低溶解氧膨胀污泥沉降性能的恢复研究  

Study on the recovery of settleability of low DO filamentous bulking sludge

作　　者：周利[1] 彭永臻[2] 宋娇 李凌云[1] 马涛[1] 

机构地区：[1]青岛理工大学山东省环境工程重点实验室,山东青岛266033 [2]北京工业大学北京市水质科学与水环境恢复重点实验室,北京100022 [3]高密市建设工程质量监督站,山东高密261500

出　　处：《工业水处理》2006年第10期49-51,共3页Industrial Water Treatment

基　　金：国家"863"重大科技攻关项目(2003AA601010);山东省教育厅项目(J05N02)

摘　　要：溶解氧是影响丝状菌污泥膨胀的重要因素之一。以石化废水和啤酒废水为处理对象,对低溶解氧污泥膨胀进行了污泥沉降性能恢复的试验研究。结果表明,在较高的DO浓度下运行,能使膨胀污泥的沉降性能恢复到良好状态,且恢复时间及恢复速率均与污泥膨胀程度呈正相关关系。污泥负荷是影响膨胀污泥沉降性能恢复的因素,在一定低污泥负荷下,通过提高DO浓度并不能使低DO膨胀污泥的沉降性能得到有效恢复。Dissolved oxygen is one of the most important factors which influences filamentous sludge bulking. By using brewery wastewater and petrochemical wastewater as influent, the experimental study has been made on the recovery of settleability of bulking sludge happening at low dissolved oxygen operation. The results show that the higher dissolved oxygen concentration can result in the recovery of bulking sludge settleability, and recovery time and rate are in positive correlation with bulking level. Sludge load is a factor affecting the recovery of bulking sludge settleability. Under a certain low sludge load, effectively. the bulking sludge settleability can not be improved effectively.

关 键 词：污水处理 丝状菌污泥膨胀 溶解氧 污泥沉降性能 

分 类 号：X703.1[环境科学与工程—环境工程]