UNITANK系统不同运行方式下污泥膨胀的特点与控制  

Sludge bulking and its control in UNITANK system under various operation conditions

作　　者：王海东[1] 王淑莹[1] 彭永臻[1] 于德爽[1] 

机构地区：[1]北京工业大学环境与能源工程学院,北京100022

出　　处：《给水排水》2005年第3期37-40,共4页Water & Wastewater Engineering

基　　金：北京市自然科学基金资助项目(80022006)北京市重点实验室项目北京市重点实验室开放基金。

摘　　要：由于连续进水、连续出水的UNITANK系统在流态上接近完全混合,基质浓度梯度大大降低,这对于控制污泥膨胀是较为不利的。试验表明,UNITANK系统的单级好氧处理系统在较低或较高的有机负荷下易发生污泥膨胀,在中等负荷下若使得进水池溶解氧充足则可控制污泥膨胀的发生;脱氮除磷处理系统由于进行缺氧搅拌的边池可起到缺氧选择器的作用,其不发生污泥膨胀的有机负荷限值范围较单级好氧处理系统大;与SBR系统相比,UNITANK系统控制污泥膨胀的能力相对较弱。Due to the flow pattern of continuous inlet and outlet UNITANK system is proximate to complete mixing with very low substrate gradient, it is unfavorable to sludge bulking control. However, unfortunately sludge bulking might be easy to met in single stage aerobic UNITANK system with lower or higher organic loading, even in case of medium loading if the DO level is not suffice enough in the inlet tank. Owing to the effect of anoxic compensator by the anoxic agitating in the side container, the adequate non-bulking range of applied maximum and minimum organic loadings will be wider for the P and N removal system than that of single stage aerobic UNITANK system. Comparing with SBR system, the sludge bulking protective capacity of UNITANK system is lower.

关 键 词：污泥膨胀 好氧处理 有机负荷 SBR系统 脱氮除磷处理 单级 溶解氧 控制 缺氧 限值 

分 类 号：TU991[建筑科学—市政工程] X703[环境科学与工程—环境工程]