SUFR系统活性污泥特性及稳定性研究
Study on characteristics and stability of activated sludge in SUFR system
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摘要: 通过实验考察了SUFR系统中活性污泥的特性及进水COD浓度、SRT和停运对稳定性的影响。结果表明：SUFR系统的污泥颗粒直径多在0.7～0.9 mm之间，属于小颗粒污泥，污泥沉降性能良好；对氮、磷有较好的去除效果。SUFR系统氮的去除对SRT有一定的耐冲击负荷，但受进水COD的影响较大；磷的去除对进水COD和SRT有较好的冲击能力；系统在经过72 h停运后污泥沉降性、脱氮与除磷效果都有较大降低，但基本在1周内就可恢复。Abstract: Characteristics of activated sludge， influence of influent COD concentration， SRT and the interrupting operations on stability in SUFR system were studied. The results shows that the sludge particle diameter in SUFR system belongs to small particle sludge ranging from 0.7 to 0.9 mm，and the settling characteristics of the sludge，as well as the removal effects to nitrogen and phosphorus are good. The removal effect of N in SUFR system to SRT has some resistance to shock loading， but it is largely influenced by influent COD. The removal effect of P has good resistance ability to the change of SRT and influent COD. After the break of the operation for 72 hours in SUFR， the settling performance of the sludge and removal effects of N and P decreased obviously，but the system can return to normal in almost one week.
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Key words:
- spiral-up flow reactor process /
- activated sludge /
- COD /
- SRT
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