Air Blower Sizing Calculator

Get a free, instant estimate of the air blower capacity and pressure your STP or ETP aeration tank needs — based on the same method our engineers use.

Plant Capacity (KLD)

Inlet BOD (mg/L)

Target Outlet BOD (mg/L)

Diffuser Submergence Depth (m)

Estimated BOD removed —

Estimated oxygen demand —

Recommended airflow (with 20% margin) —

Estimated discharge pressure —

This is a planning-stage estimate using standard extended aeration / MBBR assumptions (1.2 kg O&sub2;/kg BOD removed, 12 m³ air/kg O&sub2;, diffuser + piping losses of ~0.25 kg/cm²). Actual requirements depend on diffuser type, temperature, altitude, and process design — always confirm with a proper engineering review before purchase.

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