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MBBR Technology: Efficiency in Wastewater Treatment

MBBR Technology

What is MBBR technology?

MBBR (Moving Bed Biofilm Reactor) technology is a method of treating wastewater using biosolids to remove organic matter and other contaminants in wastewater.
Wastewater treatment in MBBR technology occurs when wastewater is recirculated in the system with biosolids. Microorganisms attach to the surface of the biosolids in contact with the wastewater and decompose the organic matter contained in it into non-toxic substances, CO2 and water. This process takes place in an oxygen-rich environment which provides favorable conditions for microbial growth and activity.

The principle of operation of MBBR technology:

  1. Oxygen supply: Wastewater is supplied with oxygen to facilitate the growth and activity of microorganisms that decompose organic matter. Oxygen can be supplied by introducing oxygen gas into the system or through the process of waste water circulation.
  2. Biosafety: The MBBR system contains a large amount of biosafety, usually small plastic pellets with a large surface. This carrier is able to move itself during wastewater treatment.
  3. Biofilm formation: When wastewater is introduced into the system, microorganisms that are natural or added from external sources attach to the surface of the scaffold. These microorganisms form a dense biofilm on the scaffold, called biofilm.
  4. Wastewater treatment: During treatment, the biofilm moves through the system, creating an ideal environment for microorganisms to live in. The microorganisms in the biofilm break down the organic matter in the wastewater into non-toxic substances, CO2 and water.
  5. Biosafety separation: After treatment, the wastewater contained in the MBBR system is separated from the biosafety. The treated wastewater is led out of the system for reuse or safe discharge into the environment.
From this operating principle, MBBR technology is capable of efficient wastewater treatment, which removes organic matter, nitrogen and phosphorus from wastewater. It also has good load bearing capacity and flexibility in adjusting the treatment process, reducing the operating area compared with traditional technologies.
MBBR 폐수 처리 기술

What is the MBBR technology system?

The MBBR technology system consists of the following main components:
  • Treatment tank: This is where the biological substrate is located and the wastewater treatment process takes place. The tank can be multi-tiered to increase the contact area between the wastewater and the substrate, providing favorable conditions for microbial growth and organic matter decomposition.
  • Gas supply system: To maintain microbial growth, MBBR systems need to deliver oxygen or nitrogen gas. This is usually done through components such as air compressors and gas dispensers.
  • Overflow Discharge System: During treatment, the wastewater that has been treated through the MBBR tank is discharged out of the system through an overflow discharge system. This process ensures that the treated wastewater meets the specified wastewater quality requirements.

Overview of MBBR technology:

Advantages of MBBR technology:
  1. High treatment efficiency: MBBR technology is capable of effectively treating organic matter in wastewater. With the existence of biofilm on the substrate, microorganisms can effectively decompose organic matter, ensuring the quality of wastewater after treatment.
  2. Flexible and Expandable: MBBR has good load-bearing capacity and is flexible in adjusting the treatment process. Can change the amount of substrate and wastewater flow to meet different treatment requirements. Moreover, the MBBR system can be easily expanded or upgraded as needed.
  3. Space saving: Compared with traditional treatment systems, MBBR saves operating area. Since the removable rack moves in the system, there is no need to use large tanks, which reduces the area required for wastewater treatment.
  4. Easy to integrate and simple operation: MBBR technology can be easily integrated into existing wastewater treatment systems. It does not require complex equipment and the operation process is simple, which reduces operating costs and effort.
Limitations of MBBR technology:
  1. Technical management requirements: MBBR requires specialized knowledge and skills in the management and regulation of the process. To ensure maximum performance, it is necessary to monitor and control factors such as the amount of substrate, oxygen supply, and microorganisms in the system.
  2. Sensitivity to environmental changes: MBBR may be sensitive to environmental changes such as changes in temperature, pH, wastewater flow, and organic matter. These changes may affect microbial activity in biofilm and impair treatment performance.
  3. Sludge generation capacity: During the treatment, MBBR can produce a certain amount of biological sludge. This sludge needs to be treated and removed appropriately to avoid blockages and reduce system performance.

Important applications of MBBR technology

MBBR technology has been widely applied in many fields of wastewater treatment. One of the important applications of this technology is in household and community wastewater treatment. MBBR is capable of effectively treating organic substances in wastewater, ensuring wastewater quality meets environmental standards.
In addition, MBBR technology is also used in industrial wastewater treatment. Industries such as food and aquatic processing, pharmaceutical, chemical and alcohol industries have adopted MBBR technology to treat production wastewater. MBBR is capable of effectively treating complex organic matter and other pollutants present in industrial wastewater.

Here are some typical MBBR projects:

  1. Växjö Project, Sweden: The city of Växjö in Sweden has implemented MBBR technology to treat wastewater from residential areas and service points. The MBBR system has helped improve wastewater quality and meet the strict environmental requirements of the region.
  2. Halong Bay Project, Vietnam: The MBBR system has been used to treat wastewater in Halong Bay, a world heritage site in Vietnam. This technology helps reduce the pollution load on the water environment and protects the unique characteristics of the bay.
  3. Dubai Sustainable City Project, United Arab Emirates: Dubai Sustainable City is a sustainable development project in Dubai where the MBBR system is used to treat domestic wastewater and reuse water. This is an example of using MBBR technology to build smart and environmentally friendly urban areas.

FAQ about MBBR technology?

Is there a need for bioscale in MBBR technology? Yes, slates play an important role in MBBR technology. They create a large contact area between wastewater and microorganisms, making the treatment process efficient.
Do I need to supply oxygen to the MBBR system? Yes, in order to maintain microbial growth, the MBBR system needs to provide oxygen or nitrogen gas. This ensures the microorganisms have the conditions to decompose organic matter in the wastewater.
Is it possible to combine MBBR technology with other technologies? Yes, MBBR technology can be combined with other technologies to enhance wastewater treatment performance. For example, MBBR can be combined with biological foaming technology (MBBR-MBR) to achieve high filtration efficiency and better wastewater quality.
How often do I need to clean and replace the MBBR system? The time taken to clean and replace the carrier in an MBBR system depends on the wastewater condition and operating conditions. Typically, the scaffold needs to be cleaned and replaced after a period of 5 to 10 years. However, this needs to be evaluated on a case-by-case basis.

Conclusion on MBBR technology

MBBR technology is an advanced and efficient wastewater treatment technology. With the simple but effective operation principle, MBBR has been widely applied in the treatment of household, community and industrial wastewater. It has many advantages such as efficient treatment ability, flexibility and area saving compared with traditional technologies. However, the management and technical adjustment during MBBR operation is very important to achieve optimal performance.
MBBR technology has been applied in many important projects around the world, from municipal wastewater treatment to manufacturing plants. From the research and practical application, MBBR technology has proven its efficiency and potential in wastewater treatment, contributing to the protection of our environment and water resources. If you are looking for an experienced unit in the field of water treatment by MBBR technology, contact us Natural Star Vina, providing a comprehensive solution for your project.

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