大型净水厂自动投药系统的建模与研究  

Modeling and Studying of the Automatic Coagulant Dosage System of the Large-scale Water Works

作　　者：余亚冰[1] 罗磊[1] 于波[1] 强明辉[1] 张斌 

机构地区：[1]兰州理工大学电气工程与信息工程学院,甘肃兰州730050 [2]兰州供电公司,甘肃兰州730050

出　　处：《甘肃科学学报》2012年第2期120-123,共4页Journal of Gansu Sciences

基　　金：甘肃省省长基金(GS0152A522012)

摘　　要：水厂混凝投药过程控制在给水处理中占有重要地位,直接关系到出水水质;而这一过程具有非线性、大时滞、多变量等特点,很难建立准确的数学模型.通过对某水厂实际运行数据进行收集和整理,运用最小二乘法,研究了影响水质的主要因素(原水水质与混凝剂投加量)的定量数学关系式,建立了针对特定水厂自动投药的数学模型,工程实例证明:该数学模型在生产过程控制中效果良好,实际投药值和计算值误差处于[-0.7,0.98]之间.The coagulant dosing process of water works plays an important role in water treatment. It connects with water quality directly. But it has the characteristics of nonqinearity,long lag in time,much vari- ance in amount, etc. So it is difficult to establish an accurate model. By collecting and sorting waterworks data, and using the least square method,we have found the main factors influencing the turbidity of water and its coagulant dosing, and established the mathematical model for automatic coagulant dosage system in particular waterworks. The model works well in practical production.

关 键 词：水处理 数学模型 加药控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]