混合液污泥浓度与污泥回流系统控制策略研究

Study on control strategy of Mixed liguor suspended solids and sludge return system

生物反应池中的混合液污泥浓度(MLSS)是活性污泥系统重要的设计与运行参数。在城市污水处理厂日常运行中,应根据运行条件的变化,如进水水质水量的波动、污泥沉降性能的改变等,实施一定的污泥回流控制策略,以保证生物反应池中合理的活性污泥数量,促进系统的稳定高效运行。

Mixed liguor suspended solids （MLSS） in biological reactor is important for the operation of activated sludge system,which mainly realized by adjusting the operation of sludge return system. This article proposed that, based on the variation of technique, an active control strategy for sludge return should be performed based on fluctuant of inflow and outflow, sludge settleability, etc. in municipal wastewater treatment plants for stable and efficient operation.