1. What is Aeration Flow Calculation?

The aeration flow calculation determines the required air flow rate for wastewater treatment based on the biological oxygen demand (BOD) load and the specific aeration rate needed for treatment.

2. How Does the Calculator Work?

The calculator uses the aeration flow equation:

Where:

• \( Air\_flow \) — Required air flow rate (m³/h)
• \( BOD\_load \) — Biological oxygen demand load (kg/day)
• \( aeration\_rate \) — Specific aeration rate (m³/kg BOD)

Explanation: The equation calculates the volume of air needed to treat the organic load in wastewater based on standard aeration requirements.

3. Importance of Aeration Flow Calculation

Details: Proper aeration is essential for effective wastewater treatment. Accurate air flow calculation ensures sufficient oxygen supply for microbial activity while optimizing energy consumption.

4. Using the Calculator

Tips: Enter BOD load in kg/day and aeration rate in m³/kg BOD. Both values must be positive numbers for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What factors affect aeration rate?
A: Aeration rate depends on wastewater characteristics, treatment objectives, and system design. Typical values range from 30-90 m³ air/kg BOD.

Q2: How is BOD load determined?
A: BOD load is calculated by multiplying the wastewater flow rate by the BOD concentration.

Q3: What's the typical air flow range for wastewater treatment?
A: For conventional activated sludge systems, air flow typically ranges from 0.5-2.0 m³ air/m³ wastewater.

Q4: Does temperature affect aeration requirements?
A: Yes, colder water holds more oxygen, but microbial activity may be slower. Temperature corrections may be needed for precise calculations.

Q5: How does this relate to blower sizing?
A: The calculated air flow helps determine blower capacity requirements, though additional factors like pressure and efficiency must be considered.