农村排污水管理大揭秘这3大要点助你掌握MBR运行控制国标法则

1、MBR影响因素的控制

在膜生物反应器工艺中，膜分离的操作条件类似于传统膜分离，主要控制因素有进水水质、膜面流速、温度、操作压力、pH 值和MLSS等。这些因素对MBR系统性能至关重要，它们共同决定了处理效率和产品质量。

2.5）、溶解氧是影响有机物去除效果的重要因素。在不同的膜生物反应器工艺类型中，混合液以各种形式在生物反应池内形成好氧、缺氧及厌氧段。反应池各段DO的控制范围为：厌氧段在0.2mg/L以下，缺氧段在0.2mg/L～0.5mg/L之间，而好氧段溶解氧浓度宜不小于2mg/L。

4）、membrane fouling membrane fouling is a major issue in MBR systems, where pollutants such as suspended solids and colloids deposit on the membrane surface, reducing its permeability and increasing the pressure required to maintain a certain flow rate.

To mitigate this issue, several measures can be taken:

Pre-treat the influent water to remove coarse particles.

Optimize operating pressures to minimize fouling.

Reduce outflow rates or increase residence times in the bioreactor to allow for better mixing and reduced sedimentation of pollutants.

Implement regular backwashing or air scouring techniques to clean the membrane surface.

Use chemical cleaning agents specifically designed for MBR membranes when necessary.

By controlling these factors and implementing proper maintenance strategies, it is possible to optimize MBR system performance and ensure consistent high-quality effluent production while minimizing energy consumption and environmental impact.