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Moving Bed Bioreactor

MAK Water’s Moving Bed Bioreactor (MBBR) type packaged sewage treatment plants are designed to treat domestic strength sewage, to achieve “Class C” treated effluent, suitable for reuse in “risk category low” applications or for discharge to environment. With the optional “Class A” upgrade, treated effluent suitable for reuse in “risk category medium” applications is achieved.

The standard treatment process includes influent screening, balance tank mixing, anoxic & aerobic treatment, clarification, effluent sterilization (chlorine tablets) and bag filtration (100 micron). The optional “Class A” upgrade includes an auto-backwashing aseptic glass media filter (5 micron), secondary chlorination via tank recirculation and residual trim hypochlorite dosing, and analyzers for online monitoring of treated effluent turbidity, free chlorine and pH.

MAK Water’s MBBR Bioreactors are constructed of corrosion resistant FRP, and are self-contained, modular systems for easy deployment to remote locations.

The FRP bioreactor tank fits into a 40’ shipping container. This allows it to travel as general purpose cargo on a conventional container vessel, for cost effective shipping anywhere in the world, as well as providing mechanical protection from damage during shipment.

If you have specific requirements, contact us to discuss our custom designed sewage treatment plants or ask about our hire options.


Treatment Capacitym3/day37.5 / 15050 / 20087.5 / 350125 / 500150 / 600
*1 Balance tank volume (recommended)m3180243414604736
*1 Treated effluent tank volume (recommended)m3150200350500600
Sludge tank volume m322.53250
Sludge waste volume (min/max)m3/month3.0 / 12.24.6 / 18.36.8 / 27.49.1 / 36.511.4 / 45.6
*2 Irrigation pump dutym3/hr @ 500 kPa18.82543.862.575
Ambient temperature (min/max)°C1 / 43
Power supply-AC 380~450 V, 3 Phase, 50/60 Hz
Power consumptionClass C (max)kW15.523.530.543.558.5
Class A (max)kW18.526.533.548.563.5
*2 Irrigation pump kW5.57.5111522
FootprintFRP bioreactor(s) & access platforms(s)m12 x 3.212 x 5.612 x 5.612 x 8.812 x 8.8
Containerised plant roomm6 x 2.4*3 N/A6 x 2.4*3 N/A6 x 2.4 


CharacteristicsUnitsInfluent*4 Class C effluent *4 Class A Effluent 
*5pHpH units6.5~8.56.5~8.5
*6Biological oxygen demand (BOD)mg/L*7≤350<20
Suspended solids (TSS)mg/L*7≤350<30<10
Oil & greasemg/L<10-
Total nitrogen (T-N)mg/L<50<40 (or <10 mg/L reduction from influent value)
Total phosphorus (T-P)mg/L<164 ~12 (variable according to coagulant dose rate)
Total dissolved solids (TDS)mg/L<2,000-
TurbidityNTU-N/A<5 (95%ile)
E.Colicfu/100 mL-<1,000<10
Free Chlorinemg/L-0.2~2

*1 Sold separately, *2 Optional equipment, *3 Plant room integral to FRP bioreactor, *4 Based on QLD guidelines, *5 Caustic dosing may be required where influent alkalinity is inadequate, *6 Sucrose dosing may be required where ratio of BOD to TKN is ≤5, *7 Referenced from Metcalf & Eddy (5th edition, 2014), design based on average values of 275 mg/L of BOD and 225 mg/L of TSS; higher design values available on request.


✓= Standard Supply, o = Optional Supply, - = Not Available

Automatic inlet screen (2 mm)
Influent mixing pump
Influent feed pump
FRP bioreactor(s) with aluminium access platform(s) & ladder(s)Aerobic zone with floating media, blower & MLR pump
Clarifier with tube settler & scum removal system
Chlorine contact zone with tablet chlorinator 
Bioreactor roofing (COLORBOND® steel sheeting)ooooo
Plant room with air conditioning, overhead lighting & GPO for maintenance Chemical dosing – coagulant
RAS/WAS pump
Effluent transfer/filter feed (& backwash) pump
Class CBag filter (100 µm)
Class AAuto-backwashing aseptic glass media filter (5 µm)ooooo
Treated effluent tank recirculation pumpooooo
Residual trim hypochlorite dosingooooo
PLC control system with HMI
Sludge tank with supernatant sampling points & discharge valves
Supernatant sump with submersible pump & level controlooooo
Irrigation pump with level control & mechanical flow totaliserooooo
InstrumentationStandard package
Premium package with ClearAccess™ remote monitoringooooo


Instrumentation & ControlsStandard PackagePremium Package
Balance & chlorine contact tank float level switches -
Chemical dosing & sludge tank float level switches
Pressure switches 
Pressure gauges
Class A OnlyAseptic glass media filter pressure transmitter
Treated effluent chlorine & pH analyser
Treated effluent turbidity analyser
Variable speed drivesInfluent feed pump
MLR pump-
Aeration blower-
Balance & chlorine contact tank level transmitters -
Magnetic flow transmitters (influent feed pump & MLR pump)-
Aerobic tank dissolved oxygen analyser-
Aerobic tank pH analyser -
ClearAccess™ remote monitoring & control capabilities-