15mm,并在组件间5~7mm位置进行曝气,梯型膜设计的最佳角度θ在1.7°~2.5°之间.
出处 《中国科学(E辑)》 CSCD 北大核心 2009年第7期1338-1346,共9页 Science in China(Series E)
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