Công nghệ
5500 m2/m3 – the largest active surface area in the industry.
Performance
The MBBR BioChip 30 is a high performance MBBR carrier that provides a protected active surface area of 5500 m2/m3 for the immobilization of microorganisms which are in charge of the different biological water treatment processes. This active surface area has been scientifically certified and compares to a range of 500 m2/m3 - 800 m2/m3 provided by competitive solutions. Its application is characterized by extremely high removal rates and reliable process stability. Our BioChips provide removal rates up to 10 times higher than conventional media carriers (in all their various forms). This is achieved through a high-quality pore system as shown under magnification to the right.
Features & Advantages
• Protected active surface 5500 m2/m3
• Highest removal rates in the industry
• Cost savings per m2 of protected active surface area
• Extremely stable processes (even with fluctuation in process conditions)
• Manufactured from high quality PE material (virgin) free form carcinogenic plasticizers
• Optimal pore system and structure
• Allows for smaller MBBR system volume
• Simple operation
• Thin, controlled biofilms
• Optimal diffusion of 02 and substrate
• Easy upgrading or retrofitting of existing plants
• Large diameter (30 mm / 1")
• Long life abrasion resistant material
• Self-cleaning
• Non-clogging
• Mature 20+ year proven technology
Applications & Industries
• Denitrification
• Nitrification
• COD removal
• Anaerobic ammonium oxidation (ANAMMOX) process
• IFAS
• Pulp & paper industry
• Food & beverage industry
• Slaughterhouses
• Chemical effluent treatment, textile factories
• Fish-farming, aquaculture, koi carp ponds, swimming ponds
Physical Characteristics
The MBBR BioChip 30 biofilm carrier is completely free from any phthalates or other plasticizers and does not contain bisphenol A or any other aromatic compounds. It is made of virgin polyethylene (no recycled PE), inorganic fillers, tiny amounts of monoester of glyceric acid (made from coconut fat), citric acid and soda (Na2CO3).
The manufacturing process becomes extremely important when used with applications sensitive to additional harmful chemicals such as aquaculture. Bishpenol A and phthalates have bene known to cause cancer and have hormonal effects.
The parabolic shape of the BioChip 30 allows for a homogenous mixing of the Chips in the tank as well as for the active biofilm being optimally kept in the water flow. Hence, the supply of the microorganisms with substrate and oxygen is ensured at any time and at any load condition.
Process
A 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). 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. 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 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). The more the wastewater is polluted with biodegradable pollutants, the more intense and the faster the growth of biomass.
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 MBBR BioChip 30 does not have this issue. 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. 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 25. Consequently, the biofilms remain thin as they are protected from the shear forces only inside the pores. 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. In this way, the MBBR BioChip 30 allows for constantly high biological removal rates and reliable process stability.
BioChip comparison
Competitor "conventional" clogged carrier
MBBR BioChip 30 – no clogging due to biofilm only being
present inside the BioChip pores.
The carrier media has been specifically developed for the biodegradation of carbon and the elimination of nitrogen in industrial as well as in municipal wastewater treatment plants and, due its specific characteristics, can be used equally for aerobic, anaerobic and anoxic processes. The results are extremely high removal rates in denitrification, nitrification and COD elimination process.
Cross section of an MBBR BioChip 30
Pore system of the MBBR BioChip 30, ensuring durably thin biofilms for
optimal diffusion of substrate, oxygen and nutrients
ANaerobic AMMonium OXidation Process (ANAMMOX)
The MBBR BioChip 30 provides the most stable and reliable process of any comparable carrier media. To illustrate this, we show below its usage in the ANAMMOX process. 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.
The surface characteristics of the biofilm carrier must ensure the permanent attached growth of the bacteria. 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. 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.
MBBR BioChip 30 colonized with ANAMMOX bacteria
Active biomass growing in the pore system
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. This also ensure the substrate can transfer through diffusion into deeper biofilm layers. Due to the material thickness of approx. 1.1 mm of the carrier media, the diffusion depth of approx. 0.5 mm on both sides of the carrier is not being exceeded. This fully meets the requirements of an optimal habitat in the form of a special pore system having a depth of approx. 0.5 mm on or in the MBBR BioChip 30, respectively.
Typical ANAMMOX Application
Municipal or domestic sewage treatment plants operate with a high ammonium nitrogen load (NH4-N) coming from their sludge treatment process. This partial flow is usually re-supplied to the biological main flow process where it causes energy consumption due to the process air flow on the one hand and BOD consumption on the other (carbon source required for the de-nitrification process). Under optimal conditions, it is however possible to treat this filtrate flow by means of ANAMMOX process and hence to relieve the treatment plant energetically and hydraulically.
Cost Savings
The MBBR BioChip 30 offers a price-to-surface area ratio which is more favorable than many other carrier types. To properly evaluate offers for carrier media you need to compare prices of different media not per m3 but per m2 since each media has a different m2/m3 ratio. The protected active surface area (in 2/m3) and not solely the volume (in m3) of carrier media is what is needed to make an accurate cost comparison.
Energy Savings
The special shape and specific gravity of the colonized MBBR BioChip 30 provide unique motion characteristics which require less agitation energy in the form of process air supply in order to keep the carrier suspended in the wastewater. By using the MBBR BioChip 30 Wastewater treatment operators will benefit from significant savings in operational expenditure.
Longevity / Wear
Each MBBR BioChip 30 media has a very low mass compared to its size. Consequently, the impulse transferred when contact is made with another carrier element is insignificant thus drastically reducing abrasion and wear. Other tubular carrier types (often injection-molded and heavy related to their size) conversely break after a certain time in operation leaving carrier parts on the water surface in the clarifiers of wastewater treatment plants.
Examples of these poorly designed carriers are shown below
