摘要
为了防止城市污水处理中二沉池污泥上浮,针对污泥上浮原因进行了分析,提出了增加进水溶解氧浓度、缩短污泥停留时间、保持进水水量的相对稳定和合适的回流比等措施,以保证二沉池内活性污泥的稳定性,避免二沉池污泥上浮和活性污泥的大量流失,提高污水处理系统运行的稳定性,确保出水水质达到国家标准.
In order to prevent sludge floatation of secondary sedimentation tank in municipal wastewater treatment,this paper analyzes the causes of sludge floatation and puts forward measures such as increasing dissolved oxygen concentration of the influent,shortening residence time of sludge,maintaining relative stability of influent quantity and appropriate reflux ratio to guarantee the stability of activated sludge in secondary sedimentation tank,prevent sludge floatation of sedimentation tank and huge drain of activated sludge,and improve operating stability of sewage treatment system and make sure the effluent quality reaches national standard.
出处
《江苏建筑职业技术学院学报》
2012年第1期44-46,共3页
Journal Of Jiangsu Vocational Institute of Architectural Technology
关键词
二沉池
污泥上浮
活性污泥
停留时间
溶解氧
secondary sedimentation tank
sludge floatation
activated sludge
residence time
dissolved oxygen
