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Mesocosm-Scale Constructed Wetland Design for Wastewater Treatment
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A new general methodology for incorporating physico-chemical transformations into multi-phase wastewater treatment
I Lizarralde1, T Fernández-Arévalo1, C Brouckaert2
1CEIT and Tecnun (University of Navarra), Manuel de Lardizábal 15, 20018 San Sebastián, Spain.
Water Research
|March 10, 2015
Summary
A new method systematically integrates chemical and physical changes into wastewater treatment models. This plant-wide modeling approach enhances nutrient and phosphorus removal analysis.
Area of Science:
- Environmental Engineering
- Chemical Engineering
- Process Systems Engineering
Background:
- Wastewater treatment models often simplify complex physico-chemical and chemical transformations.
- Integrating these transformations into a plant-wide modeling (PWM) framework is challenging.
- Accurate modeling is crucial for optimizing nutrient removal and resource recovery.
Purpose of the Study:
- To present a general methodology for systematically incorporating physico-chemical and chemical transformations into multi-phase wastewater treatment models.
- To develop a comprehensive plant-wide model for biological and chemical processes.
- To demonstrate the model's utility in studying nutrient removal and phosphorus recovery.
Main Methods:
- Developed a general methodology for integrating transformations and mass transport in multi-phase systems.
- Constructed a mathematical model encompassing biological COD, nitrogen, and phosphorus removal, liquid-gas transfer, precipitation, and chemical reactions.
- Validated the model by comparing simulated and experimental results for a nutrient removal system with sludge digestion.
Main Results:
- The methodology allows for systematic and rigorous incorporation of various transformations.
- The developed mathematical model accurately simulates nutrient removal processes, including biological and chemical aspects.
- Model validation confirmed its capability in representing a complex wastewater treatment system.
Conclusions:
- The proposed plant-wide modeling methodology provides a robust framework for wastewater treatment process simulation.
- The developed mathematical model is a valuable tool for assessing treatment efficiency and exploring phosphorus recovery strategies.
- This approach enhances the understanding and optimization of multi-phase wastewater treatment systems.
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