Medical wastewater treatment is crucial for hospitals. The treatment process is determined according to the scale and nature of the hospital, until the Medical Wastewater Online Monitoring confirms that the effluent meets the discharge standards. This article mainly introduces the characteristics of medical wastewater treated by the MBR process.
1.This treatment method uses a membrane bioreactoras the main treatment unit. The unit has strong shock load resistance, stable effluent quality, and all treatment structures are underground with a small footprint.
2.The MBR process provides high-efficiency solid-liquid separation. The effluent has a low concentration of suspended solids. Bacteria and viruses lose their attachment or coating barrier, making them easy to inactivate. Therefore, MBR can effectively remove SSand bacteria.
3.In addition, the membrane module has an efficient interception effect, which maintains a high biomass concentration in the reactor and improves the efficiency of biological treatment. The interception effect enriches microorganisms, allowing nitrifying bacteria with a long generation cycle to be retained and reproduced, resulting in an excellent nitrogen removal effect.
4.The microporous aeration inside the reactor improves oxygen transfer efficiency and optimizes the hydraulic conditions. It provides sufficient dissolved oxygen for biological contact oxidation and facilitates water scouring on both sides of the membrane. It enhances the shear effect of gas on the membrane, which is beneficial to the mass transfer between gas and liquid phases, ensuring a stable and reliable treatment process.
After treatment, medical wastewater produces excess sludge containing a large number of bacteria and pathogenic microorganisms. Improper disposal will cause secondary pollution.
Different Treatment Methods Dhould be Sdopted Sccording to Dpecific Conditions:
– For infectious disease hospitals, secondary treatment is required, followed by disinfection with disinfectants.
(If chlorine-based disinfectants are used, an RCl900 Online Total Residual Chlorine Analyzer should be installed for real-time monitoring to avoid excessive dosing.)
– If the treated effluent is discharged into natural water bodies, the treatment level shall be determined according to the hospital grade. Hospitals at or above the county level also need to adopt secondary treatment.
In general, the treatment scheme shall be determined according to the nature and scale of the hospital.
