二次回归正交旋转组合设计对反渗透处理VC凝结水工艺条件的优化  

OPTIMIZATION DESIGN TO REVERSE OSMOSIS PROCESSING VC CONDENSATION WATER BASED ON QUADRATIC REGRESSION ORTHOGONAL ROTATING COMBINATION

作　　者：肖入峰[1,2] 刘景洋[2] 张建强[1] 

机构地区：[1]西南交通大学地球科学与环境工程学院,四川成都610031 [2]中国环境科学研究院,北京100012

出　　处：《水处理技术》2012年第6期49-53,共5页Technology of Water Treatment

基　　金：国家水体污染控制与治理科技重大专项(2009ZX07208-002);国际科技合作项目(2010DFB90590)

摘　　要：以VC凝结水为研究对象,选择反渗透膜的温度、压力、回流比、pH为自变量,以VC凝结水TOC去除率为响应值,采用二次回归正交旋转组合设计分析法研究自变量及其交互作用对TOC去除率的影响,并建立了回归方程,通过回归方程求解和响应曲面分析确定了反渗透最优工艺操作条件,并通过贡献率法研究了各因子对响应值的影响程度。结果表明,在试验范围内各因子影响作用大小依次为pH>温度>压力>回流比;反渗透最优操作条件为:温度33.58℃,压力1.34 MPa,回流比0.49,pH为7.45,优化条件下,VC凝结水TOC去除率可达90.22%。试验验证,实际值与模型预测值拟合性良好,偏差为4.75%,优化后去除率提高了8.26%。In order to optimize the treatment of VC condensation water by Reverse Osmosis, Quadratic regression orthogonal rotating combination design methodology was employed to investigate the effects of the independent variables and their interactions on the removal rate of TOC of VC condensation water. Reaction temperature, pressure, backflow ratio and pH were selected as independent variables, and the removal rate of total organic carbon （TOC） of VC condensation water as the response value. The best process operation conditions of Reverse osmosis was studied by response surface analysis, and the influence degree of the factors was studied by the contribution method. The results showed that in the test range size the effect of factors were pH 〉reaction temperature 〉pressure 〉backflow ratio; and the optimal operating conditions of reverse osmosis were temperaatre 33.58~C, pressure 1.34 MPa, backflow ratio 0.49, pH 7.45. In optimized conditions, the removal rate ofTOC of VC condensate water was 90.22%, Experiments showed that the actual value fit the model prediction with 4.75% relative deviation, and the removal rate increases 8.26% after optimization.

关 键 词：反渗透 凝结水 二次回归正交旋转组合 优化 

分 类 号：TQ028.8[化学工程]