Related Experiment Video
Updated: Jul 1, 2026
08:17
Coupling Carbon Capture from a Power Plant with Semi-automated Open Raceway Ponds for Microalgae Cultivation
Published on: August 14, 2020
Reducing operating costs for struvite formation with a carbon dioxide stripper
K P Fattah1, N Sabrina, D S Mavinic
1Department of Civil Engineering, University of British Columbia, Vancouver, BC, Canada V6T 1Z4. parvez@interchange.ubc.ca
Summary
This study shows that CO(2) stripping can significantly reduce caustic chemical use in struvite phosphorus recovery by increasing water pH. The cascade stripper effectively cut costs by 35-86% while maintaining high phosphorus removal.
Area of Science:
- Environmental Engineering
- Water Treatment Technologies
- Nutrient Recovery
Background:
- High operational costs of struvite phosphorus recovery are linked to caustic chemical usage for pH control.
- Wastewater treatment plants aim to optimize nutrient recovery processes for economic viability.
Purpose of the Study:
- To evaluate the effectiveness of CO(2) stripping in reducing caustic chemical demand for struvite production.
- To assess the impact of a cascade stripper on operational costs and nutrient removal efficiency.
Main Methods:
- A cascade stripper was tested at the Lulu Island Wastewater Treatment Plant (LIWWTP).
- The stripper's performance was evaluated under various operating conditions to optimize pH control and chemical reduction.
- Phosphorus and ammonia removal efficiencies were monitored.
Main Results:
- The cascade stripper significantly reduced caustic chemical usage by 35% to 86%.
- High phosphorus removal (90%) was consistently achieved across all tested conditions.
- The stripper demonstrated limited effectiveness in ammonia stripping.
Conclusions:
- CO(2) stripping is a viable method for reducing operational costs in struvite phosphorus recovery.
- The cascade stripper technology offers substantial savings in chemical inputs for wastewater treatment.
- Further optimization may be needed for enhanced ammonia stripping performance.
More Related Videos
Related Concept Videos
01:09Turbulent Flow: Problem Solving
Carbonation is a process used to dissolve carbon dioxide gas in a liquid, commonly used in the production of carbonated beverages. Achieving efficient carbonation requires careful control of temperature, pressure, and flow conditions. By adjusting these parameters, carbonation efficiency can be maximized, producing a higher concentration of CO2 in the liquid.
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures enhance...
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures enhance...
01:27Production of Alcohol
Continuous fermentation is a key strategy in industrial ethanol production, particularly when efficiency, scalability, and high yields are essential. This approach allows for uninterrupted operation and optimized resource utilization. The primary feedstock, corn starch, undergoes enzymatic hydrolysis facilitated by α-amylase and glucoamylase. These enzymes break down the starch into fermentable sugars such as glucose, which are readily assimilated by fermentative microorganisms.Fermentation...
04:01Factors Affecting Solubility
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide: