Section 6.31 TR Tank Reactor

Mechanical surface aeration, including aerator, motor, drive and supports. FOB cost 190000 at drive power = 75 kW with n = 0.55 for the range 0.75-75 and n = 1.00 for the range 75-3700. L+M = 1.48. 

Conventional activated sludge process including basin, aeration system, recycle pumping and secondary clarifier. PM cost 8150 000 for design flow rate = 120 L/s with n = 0.71 for the range 0.5-4400 L/s. 

Contact stabilization package paint including pumps, aeration basin, air system and secondary clarifier. PM cost 1360000 at design feed rate = 11.5 L/s with n = 0.46 for the range 4.4-90. (L+M = 1.78). 

Oxidation ditch including concrete basin, aeration equipment and secondary clarifier, installed. PM cost 2 450 000 at design flow rate = 46 L/s with n = 0.44 for the range 2.2-46 and n = 0.76 for the range 46-440 L/s. 

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