摘要
针对丝状菌污泥膨胀造成改良式氧化沟工艺处理城市生活污水超标的问题,通过分析进水水质、溶解氧、温度、污泥膨胀指数、出水水质变化的关系,探讨了导致丝状菌膨胀的主要限制因子以及出水水质的变化.研究结果表明,此工艺中进水BOD5、CODcr、TP浓度和pH值变化不是导致污泥膨胀的原因,进水TN和环境温度对污泥膨胀略有影响,DO、NH3-N变化与SVI有较强的相关性,DO和NH3-N越高,SVI越低.
Filamentous bulking is responsible for the excess of effluent quality from wastewater Treatment plant with modified carrousel oxidation process. In this paper, the main factors causing filamentous bulking and the effluent quality change were discussed by analyzing the relationship among wastewater quality, dissolved oxygen, temperature, sludge bulking and effluent quality. The results indicate that the change of influent BOD5 , CODor, TP and pH value is not related to filamentous bulking, that influent TN and environment temperature change have a slight impact on filamentous bulking, that the activated sludge dissolved oxygen and influent NH3-N is highly relevant to the filament bulking,and that the concentration of DO and NH3-N is negatively correlative to the value of SVI.
出处
《南昌工程学院学报》
CAS
2012年第3期51-54,共4页
Journal of Nanchang Institute of Technology
关键词
氧化沟
污泥膨胀
溶解氧
污泥负荷
丝状菌
oxidation process
sludge bulking
dissolved oxygen
sludge loading
filamentous
