利用状态观测器对废水处理工艺进行动态多目标优化

IF 9.7 1区 环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL
Qianqian Cai , Xiaopei Chen , Haoqiang Ou , Damian Marelli , Wei Meng
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引用次数: 0

摘要

污水处理在缓解水资源短缺和保护环境免受污染方面发挥着重要作用。由于污水处理过程是一个时变且高度复杂的系统,设计一种有效的优化控制方法以保证出水质量(EQ)和降低能耗(EC)是一项挑战。为了克服这一问题,本文提出了一种动态多目标最优控制策略。首先,设计了一种基于亚种群和多策略探索的多目标灰狼优化算法(MOGWO-SM)来获取能实现EC和EQ平衡的动态设定值,然后采用基于扩展状态观测器的多单元非奇异快速终端滑模控制器(MNFTSMC-ESO)对这些设定值进行精确跟踪,使溶解氧和硝酸盐在整个管网中保持适当的浓度。最后,利用1号基准仿真模型(BSM1)验证了所提方法的有效性。仿真结果表明,该方法不仅具有较好的控制精度,而且能保证出水水质满足排放要求,显著降低了EC。在干旱和暴雨条件下,与传统PID策略相比,EC值分别降低了10.14%和21.69%。综上所述,该方法性能优越,具有一定的实际应用潜力,有助于实现废水的可持续管理。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Dynamically multi-objective optimization with state observer for wastewater treatment process
Wastewater treatment plays an important role in alleviating the water shortage and protecting the environment from contamination. Since the wastewater treatment process (WWTP) is a time-varying and highly complex system, it is challenging to design an effective optimization control method to ensure effluent quality (EQ) and reduce energy consumption (EC). To overcome this problem, a dynamically multi-objective optimal control strategy is proposed in this paper. Firstly, a multi-objective gray wolf optimization algorithm based on subpopulation and multi-strategy exploration (MOGWO-SM) is designed to obtain dynamic setpoints that can achieve the tradeoff between EC and EQ. Then, multi-unit nonsingular fast terminal sliding mode controllers based on extended state observer (MNFTSMC-ESO) are used to accurately track these setpoints to keep the dissolved oxygen and nitrate maintained at appropriate concentrations throughout the WWTP. Finally, the effectiveness of the proposed method is verified using the Benchmark Simulation Model No. 1 (BSM1). Simulation results show that the proposed method not only has satisfactory control accuracy, but also can ensure that the effluent quality meets the discharge requirements with a significant reduction in EC. EC values are decreased by 10.14% and 21.69% compared with traditional PID strategy in dry and storm conditions, respectively. Overall, the proposed method has a certain potential for practical application due to its superior performance, contributing to sustainable wastewater management.
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来源期刊
Journal of Cleaner Production
Journal of Cleaner Production 环境科学-工程:环境
CiteScore
20.40
自引率
9.00%
发文量
4720
审稿时长
111 days
期刊介绍: The Journal of Cleaner Production is an international, transdisciplinary journal that addresses and discusses theoretical and practical Cleaner Production, Environmental, and Sustainability issues. It aims to help societies become more sustainable by focusing on the concept of 'Cleaner Production', which aims at preventing waste production and increasing efficiencies in energy, water, resources, and human capital use. The journal serves as a platform for corporations, governments, education institutions, regions, and societies to engage in discussions and research related to Cleaner Production, environmental, and sustainability practices.
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