Scientifically demonstrated consequences point out that a true designed MBBR Technology with polyethylene media as Biofilm service possess exceptional practicable to be used for OMS elimination from aquaculture wastewater. The shifting mattress Biofilm method can also be used as an best and environment friendly alternative for the whole nutrient elimination from a closed circuit aquaculture or public aquarium waste water treatment.
Moving mattress bioreactor (MBBR) consists of a water tank of any structure crammed with small provider elements. These factors are specifically developed substances with managed density, so they can be fluidized the use of aeration equipment. Biofilms will shape on the components, and these will go with the wastewater in the reactor. The motion in the reactor is generated by using supplying aeration in the diffuser placed at the backside of the reactor. The skinny biofilm on the component permits micro organism to act on the biodegradable elements in the wastewater and minimize the BOD / COD content material in the presence of oxygen in the air for fluidization. The handled water flows via the grid or sieve from the reactor, thereby protecting the MBBR biocarrier in the reactor. The device can be composed of a one-stage or two-stage therapy method in accordance to the particular wants of wastewater.
Sponge-type carriers: Sponge-type MBBR media carriers have high mechanical strength, a excessive unique floor area, and a hard floor texture gold standard for biofilms to take preserve on. Their spongy substances are relatively flexible, although they have a tendency to put on down greater effortlessly than different type
The Ecologix MBBR is a distinctly high-quality organic remedy manner based totally on a aggregate of traditional activated sludge manner and biofilm media. The MBBR method makes use of floating High Capacity MicroOrganism BioChips media inside the aeration and anoxic tanks. The microorganisms eat natural material. The media affords improved floor place for the organic microorganisms to connect and grow. The expanded floor region reduces the footprint of the tanks required to deal with the wastewater. The cure manner can be cardio and/or anaerobic and operates at excessive extent loads.
Aquasust MBBR64 Introduction:
Size:Φ25*4mm Hole Numbers:64
Material: 100% White Virgin HDPE
Weight:125KG/CBM
Densilty:0.96-0.98g/cm 3
Surface Area:>1200m 2 /m 3
Porosity:>85%
Dosing Ratio:15-65%
Membrane-Forming Time:3-15days
Nitrification Efficiency :400-1200gNH 4 N/M 3 .d
BOD 5 Efficiency:2000-10000g BOD 5 /M 3 .d
COD 5 Efficiency:2000-15000 gCOD 5 /M 3 .d
Applicable Temperature:5-60℃
Life-Span:>15year
Description of Moving Bed Biofilm Reactor (MBBR)
There are many kinds of biofilm structures used for water treatment, such as trickling biofilters,rotating organic contactors (RBC), granular media biofilters, floating bead biofilters andfluidized mattress biofilters (Timmons et al., 2002), they all have blessings and disadvantages.The trickling filter is now not volume-effective; mechanical screw ups have regularly been skilled inrotating organic contactors; granular media biofilters want periodic lower back flashing and the fluidized mattress reactors exhibit hydraulic instability (Rusten et al., 2006). In this context, the shifting mattress biofilm reactor (MBBR) science was once developed in the late Nineteen Eighties and early Nineties in Norway (Ødgaard et al., 1999).Now MBBR has been utilized world-widely for the remedy of municipal and industrial wastewaters, as properly as for water cure in aquaculture (Rusten et al., 2006). In the aquaculture industry, MBBR is frequently utilized for nitrification, as properly as the elimination of natural matters. In order to keep away from the heterotrophic micro organism that eat natural count suppressing the nitrifying micro organism at excessive natural loads, MBBR is usually operated at low natural masses in aquaculture structures (Rusten et al., 2006).Compared with most different biofilm reactors, MBBR makes use of the complete tank extent for biomass growth, it additionally has an insignificant head-loss and no want for periodic backwashing and now not inclined to clogging (Rusten et al., 2006). In addition, the filling fraction of biofilm carriers in the reactor can be concern to preferences. However, it is endorsed that filling fractions have to be much less than 70 percent to hold the provider suspended freely in the reactor (Ding, 2012).
How does MBBR Wastewater Treatment work?
MBBR is a technology based on biofilm theory, with an active biofilm growing on specially designed plastic carriers (or biomedia) that are suspended in the reactor. It can be operated both in aerobic and anaerobic conditions, as illustrated in Figure 2.2.1. In aerobic case, the biomedia are kept suspended by agitation from aeration diffusers, while in anaerobic case, a mixer is used to keep the biomedia moving (Ødgaard et al., 1999). Bio-medias are made from different materials and high-density polyethylene is commonly used, which has a density about 0.95g/cm 3 . In order to provide maximum specific surface area (m 2 /m 3 ), bio-medias are designed in various shapes and sizes (Ding, 2012). Figure 2.2.2 shows a commonly used biomedia K1 with specific surface area 350 m 2 /m 3 .The nitrification process in MBBR is influenced by many environmental factors, such as temperature, pH, alkalinity, COD level, the dissolved oxygen (DO) level in the reactor, the total ammonium nitrogen (TAN) level, and the status of the biofilm(Rusten et al., 2006). To evaluate the efficiency of TAN removal in reactor, there are three parameters commomly used (Pfeiffer and Wills, 2011): 1) volume TAN removal rate (g TAN m -3 d -1 ), 2) areal TAN removal rate (g TAN m -2 d -1 ), 3) and percent TAN removal efficiency
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