Blackburn Wastewater Treatment Plant Upgrade Study
Blackburn Wastewater Treatment Plant Upgrade Study
Blackburn Wastewater Treatment Plant Upgrade Study
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SECTION 4.0<br />
BLACKBURN TREATMENT OPTIONS<br />
The following seven options have been identified for upgrading the <strong>Blackburn</strong><br />
sewage collection area and WWTP:<br />
4.1 OPTION 1 - DECOMMISSION EXISTING BLACKBURN WWTP AND<br />
ROUTE ALL FLOW TO LANSDOWNE ROAD WWTP MA<br />
FORCEMAINlGRAVITY SEWER CONNECTION<br />
4.1.1 Outline<br />
In this option the existing sewage lagoons would be decommissioned and all<br />
flows transferred for treatment at the Lansdowne Road WWTP via a new<br />
forcemain and trunk gravity sewer from the Mackus Road pumpstation. A<br />
schematic representation of this option is presented in Figure 4.1. An I/l<br />
reduction program is to be initiated and completed to reduce the volume of<br />
wastewater being transferred during wet weather and snowrnelt conditions.<br />
The existing Mackus Road pumpstation would be upgraded and a new , small<br />
purnpstation would be constructed at the Blackbum WWTP site. It is believed<br />
that he hdowne Road WWTP has sufficient capacity to handle the<br />
projected future hydraulic and BODOSS Ioadings from the Blackbum sewage<br />
collection area.<br />
Key activities or capital works associated with this option are as follows:<br />
Implement and complete I/I reduction program.<br />
Decommission lagoons and rehabilitate site for other use.<br />
<strong>Upgrade</strong> Mackus Road pumpstation to handle projected increased flows.<br />
Construct trunk gravity sewer and/or forcemain to transfer all flows from<br />
Blackbum sewerage area to Lansdowne Road WWTP.<br />
<strong>Upgrade</strong> downtown sewage collection pipework to handle increased flows<br />
from Blackbum sewerage area.<br />
Construct sewage purnpstation at <strong>Blackburn</strong> WWTP site and construct<br />
connecting forcemain discharging to Mackus Road pumpstation.