The Orangeville Water Pollution Control Plant Expansion and upgrades includes: a new detritor rake mechanism; 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; 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; remove and replace existing RAS and WAS pumps with four VFD controlled combined RAS/WAS pumps.
The project also includes a new electrical control building; replace 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; demolish existing digester building and contents; construct 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 to be replaced; 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, and continuous maintenance of regular flows.