A sewage treatment global optimization control method based on multi-agent collaborative game

By modeling the wastewater treatment system as a multi-agent collaborative control system, and using the Dec-POMDP framework and reinforcement learning mechanism, the problems of water quality fluctuation and energy waste in wastewater treatment are solved, and global optimal control and resource optimization are achieved.

CN122411331APending Publication Date: 2026-07-17WUHAN ZHENGYUAN AUTOMOTIVE INSTR ENG CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN ZHENGYUAN AUTOMOTIVE INSTR ENG CO LTD
Filing Date
2026-05-28
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing wastewater treatment control methods lack cross-stage information exchange and collaborative optimization mechanisms, leading to increased water quality fluctuations, increased energy consumption, and waste of chemicals. It is difficult to simultaneously ensure water quality compliance, minimum energy consumption, and minimum chemical consumption in multi-objective optimization scenarios.

Method used

The key control links of wastewater treatment are modeled as five independent heterogeneous intelligent agents. A distributed Dec-POMDP optimization framework is adopted, and global collaborative control is achieved through reinforcement learning and collaborative game mechanism. The PPO algorithm and consensus negotiation mechanism are combined to solve the problems of goal conflict and action incoordination among intelligent agents. The Lagrange multiplier method and attention mechanism are used to optimize the reward distribution.

Benefits of technology

The system achieves optimal global operation of the wastewater treatment system, saves 10% to 15% on energy in the aeration system, saves 15% to 20% on carbon source chemical consumption, ensures stable and compliant effluent quality, and improves system robustness and safety.

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Abstract

本申请涉及污水处理智能控制技术,提出一种基于多智能体协同博弈的全局优化控制方法。将曝气能效、碳源补给、内回流脱氮、污泥回流动态及进水负荷均衡建模为五个异构智能体,构建分布式Dec‑POMDP模型,采用中心化训练、分布式执行架构与PPO算法实现稳定策略更新。通过共识协商管理器、意图博弈修正机制及注意力权重动态分配,解决目标冲突;引入冲突消解算子保障动作安全。全局奖励函数以拉格朗日乘子法嵌入排放限值硬约束,结合内在好奇心增强探索能力,并通过价值传播拓扑实现信用精准分配。利用Lyapunov稳定性与势能对策理论确保策略收敛至纳什均衡,达成水质达标、能耗降低与药耗节约的协同优化,曝气节能10%‑15%,碳源节省15%‑20%。
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