Orangeville Water Pollution Control Plant Expansion

The Orangeville Water Pollution Control Plant Expansion and upgrades included:

• A new detri­tor rake mechanism
• An additional bioreactor
• New mechanical mixers in the first aerobic zone of bioreactor No.’s 4 and 5
• Replacement of all existing mixed liquor return pumps (new and old plants)
• Replacement of existing blowers (new and old plants) with new blowers
• An additional square clarifier
• New scum hopper for clarifier No. 2 along with replacement of the scum pump and piping and addition of a second scum pump
• Replacement of mechanisms and control panels for clarifiers No. 1 and 2
• Removal and replacement of existing RAS and WAS pumps with four VFD controlled combined RAS/WAS pumps.

The project also included:

• A new electrical control building
• Replacing existing alum feed pumps with 6 new pumps and heat traced discharge piping; construct a new single media shallow bed, au­tomatic backwash filter and building
• Demolishing existing digester building and contents
• Constructing a new boiler building with new boiler equipment dedicated solely to the digester
• Complete re­furbishment of filter No. 1 components
• Sand media in filter No. 2 replacement
• New larger capacity VFD controlled pumps
• New centrate holding tank and pumping system
• New effluent wash water pumping system and new related underground piping
• New 650kW diesel generator
• New electrical substation and associated distribution equipment
• Replacement of various MCCs with new MCCs and various electrical upgrades
• Upgrades to ventilation systems and electrical equipment
• Various flood proofing improvements to the older structures in the plant
• Related mechanical process piping and control devices
• Yard piping ranging in pipe sizes from 50 to 900 mm dia.,
• Related shoring and dewatering systems
• Temporary traffic control lighting when work is on-going on Townline right of-way
• Continuous maintenance of regular flows.