3% of total current US energy consumption.
Approx. 35% of total electrical energy consumption constituting the single largest operating budget position for most municipalities.
55% consumed for the most part by the blower & aeration system providing oxygen transfer and mixing energy to the biological aerobic digestion / activated sludge process.
Up to 2% of total.
Ambient air and water temperatures influence the oxygen solubility in water [mg/l]
& the oxygen concentration [ppm] in ambient air.
I.e. @ sea level:
Dissolved O2 in water: 9.2 mg/l @ 20o C; 7.4 mg/l @ 30o C
O2 Concentration in ambient air: 20.3 ppm @ 23o C; 19.9 ppm @ 30.5o C
The plant may become oxygen deficient reducing its nutrient removal capacity, effluent water quality will decrease, discharge permits limits potentially will not be met. Solutions: Short term: The OxyPODTM system Long term: Increase system turn down capabilities, OxyProcessTM
Nitrogen and Phosphorus are nutrients that can promote the growth of noxious algae In surface waters that receive treated waste water.