一种AOA工艺的回流系统控制方法及相关装置

By collecting the influent COD/TN ratio and reaction zone parameters in the AOA process, the carbon source allocation weight and denitrification weight were determined. Combined with the control model, the reflux ratio and carbon source dosage were calculated, which solved the problem of uneven carbon source allocation in the AOA process under low carbon-nitrogen ratio and water quality fluctuations, and achieved stability of denitrification effect and reduction of energy consumption.

CN121377325BActive Publication Date: 2026-07-17HARBIN INSTITUTE OF TECHNOLOGY (SHENZHEN) (INSTITUTE OF SCIENCE AND TECHNOLOGY INNOVATION HARBIN INSTITUTE OF TECHNOLOGY SHENZHEN) +1
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN INSTITUTE OF TECHNOLOGY (SHENZHEN) (INSTITUTE OF SCIENCE AND TECHNOLOGY INNOVATION HARBIN INSTITUTE OF TECHNOLOGY SHENZHEN)
Filing Date
2025-10-13
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The existing AOA process suffers from insufficient synergistic regulation between anaerobic, aerobic, and anoxic zones and internal and external recirculation under conditions of low carbon-to-nitrogen ratio and water quality fluctuations. This leads to an uneven distribution of carbon sources, affecting denitrification efficiency and increasing energy consumption.

Method used

By collecting the COD/TN ratio of the influent and the operating parameters of the reaction zone, the carbon source allocation weight parameter α and the denitrification weight parameter β are determined. Combined with the preset control model, the internal reflux ratio, external reflux ratio and the amount of external carbon source added are calculated. The model parameters are then corrected based on the total nitrogen concentration of the effluent to achieve reasonable carbon source allocation and stable denitrification effect.

Benefits of technology

Under conditions of low carbon-to-nitrogen ratio and fluctuating water quality, the synergistic regulation of anaerobic, aerobic, and anoxic zones with internal and external recirculation was achieved, improving denitrification stability and reducing energy consumption and external carbon usage.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN121377325B_ABST
    Figure CN121377325B_ABST
Patent Text Reader

Abstract

本发明公开一种AOA工艺的回流系统控制方法及相关装置，方法包括：采集进水COD / TN比值及反应区运行参数；基于COD / TN比值确定碳源分配权重参数与脱氮权重参数；将权重参数与运行参数输入预设控制模型，计算内回流比、外回流比及外加碳源投加量；根据输出结果实施相应调节，并基于出水总氮浓度偏差修正模型参数。本发明技术方案能够实现内外回流与碳源投加的协同自适应控制，结合反应区有效容积调整与多维度参数约束，克服传统方法依赖固定比例和单一指标的问题，在低碳氮比及水质波动条件下保障脱氮稳定性，提升碳源利用效率，兼顾节能与除磷效果。
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Optimization method of A2O biological nitrogen and phosphorus removal reflux ratio

    CN112794444A

  • Intelligent denitrification regulation and control method and regulation and control system for aquaculture wastewater

    CN114790039A