Oxygen Equivalent Given Log Value Of Critical Oxygen Deficit Calculator

Formula Used:

\[ Lt = f \times 10^{\log_{10}(Dc) + (KD \times tc)} \]

Self-Purification Constant (f):

Critical Oxygen Deficit (Dc):

kg/m³

Deoxygenation Constant (KD):

1/s

Critical Time (tc):

Oxygen Equivalent (Lt):

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1. What is Oxygen Equivalent?

Oxygen Equivalent refers to the oxidizable organic matter present in sewage. It represents the amount of oxygen required to oxidize the organic matter in wastewater.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Lt = f \times 10^{\log_{10}(Dc) + (KD \times tc)} \]

Where:

\( Lt \) — Oxygen Equivalent (kg/m³)
\( f \) — Self-Purification Constant
\( Dc \) — Critical Oxygen Deficit (kg/m³)
\( KD \) — Deoxygenation Constant (1/s)
\( tc \) — Critical Time (s)

Explanation: This formula calculates the oxygen equivalent by considering the self-purification constant, critical oxygen deficit, deoxygenation rate, and critical time period.

3. Importance of Oxygen Equivalent Calculation

Details: Calculating oxygen equivalent is crucial for wastewater treatment design, assessing water quality, and determining the oxygen demand of organic matter in sewage systems.

4. Using the Calculator

Tips: Enter all values with appropriate units. Self-Purification Constant and Critical Oxygen Deficit should be positive values. Deoxygenation Constant and Critical Time must be greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is Self-Purification Constant?
A: Self-Purification Constant is the ratio of reoxygenation constant to deoxygenation constant, representing the natural purification capacity of water bodies.

Q2: What is Critical Oxygen Deficit?
A: Critical Oxygen Deficit occurs when the deoxygenation rate exceeds the reoxygenation rate, representing the maximum oxygen deficiency in water.

Q3: How is Deoxygenation Constant determined?
A: Deoxygenation Constant is obtained through laboratory tests measuring the rate of oxygen consumption during organic matter decomposition.

Q4: What does Critical Time represent?
A: Critical Time refers to the time period when the minimum dissolved oxygen concentration occurs in water bodies.

Q5: Why is this calculation important for environmental engineering?
A: This calculation helps in designing effective wastewater treatment systems and assessing the impact of organic pollution on aquatic ecosystems.