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Development and Study of Internal Recirculation Flow Control Strategy in A/O Nitrogen Removal Process
Author(s): PENG Yongzhen, MA Yong, WANG Hongchen, GAN Yiping, YANG Xiangping
Pages: 201-
206
Year: 2004
Issue:
2
Journal: JOURNAL OF BEIJING UNIVERSITY OF TECHNOLOGY
Keyword: A/O脱氮工艺; 内循环控制策略; 模糊控制器;
Abstract: 为了在A/O(anoxic/oxic)脱氮工艺中对内循环进行有效的控制,将好氧区生成的硝酸氮回流到缺氧区,实现氮的有效去除,在分析了反硝化反应对进水COD利用效率及反硝化速率影响因素的基础上,得出内循环控制策略就是控制内循环回流量以维持缺氧区末端硝酸氮质量浓度处于最优设定值2.5 mg/L,研究表明该设定值具有很强的鲁棒性,不随进水负荷变化而变化,出水硝酸氮和总氮质量浓度可以实现最低值,同时可大大降低内循环能耗.在上述分析的基础上建立了内循环模糊控制器以期实现污水厂的智能控制.
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