污水处理过程中pH值控制方法的研究(英文)  

Research on pH Value Control for Sewage Treatment

作　　者：李辉[1] 洪涛[1] 

机构地区：[1]电子科技大学机械电子工程学院,成都610054

出　　处：《电子科技大学学报》2003年第6期632-634,共3页Journal of University of Electronic Science and Technology of China

基　　金：四川省科技厅应用基础资助项目,编号:H04010801JS40011~~

摘　　要：以某污水处理示范工程为例,依据一体化氧化沟的工艺流程建立了污水酸碱偏离度的数学模型,通过非线性变换确定了pH测量值与污水酸/碱偏离度的关系。在此基础上,推导了以数字式流量阀为控制对象的pH值控制算法,运算中采用带约束条件的最小二乘法对参数θo进行估计,实现了参数的在线辨识。该控制方法已经在示范工程中进行了实验,控制效果理想。Take a model sewage treatment plant as an example, the mathematic model of sewage acid/alkali deviation is figured out oriented by combined oxidation ditches. The relationship between pH measuring value and acid/alkali deviation is built up by means of non-linear transformation. According to these results, the adaptive algorithm is given out for digital discharge valve control. The algorithm adopted Restricted Least Square Method to estimate the parameterθ0 and realized estimating on-line. The control system has been used in that model plant and the controlling results are proved good.

关 键 词：污水处理 PH值 控制 算法 

分 类 号：TP273.5[自动化与计算机技术—检测技术与自动化装置]