厌氧消化过程系统动力学模型构建方法研究  

Study on Systems Dynamic Model of Anaerobic Digestion Process

作　　者：阎中[1] 王凯军[2] 

机构地区：[1]北京市环境保护科学研究院,北京100037 [2]清华大学环境科学与工程系,北京100084

出　　处：《中国沼气》2009年第2期3-8,共6页China Biogas

基　　金：国家863计划"水污染控制技术与治理工程"重大专项(2002AA601990)

摘　　要：厌氧消化过程具有非线性、超复杂、多反馈等诸多特点,传统数学模拟方式存在诸多不足与缺陷,尤其在模型的进化过程中存在较大的局限性。针对如上问题,研究引入系统动力学(SD)理论,采用SD建模方法构建了厌氧消化过程的数学模型。本文详细介绍了厌氧消化过程系统动力学分块混箱模型(ABMM)的构建理论,步骤及方法,并利用实验室规模EGSB反应器进行了验证。研究结果表明,基于SD方法建立的厌氧消化过程数学模型具有模型结构简单、信息再现性强、易于理解、方法融合性强等系列优势。在给定条件下可以实现相对较为理想的模拟效果。Anaerobic digestion system is a multi-variables, strong correlative, strong non-linear and extreme complicated system. Traditional modeling methods have some deficiencies. According to the problems before-mentionod, a system dynamics （SD） is put forward to construct the model of anaerobic digestion system. This paper introduced the theory, modeling procedure, and method of the system dynamics, and validated the results by a lab-scale EGSB reactor. Results show that the model constructed by system dynamics have many advantages, such as simplicity of model＇s construction, better reappearance of the information, easier for understanding, combination of different methods, and so on. On given condition, this model can give a well simulation result.

关 键 词：系统动力学 厌氧系统 表函数 分块建模 分块混箱 

分 类 号：X703[环境科学与工程—环境工程] S216.4[农业科学—农业机械化工程]