| 超滤膜-生物反应器处理生活污水及其水力学研究 |
| 摘要点击 1638 全文点击 2797 投稿时间：1996-11-06 |
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| 中文关键词 超滤膜 生物反应器 生活污水 水力学 污泥粘度 膜面流速 边界层厚度 |
| 英文关键词 ultrafiltration membrane bioreactor domestic wastewater hydraulic behavior boundary layer thick |
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| 中文摘要 |
| 用超滤膜-生物反应器进行处理生活污水试验并研究其水力学行为。结果表明:当HRT为5h、SRT为30d、膜面流速为4m/s、膜通量为75L/(m2·h)时,试验出水水质优于建设部生活杂用水水质标准CJ25.1-89,可直接回用。该反应器的去除率COD>98%、NH3-N>97%、浊度≥98%,SS和总E.coli则达到100%.探讨了污泥粘度η与污泥浓度MLSS以及给定临界雷诺数时最小膜面流速νmin与污泥浓度MLSS之间的关系。计算得到典型雷诺数为4×103-2×105时,水力边界层厚度δ约185-5.9μm,传质边界层厚度δc约18.5-0.59μm。 |
| 英文摘要 |
| It is proven that Ultrafiltration Membrane BioReactor(UMBR)applied to domestic wastewater treatment, under conditions of hydraulic retention time 5h,sludge retention time 30d,membrane surface velocity 4m/s and membrane flux75L/(m2·h),is technically feasible and reliable during several weeks.Removal rate of COD,NH3-N,and turbidity of the systme are equal to or higher than 98%,97% and 98%,SS and E.coli.,100%.The effluent quality is always better than the quality standard for reuse issued by the Ministry of Construction in China.Furthermore,the hydraulic behavior of UMBR is concisely discussed.The hydraulic boundary layer is about 185—5.9μm thick,and the mass transfer boundary layer,18.5—0.59μm when the typical Reynolds number is 4×103—2×105. |
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