Blackburn Wastewater Treatment Plant Upgrade Study

Section 1.0 - Proj~t Background and Objectives
temperatures in the winter drop to between 0°C and 5"C, and in the summer they can
exceed 20°C.
The lagoon aeration equipment is also reaching the end of its design life. The facility
upgrade will be for a population of 5,000, which is equivalent to a 25 year design
horizon.
1.3 LANSDOWNE ROAD WWTP
The Lansdowne Road wastewater treatment facility was recently upgraded to a Year
2026 design horizon with a contributing population of 115,000 and average dry
weather flow of 44.5 Mud. The current contributing population is less than 90,000.
As a result there is adequate design capacity at the plant should the decision be made
to transfer raw sewage flows fiorn the Blackbum sewerage area to Lansdowne Road
WWTP. All potential impacts of transporting flows to the Lansdowne Road WWTP
would, however, need to be considered in detail during this study to ensure viability of
such an option.
1.4 COLLECTION SYSTEM
Most of the construction work on the sewage collection system for the Blackburn
sewerage area was completed in 1976, and consists of 25 kilometers of both gravity
and forcemain sewers. The pipe network is mostly PVC pipe with some of the larger
diameter pipes being concrete. Soil type in the area is mainly clay in nature with the
pipes laid in sand bedding backfilled with native soils.