| 好氧颗粒活性污泥的培养及理化特性研究 |
| 摘要点击 2178 全文点击 8820 投稿时间：1998-05-26 |
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| 中文关键词 颗粒活性污泥 厌氧－好氧交替工艺 生活污水处理 生物除磷 |
| 英文关键词 granular activated sludge alternation of anaerobic/aerobic process domestic sewage treatment biological phosphorus removal |
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| 中文摘要 |
| 研究厌氧-好氧交替工艺中好氧颗粒活性污泥的培养和理化特性。在普通好氧曝气条件下,反应器内培养出了好氧颗粒活性污泥,颗粒直径0.5-1.5mm,比重1.007左右,含水率97%-98%.MLSS 4.04-6.88%g/L,SVI 20-45ml/g,一般约30ml/g.颗粒污泥受阻沉降层的均匀沉降速度vs约2.15cm/min,临界浓度时沉降速度值v2约0.35cm/min.颗粒污泥的耗氧速率OURW 1.27mg/(g·min),这些理化指标均优于普通的活性污泥。对于COD浓度372-548mg/L、P浓度9.84-13.57mg/L的生活污水,总COD去除率和除P效率一般分别在90%以上。 |
| 英文摘要 |
| This paper first reports the cultivation and physic chemical characteristics of granular activated sludge in a single alternation of anaerobic/aerobic (AAA) process.It was shown that under conventional condition,the granular activated sludge was formed and observed in the reactor,0.5—1.5 mm in diameter,specific weight about 1.007g/cm3,water content 97%—98%,MLSS 4.04—6.88g/L,SVI 20—45ml/g (normally 30 ml/g),settling velocity in inhibited layer 2.15 cm/min,the settling velocity in compressed layer 0.35cm/min,specific oxygen utilizing rate of sludge (OURw) 1.27mg/(g·min).These properties of the granular activated sludge are better than the parameters of conventional activated sludge.For the domestic sewage treatment of COD 372—548mg/L and P concentration 9.84—13.57mg/L,the COD and P removal efficiencies could reach more than 90%. |
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