Oxygen Equivalent Given Critical Time In Self Purification Factor Calculator

Formula Used:

\[ Lt = Dc \times (f-1) / (1-((10^{(tc \times KD \times (f-1))})/f)) \]

Critical Oxygen Deficit (Dc):

kg/m³

Self-Purification Constant (f):

Critical Time (tc):

seconds

Deoxygenation Constant (KD):

1/s

Oxygen Equivalent (Lt):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is Oxygen Equivalent?

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

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Lt = Dc \times (f-1) / (1-((10^{(tc \times KD \times (f-1))})/f)) \]

Where:

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

Explanation: This formula calculates the oxygen equivalent based on the critical oxygen deficit, self-purification constant, critical time, and deoxygenation constant in water purification processes.

3. Importance of Oxygen Equivalent Calculation

Details: Calculating oxygen equivalent is crucial for assessing the organic pollution load in wastewater, designing treatment systems, and evaluating the efficiency of self-purification processes in natural water bodies.

4. Using the Calculator

Tips: Enter Critical Oxygen Deficit in kg/m³, Self-Purification Constant (dimensionless), Critical Time in seconds, and Deoxygenation Constant in 1/s. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is Critical Oxygen Deficit?
A: Critical Oxygen Deficit refers to the condition where the deoxygenation rate exceeds the reoxygenation rate in a water body.

Q2: What does Self-Purification Constant represent?
A: Self-Purification Constant is the ratio of reoxygenation constant to deoxygenation constant, indicating the self-cleaning capacity of a water body.

Q3: How is Critical Time determined?
A: Critical Time refers to the time when the minimum dissolved oxygen concentration occurs, found by differentiating the dissolved oxygen equation with respect to time.

Q4: What is Deoxygenation Constant?
A: Deoxygenation Constant is the value obtained after decomposing of oxygen in sewage, representing the rate of oxygen consumption.

Q5: What are typical values for these parameters?
A: Values vary depending on water temperature, organic load, and environmental conditions. Professional water quality assessment is recommended for accurate parameter determination.