基于磷负荷和动态摩尔系数的智能加药控制研究

郑凯凯; 王燕; 万新宇; 陈亚松; 李激

doi:10.13205/j.hjgc.202509008

基于磷负荷和动态摩尔系数的智能加药控制研究

doi: 10.13205/j.hjgc.202509008

1. 江南大学环境与生态学院, 江苏无锡 214122;
2. 中国长江三峡集团有限公司长江经济带生态环境国家工程研究中心, 武汉 430014

基金项目:

污水厂智能调控算法关键技术优化研究（NBWL202200482）

详细信息

作者简介:
郑凯凯（1990—），男，博士，主要研究方向为污水处理智能控制。zkk1022@126.com

通讯作者:
李激（1970—），女，教授，主要研究方向为污水处理与资源化应用。liji@jiangnan.edu.cn

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出版历程
- 收稿日期: 2024-10-18
- 网络出版日期: 2025-11-05
- 刊出日期: 2025-09-01

Research on intelligent chemical dosing control for phosphorus removal based on phosphate loading and dynamic molar ratio

1. School of Environment and Ecology, Jiangnan University, Wuxi 214122, China;
2. Yangtze Eco-Environment Engineering Research Center, China Three Gorges Corporation, Wuhan 430014, China

摘要

摘要: 随着污水处理厂出水总磷标准的逐步提高，化学除磷加药已成为污水处理厂不可或缺的工艺单元。为确保出水的稳定达标排放，普遍存在除磷药剂过量投加的问题，而目前尚缺乏运行效果良好且能在实际污水处理厂广泛应用的智能加药方案。以某实际污水处理厂气浮深度除磷为例，综合考虑实际运行中水质水量波动大的特点，建立了以磷负荷（kg/h）为核心的智能加药算法，并进行不同磷酸盐浓度情况下PAC投加量的实际测试分析，建立了动态Al/P摩尔比关键参数匹配模型，实时核算PAC投加量，并控制加药泵的流量输出。结果表明：智能除磷加药控制系统运行后的平均药耗从0.71 t/万t下降至0.45 t/万t，节省比例高达36.6%。在降低了污水处理厂运行费用的同时，削减了受纳水体中残留的金属离子，产生了显著的经济和环境效益，对于探索污水处理厂低碳运行和精细化管控模式具有重要意义。
- 磷负荷 /
- 摩尔比 /
- 智能加药 /
- 除磷 /
- 药耗
Abstract: With the gradual improvement of the total phosphorus standard for effluent， chemical phosphorus removal has become an indispensable process unit in wastewater treatment plants. To ensure the stable and compliant discharge of total phosphorus， the excessive addition of phosphorus removal chemicals is a common issue. However， few intelligent dosing schemes have demonstrated significant operational effects in practice. This paper took the deep phosphorus removal in the air flotation process section of an actual wastewater treatment plant as an example. It comprehensively considered the characteristics of large fluctuations in water quality and quantity during actual operation， established an intelligent dosing algorithm with phosphorus loading （kg/h） as the core control strategy， and conducted actual testing and analysis of PAC dosage under different phosphate concentrations. Moreover， a model for matching the key parameters of the dynamic Al/P molar ratio was established to calculate the PAC dosage in real time and control the flow output of the dosing pump. The results showed that the average chemical consumption of the intelligent phosphorus removal system decreased from 0.71 t per 10⁴ t of water to 0.45 t per 10⁴ t of water after operation， representing a significant reduction of 36.6%. The implementation of the system not only reduced the operating costs of the wastewater treatment plant but also decreased the residual metal ions in the receiving water body， generating significant economic and environmental benefits. It is of great significance for exploring low-carbon operation and refined control of wastewater treatment plants.
- phosphorus loading /
- molar ratio /
- intelligent dosing /
- phosphorus removal /
- chemical consumption

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参考文献(12)

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