What is the role of MBBR media retention sieve

1. Prevent the loss of filler
Ensure the stability of biofilm carrier:
In the MBBR (moving bed biofilm reactor) system, filler is the carrier of microbial growth, and its stable existence in the reactor is crucial to the sewage treatment effect. MBBR media interception net can effectively block the filler and prevent it from flowing out of the reactor with the water flow.
This ensures that the biofilm is always attached to the filler, maintains a stable biomass, and ensures the continuous degradation of organic matter, nitrogen, phosphorus and other pollutants by microorganisms during sewage treatment.
Maintain the stability of system operation:
If there is no interception net, the large loss of filler will lead to a sharp decrease in biomass in the system, destroy the integrity of the biofilm, and thus reduce the sewage treatment efficiency. At the same time, the lost filler may clog the pipes, damage the equipment, and affect the normal operation of the entire sewage treatment system.
The existence of the media interception net can avoid these problems and enable the MBBR system to operate stably for a long time.

2. Optimize water flow distribution
Uniform water flow:
The structural design of the interception net can play a certain role in regulating the water flow. It can make the water flow more evenly distributed when passing through the interception net, avoiding the situation where the local water flow is too fast or too slow.
Uniform water flow distribution is conducive to the full fluidization of the filler in the reactor, increasing the contact opportunity between the filler and the sewage, enhancing the mass transfer effect, and thus improving the removal efficiency of pollutants.
Reduce turbulence:
Reasonable interception net design can also reduce turbulence in the water flow. Turbulence will cause a greater impact on the filler and biofilm, affecting the stability and life of the biofilm.
By reducing turbulence, the interception net can protect the biofilm, extend its service life, and reduce the energy consumption of the system.

3. Convenient maintenance and management
Convenient filler recovery:
When the system is overhauled, maintained or the filler is replaced, the interception net can play a role in blocking the filler, which is convenient for the centralized recovery of the filler. This can reduce the loss of filler and reduce maintenance costs.
At the same time, the recovered filler can be put into use again after cleaning, disinfection and other treatments, thereby improving the utilization rate of the filler.
Easy to observe and monitor:
The interception net is usually installed at a specific position of the reactor, which is convenient for the operator to observe the state of the filler and the water flow. By observing the accumulation of filler and the growth of biofilm on the interception net, the operating status of the system can be understood in time, providing a basis for adjusting operating parameters and performing maintenance management.
In addition, some interception nets can also be equipped with monitoring equipment such as sensors to monitor water flow speed, pressure and other parameters in real time, further improving the system's automated management level.

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