Mathematical modeling of biofiltration processes in aquaponic systems

Aquaponic system Biofilter Nitrification Nitrosomonas NitrobacterModern trends in energy saving and sustainable development require agricultural production technologies to implement energy-efficient and environmentally friendly solutions.One of these advanced technologies is aquaponics.This system combines plant cultivation and aquaculture in a closed cycle, where both components interact to ensure the sustainability of the system.In this context, it is important to highlight the biofilter as a key element that ensures the efficient operation of the entire aquaponic system.The biofilter plays a critical role in an aquaponics system because it is where toxic waste products such as ammonia and nitrites, excreted by fish, are converted into nutrients that plants need to grow.By doing this, the biofilter helps maintain balance in the system, keeping the aquatic medium safe for fish while providing essential nutrients to the plants.The analysis of the mathematical model of the biofilter was carried out, the main dependencies were expressed.They were the total concentration of nitrates, the total concentration of nitrites and ammonia.During the modeling process, the results of the dynamics of changes in key parameters were obtained.Modeling of the biofilter using the MatLab Simulink software made it possible to obtain the results of processes in the biofilter: the dynamics of the concentration of Nitrosomonas and Nitrobacter bacteria, the dynamics of the concentration of nitrates, which is a decisive factor.Based on the simulation results, conclusions were made about the further strategy for managing the key parameters of the biofilter, which will ensure the stability of the entire system.The results obtained can be used to adjust the parameters in industrial aquaponic complexes, contributing to more efficient use of resources and reducing the costs of additional water purification.