Modeling and multi-objective optimization for ANAMMOX process under COD disturbance using hybrid intelligent algorithm.
Anaerobic ammonium oxidation (ANAMMOX) has been regarded as an efficient process to treat nitrogen-containing wastewater. However, the treatment process is not fully understood in terms of reaction mechanisms, process simulation, and control. In this paper, a multi-objective control strategy mixed soft-sensing model (MCSSM) is developed to systematically design the operating variations for multi-objective control by integrating the developed model, a least square support vector machine optimized with principal component analysis (PCA-LSSVM) and non-dominated sorting genetic algorithm-II (NSGA-II). The results revealed that the PCA-LSSVM model is a feasible and efficient tool for predicting the effluent ammonia nitrogen concentration ([Formula: see text]) and the total nitrogen removal concentration (CTN, rem) with determination coefficients (R2) were 0.997 for [Formula: see text] and 0.989 for CTN, rem, and gives us the reasonable solutions in influent by using NSGA-II. To achieve a better removal effect, the influent pH should be kept between 7.50 and 7.52, the COD/TN ratio is suggested to maintain at 0.15 and the NH4+-N/NO2--N ratio is suggested to maintain at 0.61. The developed MCSSM approach and its general modeling framework have a high potential of applicability and guidance to bioprocess in wastewater treatment, and numerical models can be structured for predicting and optimization and experiments can be conducted for data acquisition and model establishment.
['Xie|Bin|B|', 'Ma|Yong-Wen|YW|', 'Wan|Jin-Quan|JQ|', 'Wang|Yan|Y|', 'Yan|Zhi-Cheng|ZC|', 'Liu|Lin|L|', 'Guan|Ze-Yu|ZY|']
D000465:Algorithms D064751:Ammonium Compounds D000693:Anaerobiosis D057919:Biological Oxygen Demand Analysis D019149:Bioreactors D008962:Models, Theoretical D009584:Nitrogen D010084:Oxidation-Reduction D061328:Planctomycetales D060388:Support Vector Machine D062065:Waste Water D018508:Water Purification
Multi-objective optimization ANAMMOX Non-dominated sorting genetic algorithm-II Wastewater treatment Least square support vector machine∙modeling