| 分置式膜-生物反应器处理生活污水的抗冲击负荷能力 |
| 摘要点击 1222 全文点击 1756 投稿时间：1999-12-29 |
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| 中文关键词 分置式膜-生物反应器 生活污水 冲击负荷 稳定性 有机物去除速率 抗冲击负荷能力 |
| 英文关键词 Recirculated Membrane Bio Reactor(RMBR) domestic wastewater shock loading stability organic removal rate anti shock loading capability |
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| 中文摘要 |
| 分置式膜 -生物反应器处理生活污水的运行结果表明 ,在 3倍于正常水平的冲击负荷下 ,分置式膜 -生物反应器能够正常运行 ,膜过滤出水 COD维持在 1 0 mg/ L以下 ,生物反应器污泥上清液 COD和透膜压力 TMP比正常水平略微上升 ,但在冲击负荷消除后能够恢复正常水平 ,呈现出较强的抗冲击负荷能力 .分置式膜 -生物反应器与普通活性污泥法相比 ,在冲击负荷下 ,其有机物去除速率、污泥浓度都呈现较快增长 ,而污泥混合液 COD浓度上升幅度较小 ,并且在冲击负荷消除后迅速恢复稳态运行 .分析表明分置式膜 -生物反应器的强抗冲击负荷能力来自于膜对污泥的完全截流作用 .膜 -生物反应器的强抗冲击负荷能力意味着该技术出水水质的安全稳定性和操作简便性 . |
| 英文摘要 |
| Under shock loading of triple normal strength Recirculated Membrane Bio Reactor (RMBR)for domestic wastewater treatment exhibited high stability,the effluent COD concentration maintained normal value while mixed liquor supernatant COD value as well as TransMembrane Pressure(TMP)showed only slight increase.On contrast to the model for Conventional Activated Sludge(CAS)system,a model for MBR to describe the variations of COD concentration,the biomass concentration and organic removal capability(R0)was established.The models were employed to simulate the operational behaviors of both RMBR and CAS systems.The results agree well with experimental results:RMBR exhibits higher organic removal capability and higher biomass concentration(MLVSS) than CAS does.Mixed liquor supernatant COD concentration of RMBR increases much slower than CAS and recovers to its normal value rapidly after the disappearance of shock loading.The strong anti shock loading capability and high operational stability of RMBR imply its convenience and endurance in practical operation and the security in treated water quality. |
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