Study on a discrete-time dynamic control model to enhance nitrogen removal with fluctuation of influent in oxidation ditches

被引：15

作者：

Liu, Yanchen ^{[1
]}

Shi, Hanchang ^{[1
]}

Shi, Huiming ^{[1
]}

Wang, Zhiqiang ^{[1
]}

机构：

[1] Tsinghua Univ, State Key Joint Lab Environm Simulat & Pollut Con, Dept Environm Sci & Engn, Beijing 100084, Peoples R China

来源：

WATER RESEARCH | 2010年 / 44卷 / 18期

关键词：

Discrete-time control model; Simulation; Oxidation ditch; Nitrogen removal; SIMULATION;

D O I：

10.1016/j.watres.2010.01.019

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The aim of study was proposed a new control model feasible on-line implemented by Programmable Logic Controller (PLC) to enhance nitrogen removal against the fluctuation of influent in Carrousel oxidation ditch. The discrete-time control model was established by confirmation model of operational conditions based on a expert access, which was obtained by a simulation using Activated Sludge Model 2-D (ASM2-D) and Computation Fluid Dynamics (CFD), and discrete-time control model to switch between different operational stages. A full-scale example is provided to demonstrate the feasibility of the proposed operation and the procedure of the control design. The effluent quality was substantially improved, to the extent that it met the new wastewater discharge standards of NH3-N < 5 mg/L and TN < 15 mg/L enacted in China throughout a one-day period with fluctuation of influent. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：5150 / 5157

页数：8

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