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Integrated MBR membrane sewage treatment equipment
Integrated MBR membrane sewage treatment equipment
Product details
Brief introduction
MBR membrane bioreactorMembrane Bio Reactor (MBR) is used for membrane separationOrganic combination of technology and biological treatment technology for new wastewater treatmentSystem. Replacing traditional biological treatment technology with membrane modules in the terminal secondary sedimentation tank, maintaining a high concentration of activated sludge in the bioreactor, increasing the organic load of biological treatment, thereby reducing the footprint of sewage treatment facilities, and reducing the amount of remaining sludge by maintaining a low sludge load. Mainly utilizing membrane separation equipment immersed in aerobic biological tanksThe activated sludge and high molecular weight organic matter in the interception tank. membrane bioreactorThe concentration of activated sludge (MLSS) in the system can be increased to 8000-10000 mg/L, or even higher; The sludge age (SRT) can be extended to over 30 days.
Membrane bioreactors can retain microorganisms with longer generation cycles due to their effective retention functionIt can achieve deep purification of sewage while nitrifying bacteria are present in the systemFully reproduced, its nitrification effect is significant, providing the possibility for deep phosphorus and nitrogen removal
2、 Purpose:
1. Sewage treatment: China is a water scarce country, and sewage treatment and reuse are effective measures for developing and utilizing water resources. Wastewater reuse refers to the treatment of urban and industrial wastewater through membrane bioreactors and other equipment, which is then used for greening and flushing purposes, SupplementFor non drinking purposes such as viewing water bodies, clean water is used for high water quality requirements such as drinking. Urban sewage and industrial sewage can be obtained nearby, eliminating the need for long-distance water transportation and achieving full utilization of water resources through nearby treatment. At the same time, sewage can be treated nearby to prevent sewage leakage during long-distance transportation, which can lead to pollution of groundwater sources. Wastewater reuse has been widely adopted in many water scarce regions around the world and is considered a practical technology for wastewater treatment in the 21st century.
2. Comparison of inlet and outlet water quality:
General urban sewage design inlet water quality: BOD5<300mg/l ； CODcr<500mg/l ； SS<300mg/l ； T-N<45mg/l
Outlet water quality: NH4+-N<5mg/l； CODcr〈50mg/l ； TN<5mg/l； TP<0.5mg/l； Turbidity<5NTU; The total number of Escherichia coli is less than 1000/L.
3、 Membrane classification
There are various types of membranes, which can be classified based on separation mechanisms, membrane properties, and membrane structures.
According to the separation mechanism
There are reaction membranes, ion exchange membranes, permeable membranes, etc.
According to the properties of the membrane
There are natural membranes (biofilms) and synthetic membranes available(Organic and inorganic films).
By membrane type
There is a tablet type availableTube typeSpiral shapedAnd hollow fibersType, etc.
4、 Craftsmanship
MBR is an efficient combination of membrane separation technology and biological treatment method, which originated from replacing the secondary sedimentation tank in activated sludge process with membrane separation technology for solid-liquid separation. This process not only effectively achieves the purpose of separating sludge and water, but also has a three-stage sewage treatment capabilityThe incomparable advantages of traditional craftsmanship:
1. Efficiently performing solid-liquid separation, its separation effect is much better than traditional sedimentation tanks, the effluent quality is good, the suspended solids and turbidity in the effluent are close to zero, and it can be directly reused, achieving sewage resource utilization.
2. The efficient retention effect of the membrane enables microorganisms to be completely retained in the bioreactor, achieving hydraulic retention time in the reactorThe complete separation of hydraulic retention time (HRT) and sludge aging time (SRT) ensures flexible and stable operation control.
3. Due to the MBR combining the aeration tank and secondary sedimentation tank of traditional sewage treatment into one, and replacing all the process facilities of tertiary treatment, it can significantly reduce the footprint and save civil engineering investment.
4. Beneficial for the interception and reproduction of nitrifying bacteria, the system has high nitrification efficiency. By changing the operating mode, there can also be ammonia and phosphorus removal functions.
5. Due to the fact that the age of the mud can be very long, it greatly improves the degradation efficiency of difficult to degrade organic matter.
6. The reactor operates under high volume load, low sludge load, and long sludge age, resulting in extremely low residual sludge production. Due to the infinite sludge age, theoretically zero sludge discharge can be achieved.
7. The system is controlled by PLC, making operation and management convenient.
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