0.5 mm on both sides of the carrier is not being exceeded. 1.1 mm of the carrier media, the diffusion depth of approx. This also ensure the substrate can transfer through diffusion into deeper biofilm layers. The MBBR BioChip 30 provides for a high space-time-yield by allowing the bacteria to settle in the protected areas of the chip where they can reproduce. Utilizing the MBBR BioChip 30 carrier media planctomycetes can permanently settle in the protected pore structure of thie carrier and are, as a result, prevented from being flushed out of the reaction system. In other words, the biofilm carrier has to provide a porous and micro-rough surface structure which enables the planctomycetes (bacteria) to permanently attach to the carrier surface.
The surface characteristics of the biofilm carrier must ensure the permanent attached growth of the bacteria. This is the process that takes place during the biological treatment of wastewater and sewage, ammonium nitrogen (NH4+) and nitrite (NO2-) are being symproportioned to molecular nitrogen under anoxic conditions. To illustrate this, we show below its usage in the ANAMMOX process. The MBBR BioChip 30 provides the most stable and reliable process of any comparable carrier media. In this way, the MBBR BioChip 30 allows for constantly high biological removal rates and reliable process stability. Thin biofilms are crucial for an optimal supply of the microorganisms with substrates (removable pollutants and nutrients) as well as with the oxygen required for the aerobic biodegradation processes. Consequently, the biofilms remain thin as they are protected from the shear forces only inside the pores. These shear forces evolve on the outsides of the carrier elements due to their movement in the water, and provide the self-cleaning effect of the MBBR BioChip 30. Its process is very different in that the biofilms, which colonize the pores of the BioChip and which try to grow out of the pores, are kept constantly thin by shear forces. The MBBR BioChip 30 does not have this issue. Problems caused by a decrease in biodegradation efficiency are largely a consequence of an intense thickness of the biofilms, resulting in a reduction of the active carrier surface area. The more the wastewater is polluted with biodegradable pollutants, the more intense and the faster the growth of biomass. The characteristics and quality of the biofilm establishing on the carrier surface is not only influenced by shear forces in the tank but also by the composition and the loads of the pollutants in the wastewater (substrate). In anaerobic treatment processes, the carriers in the reaction tank can be moved properly by pumping water or by using immersed, slowly-rotating mixers. The necessary mixing of the carrier elements in the reactor (reaction tank) can be achieved using the process air supply required in aerobic treatment processes. The MBBR is a complete mix, continuous flow through process which is based on the biofilms principle that combines the benefits of both the activated sludge process and conventional fixed film systems without their disadvantages.Ī crucial factor in the Moving Bed Bio Reactor (MBBR) process is the sufficient and frequent contact between the wastewater components and the microorganisms attached to the carrier (biofilm). In fact the MBBR media or biochips utilized exclusively by Ecologix have an active surface area > 4000 m2/m3 which is up to six (6) times greater than any competing media available on the market today.
When compared to conventional secondary treatment it provides superior efficiency and value. The microorganisms consume organic material. The media is continuously agitated by bubbles from the aeration system that adds oxygen at the bottom of the first compartment of the aeration tank. The increased surface area reduces the footprint of the tanks required to treat the wastewater. The media provides increased surface area for the biological microorganisms to attach to and grow in the aeration tanks. The MBBR process utilizes floating plastic carriers (media) within the aeration tank to increase the amount of microorganisms available to treat the wastewater.
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