DO Supplementation: Hydrogen Peroxide or OXIGEN™?
Hydrogen peroxide (H₂O₂) can be added to wastewater to increase dissolved oxygen (DO) and control sulfide-based odor formation. Although H₂O₂ can aid in DO supplementation and odor control, it might not be the most efficient method in doing so.
The use of H₂O₂ is in place of adding oxygen (O₂) to perform these functions, and it takes approximately 2.1 parts of H₂O₂ per part of O₂. Additionally, H₂O₂ is usually sold in a diluted concentration, typically 35%, requiring roughly 6.1 parts of diluted H2O2 per part of O₂. Factoring in an average cost that is almost 7x more than liquid O₂ (LOX) on a weight basis, the overall chemical cost of 37% H₂O₂ comes out to around $4.50 per pound of O₂ equivalence, over 40x more expensive than LOX ($0.11/lb) (Figure 1).
Although 37% H2O2 comes at a premium compared to LOX, the application of dosing it to wastewater is less operationally intensive. Leasing a temporary H₂O₂ metering system comes at a lower cost than monthly equipment rental fees for dosing LOX (Figure 2). To compare the two, a graph of monthly costs is plotted as a function of O₂ demand (Figure 3). The results indicate that if more than 150 pounds per day (PPD) of O₂ are needed monthly, it is more economical to use LOX.
The DRROP™ Pod, paired with Menen’s OXIGEN™ solution, delivers mobile Treatment-as-a-Service (TaaS) for a wide range of treatment processes, including LOX for DO supplementation, removing capital costs and operational and maintenance needs from the user. Use Menen’s savings calculator below to learn how much you could save with DRROP™.