城市污水处理厂的污泥膨胀研究分析

Study and analysis on sludge bulking in municipal wastewater treatment plants

通过对北京市大型城市污水处理厂优势丝状菌鉴定及温度、生物选择器和溶解氧对污泥膨胀影响的研究分析,发现脱氮除磷工艺普遍会在冬季发生由Microthrix parvicella菌引起的污泥膨胀。研究了温度与SVI的变化规律,分析了出水亚硝酸氮和SVI的相关性,并对生物选择器和不同DO浓度对污泥膨胀的影响进行了分析。

Through the identification of the predominant filamentous organisms and the study and analysis on the effects of temperature, selector, and dissolved oxygen on sludge bulking, it was reported that sludge bulking caused by Microthrix parvicella would usually happened in biological nutrient removal process during winter. Studied the relationship between temperature and SVI,and analyzed the correlation between effluent nitrite nitrogen and SVI, and the effect of selector and dissolved oxygen on sludge bulking was also investigated.