Blackburn Wastewater Treatment Plant Upgrade Study

Section 4.0 - Blackbum Treatment Options
* The City must maintain the Blackbum WWTP; O&M costs associated with
expanded lagoon operation will be higher than for current operation.
Additional land area must be identified if further expansion is
contemplated.
Ammonia toxicity of the lagoon effluent needs to be addressed.
Incorporation of a tertiary nitrification stage will significantly increase the
capital and O&M costs of the facility.
The issue of whether nitrification can reliably be achieved in an add-on
RBC process at temperatures below P C needs further investigation.
No transfer of flows and loads, or ammonia toxicity issue to Lansdowne
Road WWTP.
Existing excess capacity at the Lansdowne Road WWTP would not be
utilized.
Condition and capacity of the existing Mackus Road pumpstation must be
evaluated.
4.6.2 Design Information
Population
ADWF, m3/d
P W , m3/d
Stage 1 (existing)
Lagoon l (primary)
Number
Volume, m3
FRT (@ ADWF = 900 m3/d), d
Lagoon 2 (secondary)
Number
Volume, m3
HRT (@ ADWF = 900 m3/d), d
Aeration Blowers
Number
Power, hp
Stage 2 (expanded)
Lagoon 1MlB (primary)
Number
Volume, in3