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Napier-Reid Ltd. 
10 Alden Road, Unit 2,
Markham, Ontario L3R2S1,
Tel: (905) 475 1545
Fax: (905) 475 2021
Home > Projects> Morley, Alberta, Canada, Bio-Batch(TM) SBR System 

Morley, Alberta, Canada, Bio-Batch(TM) SBR System

Project Summary:

Project Type:

Design, Build and Service

Project Category:

Municipal Wastewater Treatment

Project Purpose:

to remove BOD, TSS,ammonia and phosphorus
Design Flow: 375 Cubic Metres/day
Year of completion: 2009

Full Description:
Untitled Page


Napier-Reid Ltd. supplied a waste water treatment plant comprising of two SBR trains to treat domestic sewage.

Performance Data:

Average Flow: 375m3/day
Peak Flow: 430m3/day


Effluent (specified)

BOD5 (mg/L)



TSS (mg/L)



TKN (mg/L)









The Treatment Process

Raw waste water is delivered by an inflow pipe to two SBR tanks, where it is aerated using membrane fine bubble  diffusers to assure  proper oxygen supply for removal of BOD and completion of nitrification. The Bio-Batch process consists of sequence of operations which are carried out through alternating React, Settle and Decant sequences within a single tank.

During the react period, air-off sub-sequences are incorporated to provide anoxic conditions within the SBR tank. Mixers will be in operation during this period. The duration of air-off sub-sequences can be adjusted between 0 to 30 minutes.

In the settle phase, the quiescent conditions are provided for the sludge to settle to the bottom of the tank. The clear water is taken out of the basin under laminar flow conditions by a motor driven decanter without disturbing the settled sludge layer. The decanter travel time from the rest position to the Bottom Water Level (BWL) is preset to maintain constant flow. Excessive amount of sludge is removed by a submersible pump directly after the settle sequence. Part of phosphorus is removed during biological treatment; while some is further reduced by chemical addition through alum feed system.

The cycles and sequences are automatically controlled by process control center.

SBR, Morley
Scope of Supply

  • SBR trains (2)
  • Flow meter
  • UV Disinfection System
  • Aerobic Sludge Digester (1)
  • Blower Assemblies (3)
  • Control Panel EEMAC12 (1)

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