Methodology
Links biological oxygen demand, submerged aeration and blower sizing. Results include oxygen transfer, air demand, diffuser layout, blower performance and energy use.
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Engineering Tool · Wastewater Treatment
OxyMatrix Aeration & Oxygen Transfer Engineering
Evaluate biological oxygen demand, oxygen-transfer performance, diffuser air requirements and blower sizing for preliminary wastewater aeration design.
Calculation mode
1. Biological Process & Oxygen Demands
Carbonaceous demand, nitrification stoichiometry & denitrification credit
Qm³/d
°C
mg/L
Target
mg/L
Biological Screening AssumptionsUse project/site-specific values where available.
g VSS/g BOD₅
Per gram of removed
Factor
mg/L
Target
mg/L
mg/L
By denitrification · oxygen credit
mg/L
PF
Peak oxygen-demand multiplier
mg/L
2. Submerged Physics & Reference Transfer
Diffuser submergence, pressure screening, and standard oxygen requirement
Hm
Hᵈm
fₑ
Effective depth = fraction × basin liquid depth
zm
Above sea level
Depth Slope
%/m
Per metre of diffuser submergence
α
Process-water correction
β
Dissolved-oxygen saturation correction
F
Diffuser fouling allowance
θ
Temperature correction for transfer kinetics
ΔPᵈkPa
ΔPₚkPa
3. Blower Thermodynamics & Sizing
Compression technology, isentropic efficiency, and wire power
Selecting a technology loads its reference screening efficiency into the editable current design fields.
°C
°C
%
Technology Reference82%
Current Design75%
Modified from reference%
Technology reference: 82%
%
Editable design input
%
Editable design input
CAD/kWh
h/yr
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Submerged Aeration Tank — Design Schematic
Submergence, pressure and oxygen-transfer context
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Reference-based preliminary design. Review engineering assumptions and limitations in Derivations.
01
Engineering Basis
Assumptions
- Review the alpha and beta factors, standard oxygen transfer efficiency (SOTE), dissolved oxygen (DO), diffuser submergence and site elevation for the stated process conditions.
Scope / Limitations
- Reference-based preliminary screening and design. Detailed design requires project-specific engineering review and supplier performance data; results do not constitute certification, a vendor guarantee or regulatory approval.
02
Engineering Path
Biological AOR source (choose either)
- Activated Sludge Designer Exports the accepted biological AOR and its process provenance to OxyMatrix.
- BNRMatrix Biological Nutrient Removal Exports the accepted biological AOR and its process provenance to OxyMatrix.
Oxygen transfer design
- OxyMatrix Consumes accepted AOR and owns transfer, airflow, diffuser, blower, and energy calculations.
Downstream support
- Aeration equipment / biological process support Use OxyMatrix results to support aeration equipment selection and downstream biological process design.