What Means Aeration SOTE in Water Treatment?
In water treatment, SOTE stands for "Standard Oxygen Transfer Efficiency". SOTE is based on the testing standards of the American Society of Civil Engineers and is often used in aeration calculations. We use it to determine how much air is needed to provide the necessary pounds/kilograms of oxygen required for lagoon treatment through aeration.
Generally speaking, the higher the SOTE percentage value, the less air is required. However, its value also varies depending on the aeration equipment and the air flux applied to the diffuser.
How to Test the SOTE in Water Treatment?
The process of determining Standard Oxygen Transfer Efficiency (SOTE) in water treatment involves several steps:
1. Setup: A test setup is prepared, which typically includes an aeration system (such as diffused aeration or mechanical aerators), a water tank or basin, and instruments for measuring oxygen levels.
2. Baseline Measurement: The baseline dissolved oxygen (DO) concentration in the water is measured before aeration begins. This provides a reference point for assessing the oxygen transfer efficiency.
3. Aeration: The aeration system is activated, and the water is aerated for a specific duration at a predetermined rate or setting.
4. Measurement of DO: During and after aeration, the DO concentration in the water is measured at regular intervals using dissolved oxygen meters or sensors.
5. Calculation of SOTE: Use the following formula to calculate:
6. Interpretation: The obtained SOTE value represents the efficiency at which the aeration system transfers oxygen from the air into the water. The higher the value, the better the oxygen transfer efficiency.
7. Adjustments and Optimization: Based on the SOTE results, we can adjust the aeration system or operating parameters to optimize the oxygen transfer efficiency.
8. Repeat Testing: The tests can be repeated under different conditions or with different aeration systems to keep the data accurate.
What Can Aquasust Do for You
Solution Evaluation
Aquasust combines fine bubble diffusers with coarse bubble static tubes in a modular design. Our systems can be designed to fit your plant, including expansion to meet treatment needs, and typically pay for themselves in 12-36 months.
Operational Testing
Aquasust's aeration tests are performed by independent engineers to specifications for diffuser density, immersion, and air flux rate, calibrated to 1000 mg/l TDS. And we maintain a growing library of existing test reports that may be close to the site conditions of your project.
Maintenance and Adjustments
You need to maintain appropriate oxygen levels for biological in wastewater treatment and aquaculture. We help you monitor and optimize the SOTE in water treatment systems, through proper system design and operational adjustments.