What is kaldnes k3 Mbbr water treatment technology?
Having covered the basics of biological mbbr wastewater treatment technology, it’s time to shift focus to a specific biological treatment method: moving bed biofilm reactor.
Norwegian researchers developed kaldnes k3 MBBR technology in the late 1980s and early 1990s. The goal of MBBR was to compensate for some of the issues that characterize other biological wastewater treatment methods, and it did so effectively. MBBR combines many of the strengths of biological processes, specifically anactivated sludge process and biofilm media, while eliminating or minimizing the shortcomings that tend to come with biological processes for wastewater treatment.
Because of the many benefits it offers, MBBR has become a popular mode of biological wastewater treatment. MBBR uses plastic carriers covered in biofilm to decompose waste. In addition to being an effective means of removing organic substances, MBBR is also an innovative method for nitrification and denitrification.
As with other biological treatment processes, MBBR is often part of a multi-step system for wastewater treatment, with other processes focused on different aspects of purification. That is why an MBBR process flow diagram will often include other steps, such as grit removal and disinfection. Individual plants can customize the MBBR process itself and their overall wastewater treatment regimen to properly address their purification needs.
How does kaldnes k3 Mbbr water treatment technology
Here is a more detailed breakdown of how the kaldnes k3 Mbbr water treatment technology works. One helpful way to understand this process is to consider the different MBBR design components that work together to make this technique possible.
- Basin: The Mbbr water treatment technology takes place in a basin, also known as a reactor or as an aeration tank. The size of this receptacle depends on the filtration needs of a particular plant. Influent enters this basin for treatment, and may enter a second basin for further MBBR processing or for another type of water treatment process. MBBR aeration tanks are open at the top, exposing the water to the open air, which makes this an aerobic process of filtration.
- Media: The basin is full of thousands of small plastic chips, called media or carriers. These media may occupy as much as 50 to 70% of the tank. Their design maximizes the surface area they provide for biofilm to grow on them. Many carriers resemble rotelle, or wheel-shaped, pasta. They mimic the density of water, allowing them to mix throughout the fluid, rather than floating or sinking.
- Aeration grid: Another thing that helps the media move effectively throughout the tank is an aeration grid. This device is essentially a fan located at the bottom of the reactor tank. The aeration grid helps keep carriers on the move so they can come into contact with all the waste present and efficiently decompose it, and it introduces more oxygen into the tank.
- Sieve: When picturing the MBBR system described thus far, one might wonder how the media stay in the tank, rather than escaping through the exit. That would be a problem if it weren’t for a sieve attached to the tank. The mesh material allows water to pass through, but keeps the plastic carriers inside the basin.
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