Blackburn Wastewater Treatment Plant Upgrade Study

Section 4.0 - Blackbm Treatment Options
Key technical issues associated with this option are as follows:
Extent to which the I/I reduction program is able to reduce peak wet
weather flows must be evaluated.
City must maintain operation of Blackbum WWTP; O&M costs associated
with lagoon operation will not be significantly lower that for current
operation.
Expansion of the existing lagoons will not be required.
Ammonia toxicity of lagoon emuent needs to be addressed.
Major capital works required to transfer and proportion flows to
Lansdowne Road WWTP and to Blackburn WWTP.
Condition and capacity of the existing Mackus Road pumpstation must be
evaluated.
Details for pipeline routes for transferring Blackbum sewage flows to
Lansdowne Road WWTP must be evaluated, as well as, pumping of wet
weather flows to Blackburn WWTP.
Ammonia toxicity issue partialIy addressed at Lansdowne Road WWTP for
2*ADWF
4.4.2 Design Information
Population
ADWF, m3/d
PWWF, m3/d
Pipework
Forcemain fiom intersection of Mackus Road and North
Blackbum Road to a high point on Hwy. 16
Diameter, mm 200
Length, m 1,720
Gravity sewermain fiom the end of 200 diameter forcemain to
the Regional Correctional Centre tie-in
Diameter, mm 300
Length, m 3,100
Sanitary sewer syphon from Yellowhead Bridge connecting to
downtown sewage collection system
Diameter, mrn 200
Length, m 100