In the MBBR method, bio carrier is its core part, which has unique advantages:
⑴Own functional characteristics
The suspended filler floats on the surface of the water when it is not aerated, and does not need to be supported by a fixed bracket, which makes the installation and maintenance of the reaction tank very convenient;
When aerated, the density of the biomedia that grows the biofilm is close to the water, and the mbbr media relies on the stirring effect of aeration to be in a fluidized state, which not only makes the sewage and the biofilm on the filler come into contact extensively and frequently, but also the mbbr bioreactor In the process of fluidization, the air bubbles are cut and dispersed, so that the gas distribution tends to be uniform, and the oxygen utilization rate is also improved.
The resulting solid, liquid, and gas three-phases are fully contacted, mixed and collided, which increases the mass transfer area and improves Improve the mass transfer efficiency and strengthen the mass transfer process
Therefore, when a certain pollutant removal rate is reached, the residence time of the sewage in the tank is shorter. At the same time, even if there is an impact load, the treatment effect can be quickly restored.
In addition, the suspended filler is washed by air and water, and the aging film can fall off automatically, which ensures the activity of the film and promotes the metabolism.
Moreover, the biofilm media fluidized by the water in the reaction tank may also grow a large number of filamentous bacteria, which can use the function of the filamentous bacteria to efficiently degrade organic matter, so that the quality of the effluent is improved, and there is no danger of sludge expansion.
⑵ Convenient maintenance and management.
Since the specific gravity of mbbr biofilter is close to that of water, only a small amount of air is needed to make it uniformly suspended in the water. When using, there is no need for biomedia bracket, just set a grid to intercept the water outlet of the aeration tank, and return it to the front of the tank by the aeration water flow, which can save investment, and it is more convenient to mix and update.
In addition, the operator does not have to worry about the sludge return ratio, the amount of excess sludge removed, and the sludge expansion, as in the case of the activated sludge method system. Therefore, the operation is simple and the workload is small.
⑶The filling rate is easy to choose.
30%-50% (volume ratio) of mbbr biofilter is well fluidized in the aeration tank. For suspended fillers, as long as the oxygen flushing capacity is permitted and the free suspension is ensured, the filling ratio can be selected according to the needs.
If you have interest, please contact Doris
Whatsapp/Wechat: +86 13298186953
Email: doris@juntaiplastic.com
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