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Activated Sludge Bioreactor

MAK Water’s Activated Sludge Bioreactor (ASBR) 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 filter (25 micron), secondary chlorination via tank recirculation and residual trim hypochlorite dosing, and analysers for online monitoring of treated effluent turbidity, free chlorine and pH.

MAK Water’s ASBR 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.

STANDARD SPECIFICATIONS

Parameter Units ASBR-030 ASBR-050 ASBR-075 ASBR-100 ASBR-125
Treatment capacity (min/max) m3/day 7.5 / 30 12.5 / 50 18.5 / 75 25 / 100 30 / 125
*1Balance tank volume (recommended) m3 35 62.5 87.5 115 140
*1Treated effluent tank volume (recommended) m3 20 33.5 50 66.7 83.3
Sludge tank volume m3 9 13.5 22.5 32
Sludge waste volume (min/max) m3/month 0.9 / 3.65 1.1 / 4.5 1.7 / 6.7 3.0 / 12.2 3.8 / 5.2
*2Irrigation pump duty m3/hr @ 500 kPa 3.75 6.25 9.38 12.5 15.63
Ambient temperature (min/max) °C 1 ~ 35 (1 ~ 43 with optional plant room air-conditioner)
Power supply - AC 380~450 V, 3 Phase, 50/60 Hz
Power consumption Class C (max) kW 6.7 8.4 10.9 18 25.5
Class A (max) kW 8.3 10 12.5 19.6 27.1
*2Irrigation pump kW 1.5 2.2 2.2 4.0 5.5
*2Air conditioner kW 1.5 1.5 1.5 1.5 1.5
Footprint FRP bioreactor m / ft 6 x 2.4 / 20 x 8 7.5 x 2.4 / 25 x 8 9 x 2.4 / 30 x 8 12 x 2.4 / 40 x 8 12 x 2.4 / 40 x 8
Containerised plant room m / ft N/A (plant room integral to FRP bioreactor) 3 x 2.4 / 10 x 8

 

Characteristics Units Influent *3Class C Effluent *3Class A Effluent
Temperature °C 15~45 -
pH pH units 6.5~8.5 6.5~8.5
Biological oxygen demand (BOD) mg/L 150~400 <20
Suspended solids (TSS) mg/L 150~300 <30
Oil & grease mg/L <10 -
Total nitrogen (T-N) mg/L <50 <40 (or 10 mg/L reduction from influent value)
Total phosphorus (T-P) mg/L <16 4~12 (variable according to coagulant dose rate)
Total dissolved solids (TDS) mg/L <2,000 -
Turbidity NTU - N/A <5 (95%ile)
E.Coli cfu/100 mL - <1,000 <10
Free chlorine mg/L - 0.2~2

*1 Sold Separately *2 Operational Equipment *3 Based on QLD Guidelines

STANDARD INCLUSIONS + OPTIONS

✓= Standard Supply, o = Optional Supply

Equipment ASBR-030 ASBR-050 ASBR-075 ASBR-100 ASBR-125
Automatic inlet screen (2 mm)
Influent mixing pump
Influent feed pump
FRP bioreactor with aluminium access platform & ladder Aerobic zone with submersible aerator & MLR pump
Clarifier with scum removal system
Chlorine contact zone with tablet chlorinator
Bioreactor roofing (COLORBOND® steel sheeting) o o o o o
Plant room with overhead lighting and GPO for maintenance Chemical dosing – coagulant
RAS/WAS pump
Effluent transfer/filter feed pump
Class C Bag filter (100 µm)
Class A Auto-backwashing filter (25 µm) o o o o o
Treated effluent tank recirculation pump o o o o o
Residual trim hypochlorite dosing o o o o o
PLC control system with HMI
Plant room air conditioner o o o o o
Sludge tank with supernatant sampling points and discharge valves
Supernatant sump with submersible pump and level control o o o o o
Irrigation pump with level control and mechanical flow totaliser o o o o o
Instrumentation Standard package
Premium package with ClearAccessremote monitoring o o o o o

 

Instrumentation & Controls Standard Package Premium Package
Balance & chlorine contact tank float level switches -
Chemical dosing & sludge tank float level switches
Pressure switches
Pressure gauges
Class A only Treated effluent chlorine & pH analyser
Treated effluent turbidity analyser
Variable speed drives Influent feed pump
MLR pump
Submersible aerator -
Balance & chlorine contact tank level transmitters -
Magnetic flow transmitters (influent feed pump and MLR pump) -
Aerobic tank dissolved oxygen analyser -
Aerobic tank pH analyser -
ClearAccess™ remote monitoring & control capabilities -

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