Optimized MBBR media configuration scheme: applicable to different sizes of wastewater treatment plants

Background:

With the acceleration of urbanization and the growth of industrial production, wastewater treatment has become an important task to protect the environment and maintain public health. And Moving Bed Biofilm Reactor (MBBR) technology has been widely used in the field of wastewater treatment for its high efficiency and stability. For different sizes of wastewater treatment plants, how to reasonably configure MBBR media has become a key issue to improve treatment efficiency and reduce operating costs. We will explore from large, medium and small sewage plants.

For small wastewater treatment plants:

Small-scale wastewater treatment plants, the treatment capacity is usually relatively small, but the requirements for treatment efficiency and operational stability are also high. It is recommended to use high surface area, pollution resistance of MBBR media, such as high-quality polyethylene material made of media ball. Such media balls have good adhesion and biofilm stability and are suitable for small treatment systems.

For medium-sized wastewater treatment plants:

Medium-sized wastewater treatment plants have a larger treatment capacity and require more operational details and operating parameters to be considered in the treatment process. In this case, a variety of MBBR media sizes can be used, such as containing both larger surface area fillers and fillers with smaller particles to increase biofilm diversity and stability. In addition, depending on the water quality characteristics, the ratio of media can be adjusted to improve treatment efficiency.

For large wastewater treatment plants:

Large wastewater treatment plants usually have huge treatment capacity and complex treatment processes. For this situation, a multi-level, multi-functional MBBR media configuration program is required. Different levels of filler can be set up in the reactor, such as the bottom layer of larger particles, strong adhesion of filler, medium-sized filler in the middle layer, the top layer of smaller particles of filler to ensure adequate growth and adhesion of the biofilm. At the same time, the operating parameters of the system such as aeration and agitation need to be considered to maintain a balanced distribution of oxygen and nutrients in the reactor.

Conclusion: 

The optimization of MBBR media configuration scheme is of great significance for wastewater treatment plants of different sizes. By reasonably selecting the media type, configuration ratio and operating parameters, the treatment efficiency can be improved, the operating cost can be reduced, and the sustainable development of wastewater treatment plants can be realized. Therefore, when designing and operating wastewater treatment systems, the optimization strategy of MBBR media configuration scheme should be fully considered to achieve the best environmental and economic benefits.