MBR reactor

MBR reactor

Through MBR process treatment, wastewater can be reused. The COD removal rate of MBR is greater than 93%, removing the majority of suspended solids and ensuring good and stable effluent quality. Suitable for the treatment of domestic sewage from various office buildings, hotels, restaurants, government offices, restaurants, factories, as well as organic wastewater from industries such as textiles, beer, papermaking, leather making, food, and oil refining.

Membrane biological reactor is a new and efficient wastewater treatment technology that combines membrane separation technology with biotechnology. The function of the membrane is to replace the secondary sedimentation tank and intercept organisms in the bioreactor,

By maintaining high concentrations of organisms and intercepting high molecular weight solutes, mineralization of incoming organic matter is promoted without the need for further treatment.

Compared with conventional technology, it has the following characteristics:

1. The removal efficiency of pollutants is high, which not only enables efficient solid-liquid separation, but also effectively removes pathogenic microorganisms.

2. The microbial concentration in the bioreactor is high, and MLSS is 3-10 times higher than conventional treatment processes. Therefore, the solvent load of the reactor is high, the equipment is compact, and the footprint is small.

3. The adsorption and long-term contact of high concentration activated sludge prolong the residence time of slowly decomposing macromolecular organic matter, increase its degradation rate, reduce sludge production, and stabilize the effluent quality.

4. Due to the filtration and separation mechanism, it is not afraid of sludge expansion and relies on the filtration and interception effect of the membrane to produce effluent. Even if sludge expansion occurs, it does not affect the quality of the effluent.

5. The amount of remaining sludge is very small, and the cost of sludge treatment and disposal is low. Due to the long SRT and high sludge concentration, the bioreactor serves as an aerobic digestion tank for sludge, eliminating the need for a sludge concentration tank and a sludge digestion tank, and saving the basic investment and operating costs of sludge treatment.

6. The digestive ability has greatly improved. Autotrophic digestive bacteria that oxidize NH3 have a long generation period, slow growth rate, and are prone to loss. In the MBR process, due to the membrane's interception effect and the extension of SRT, a favorable growth environment for digesting bacteria is created, which can improve digestion capacity; At the same time, due to the high sludge concentration in MBR, MLSS can reach up to 20000mg/L, which means that there is a DO gradient from the outside to the inside of the sludge floc particles, forming aerobic, anoxic, and anaerobic zones, thereby achieving denitrification and biological phosphorus removal.

7. The dosage of chemical agents is small and only used for membrane cleaning.

8. The MBR process has a compact structure and is easy to achieve integrated automatic control. MBR technology is applied in urban sewage treatment, and due to its simple process and convenient operation, it can achieve fully automatic operation and management.

9. Its standardized (modular) design enables greater flexibility and adaptability in process operations.

MBR is a new water treatment technology that combines efficient membrane separation technology with activated sludge process. The application of hollow fiber membranes effectively intercepts microorganisms and nitrifying bacteria in wastewater, enabling efficient nitrification reactions and effectively removing ammonia nitrogen from water. At the same time, the large molecular organic compounds that are difficult to degrade in the sewage are intercepted, extending their residence time in the reactor until they decompose. Hollow fiber membranes can effectively achieve sludge water separation, preventing the loss of activated sludge and increasing sludge age. Therefore, MBR does not require a secondary sedimentation tank in traditional processes. The MBR bioreactor is controlled by a programmable logic controller (PLC). The membrane bioreactor adopts an automatic control system throughout the entire process, greatly reducing operational and management costs. The inlet pump runs automatically. When the water level in the bioreactor reaches a high level, the inlet pump stops running, and when the water level drops to a low level, the inlet pump automatically starts. Automatically turn on and off the circulating pump based on the water level in the reclaimed water storage tank. Automatically turn on and off the dosing pump, and adjust the dosing amount as needed. Automatically run the membrane cleaning program. The motor is equipped with overcurrent and overload protection.