Saturated Dissolved Oxygen Formula:
From: | To: |
Definition: Saturated Dissolved Oxygen refers to the maximum concentration of oxygen that water can hold at a given temperature, pressure, and salinity.
Purpose: It's a critical parameter in water quality assessment and aquatic ecosystem studies.
The calculator uses the formula:
Where:
Explanation: The oxygen deficit is added to the actual dissolved oxygen to determine the saturated dissolved oxygen level.
Details: Measuring SDO helps in understanding water quality, assessing aquatic habitat suitability, and monitoring wastewater treatment processes.
Tips: Enter the oxygen deficit and actual dissolved oxygen values in kg/m³. Both values must be ≥ 0.
Q1: What is oxygen deficit in water?
A: Oxygen deficit is the difference between the saturated dissolved oxygen and the actual dissolved oxygen in water.
Q2: What factors affect saturated dissolved oxygen?
A: Temperature, salinity, atmospheric pressure, and water movement all affect SDO levels.
Q3: Why is SDO important for aquatic life?
A: Most aquatic organisms require oxygen for respiration, and SDO levels indicate how much oxygen is available.
Q4: What are typical SDO values in natural waters?
A: In freshwater at 20°C, SDO is typically around 0.009 kg/m³ (9 mg/L), but this decreases with higher temperatures and salinity.
Q5: How is actual dissolved oxygen measured?
A: ADO can be measured using Winkler titration, electrochemical probes, or optical sensors.