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MBBR filler is a new type of bioactive carrier. It adopts scientific formula, according to different water quality needs, fusing different kinds of microelements in polymer materials that are conducive to the rapid growth of microorganisms into attachment. The structure of hollow filler is a total of three layers of hollow circles inside and outside, each circle has one prong inside and 36 prongs outside, with a special structure, and the filler is suspended in water during normal operation. The anaerobic bacteria grow inside the filler to produce denitrification; aerobic bacteria grow outside to remove organic matter, and there is both nitrification and denitrification process in the whole treatment process.
Mobile bed biofilm reactor(MBBR) is an effecient biofilm technology,which combines the advantages of traditional fluidized bed.The MBBR process adds a certain amount of suspended filler(biofilm carrier)to the reactor,and in the protected area of the filler,different microorganisms(from bacteria to ciliates to rotifers)concentrate on the biofilm.Some anaerobic or aerobic bacteria are grown inside the carrier,while aerobic bacteria are grown outside. Each carrier is a micro-reactor,which ensures extensive and frequent contact between waste water and biofilms on the carrier,either through blast aeration in the aerobic treatment system or stirring in the anaerobic treatment system. While improving the mass transfer efficiency of the system,the renewal of biofilm microorganisms should be strengthened to maintain and improve the activity of biofilm. The suspended carrier and the original activated sludge form a more complex ecosystem and the biofilm attached to the carrier greatly increases the active biomass in the reactor. Under the joint action of suspended activated sludge and biofilm on the surface of suspended carrier,the impact load resistance capacity of the system is greatly improved, so as to improve the effeciency of sewage treatment and stabilize the effluent quality.
