By: Sunny Wu（sunny7@juntaiplastic.com）
Post Date: Nov 27th, 2021
Post Tags: How to Choice MBBR Reactor?
How to Choice MBBR Reactor?
MBBR (Moving Bed Biofilm Reactor), The MBBR reactor process principle is to increase the biomass and biological species in the reactor by adding a certain amount of suspended carriers to the reactor, thereby improving the processing efficiency of the reactor. Since the density of the filler is close to that of water, it is completely mixed with water during aeration, and the environment where microorganisms grow is gas, liquid, and solid. The collision and shearing effect of the carrier in the water makes the air bubbles smaller and increases the utilization rate of oxygen. In addition, each carrier has different biological species inside and outside, with some anaerobes or facultative bacteria growing inside, and good cultivating bacteria outside, so that each carrier is a micro-reactor, so that nitrification and denitrification reactions exist at the same time. , Thereby improving the treatment effect.
1.Material
The MBBR Reactor process is one-time dosing, a new process that does not need to replace the biological filler, so the material requirements are very high. Generally, the life of the biological filler of high-purity HDPE material can reach more than 15 years(Juntai Guarantee uses 100% virgin HDPE material). If you use inferior materials, it is easy to cause the biological filler to break and block the pipeline in the later use project.
2. Production process level
The geometric structure of the bio-filler is designed through fluid mechanics, which is generally cylindrical and porous. In the production engineering, the production process technology of the manufacturer is extremely high, from the development of the mold to the professional production machine and the temperature and speed in the production process. Debugging is very important. For example, some biological fillers with uneven wall thickness are prone to insufficient toughness.
3. Specific surface area
The specific surface area of the biological filler directly affects the number of microorganisms cultivated in a unit cubic water body, and the more the number of microorganisms cultivated, the stronger the sewage treatment capacity. However, in the actual filler selection, the specific surface area of the biological filler is not only considered, but also the diameter and pore size of the filler. The size of the filler diameter is related to the aperture of the interception net. The pore size of the filler will not only affect the specific surface area, but also whether the aging biofilm is easy to fall off. At present, some MBBR reactor biological fillers on the market have a large specific surface area, but the pores are very small. However, after one or two years of actual operation, the aging biofilm could not fall off, causing the water quality to fail to meet the standard in the later stage.
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