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Advantages of MBR wastewater treatment process


(1) Can effectively remove pollutants


The MBR sewage treatment process can comprehensively remove suspended solid particles in sewage. The membrane of the biomembrane module has a low porosity, with a pore size of about 0.01um, which can intercept all suspended solids and sludge in the reactor. At the same time, it has a good solid-liquid separation effect. The rejection rate exceeds 99%, and the turbidity treatment of sewage exceeds 90%. The turbidity of its effluent can be compared with that of tap water. Due to the good interception effect of the biofilm module, all the activated sludge in the sewage is left in it, and the sludge concentration in the reactor can reach 40-50g / L, which reduces the bioreactor ’s Sludge load. The MBR sewage treatment process has a COD removal rate of over 94% for domestic sewage and a BOD removal rate of over 96%. It should be noted here that when sewage treatment is carried out, a membrane module with a more appropriate porosity should be selected for sewage treatment. At the same time, the MBR sewage treatment process can also have a better treatment effect on a variety of bacteria and viruses, thereby simplifying sewage Process flow .


(2) High flexibility and practicality


In the treatment of sewage, the entire process of the traditional treatment process is long, the equipment occupies a large space, and at the same time, the quality of the effluent cannot be guaranteed to meet the quality standards. However, the MBR wastewater treatment process has a shorter process and a smaller footprint, and it is also more flexible when it comes to wastewater treatment. When controlling the water volume, the biofilm module can be increased or decreased according to the actual requirements of sewage treatment, so as to complete the flexible adjustment of the water output. The whole process is extremely simple and easy to operate. In the traditional sewage treatment process, the solid-liquid separation technology is to use a secondary sedimentation tank to separate solids and liquids. However, this method is easy to cause the expansion of sludge, and the MBR wastewater treatment process does not require the use of secondary sedimentation tanks. It can complete the solid-liquid separation, greatly reducing the complexity of operation management, making the sewage treatment process more practical, and the MBR sewage treatment technology can realize the automatic control of sewage treatment, which meets the sewage treatment enterprises' needs for automation of sewage treatment technology.


(3) Solved the problem of sludge treatment


In the traditional sewage treatment process, the sludge treatment requires a separate process design, which leads to the situation that the entire process flow is too cumbersome to improve the efficiency of sewage treatment. The MBR wastewater treatment process can leave all the sludge in the reactor, thereby reducing the sludge load. The nutrients in the reactor are relatively scarce. The microorganisms in the sludge are located in the endogenous respiration area. The sludge yield is extremely low, resulting in very little residual sludge production, and the SRT is effectively extended. The residual sludge concentration in the MBR sewage treatment process is extremely high, and the sludge can be directly dehydrated without the concentration operation of the sludge during the treatment, which saves the sludge treatment process and also increases the efficiency of sludge treatment , Reduce the cost of sewage treatment process, solve the problem of sludge treatment. Relevant data show that the optimal sludge discharge time of MBR should be around 35 days when treating domestic sewage.