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《工程(英文)》 >> 2021年 第7卷 第2期 doi: 10.1016/j.eng.2020.07.027

基于可控参数的前馈神经网络出水总氮预测模型研究

a Institution of Environment Pollution Control and Treatment, Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China
b Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou 310058, China
c Zhejiang Provincial Engineering Laboratory of Water Pollution Control, Hangzhou 310058, China
d Haining Water Investment Group Co., Ltd., Haining 314400, China
e Haining Capital Water Co., Ltd., Haining 31440, China

收稿日期: 2020-04-12 修回日期: 2020-05-08 录用日期: 2020-07-15 发布日期: 2020-12-01

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摘要

当前,出水总氮(TN)稳定达标是我国城镇污水处理厂面临的关键问题。本文基于我国城镇污水处理厂主流工艺——序批式活性污泥工艺(SBR),构建了一种基于可控参数的前馈神经网络(FFNN)出水总氮预测模型。与已有预测模型相比,本模型具备以下两个特点:①采用可控参数(表面气速与缺氧段时长)代替溶解氧作为模型主要输入参数,明显提高模型可用可控性;②采用算法优化的前馈神经网络构建模型,显著提高模型预测精准度。研究结果表明:量化共轭梯度法优化的FFNN模型预测精准,其拟合相关系数(R)明显高于其他相关模型;优化后的FFNN模型可根据进水与关键控制参数实现出水TN精准预测,有望实现城镇污水处理厂总氮稳定去除、系统节能降耗,助力国家“3060”碳目标实现。

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