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 - Blackbum <strong>Treatment</strong> Options<br />
Extended Aeration <strong>Plant</strong><br />
Sitework<br />
Excavation, preparation, backfill, etc., LS<br />
Structural<br />
Headworks/blower bldg./sludge vault, LS<br />
Bioreactor, LS<br />
Clarifiers, LS<br />
Equipment<br />
Headworkshlower bldg.lsludge vault, LS<br />
Bioreactor, LS<br />
Clarifiers, LS<br />
Mechanical<br />
Headworkslblower bldg.ls1udge vault, LS<br />
Bioreactor, LS<br />
Clarifiers,LS<br />
ElectricallInstrumentation<br />
Headworkdblower bldg./sludge vault, LS<br />
Bioreactor, LS<br />
Clarifiers, LS<br />
MisceUaneous, LS<br />
Pumpstation<br />
Makus Road PS, LS<br />
Subtotal<br />
Contingencies (15 percent)<br />
EngineeringtAdministration (20 percent)<br />
GST (3 percent)<br />
Total<br />
When compared to the conventional activated sludge option, the incorporation<br />
of nitrification into the process design increases the capital cost of this option<br />
by over $0.5 M, or approximately 35 percent.<br />
4.8 LIFE CYCLE COST ANALYSIS<br />
Seven basic options were identified in the previous sections as being<br />
appropriate for evaluation. Two of the options, Options 6 and 7, are based on<br />
maintaining full secondary treatment at the Blackbum WWTP site. These two<br />
options have been further subdivided into Options 6a and 6b, and 7a and 7b,<br />
respectively, to address the issue of ammonia toxicity removal. Conceptual<br />
level costing has been developed for each of the options as well as detailed
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