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首页> 外文期刊>Water Science and Technology >Formulation and optimization of biological removal of flue gas pretreatment wastewater and sulfur recycling process by Box-Behnken design
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Formulation and optimization of biological removal of flue gas pretreatment wastewater and sulfur recycling process by Box-Behnken design

机译：Box-Behnken设计制定并优化烟气预处理废水的生物去除和硫磺回收工艺

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The aim of this study was to investigate optimum conditions for biological removal of flue gas pretreatment wastewater and achieve maximum elemental sulfur yield. A three-factor, three-level Box-Behnken design was used to derive a second-order polynomial equation and construct contour plots to predict responses. The independent variables selected were hydraulic retention time (X_1), inlet sulfate concentration (X_2), and air flow (X_3). Fifteen batches were done in a biological united system and evaluated for elemental sulfur yield (Y1). The transformed values of the independent variables and Y1 were subjected to a full-model second-order polynomial equation. The equation was modified based on Fisher's F- and probability P-values. The computer optimization process and contour plots predicted the values of independent variables X_1, X_2 and X_3 (16 h, 1,348 mg L~(-1) and 165 L h_(-1) respectively), for maximized response of Y_1. The experimental results at predicted conditions demonstrate that the modified model equation has good applicability to the practical system.
机译：这项研究的目的是研究生物去除烟道气预处理废水并获得最大元素硫产量的最佳条件。三因子，三级Box-Behnken设计用于导出二阶多项式方程，并构造轮廓图以预测响应。选择的独立变量是水力停留时间（X_1），入口硫酸盐浓度（X_2）和空气流量（X_3）。在生物联合系统中进行了15批处理，并评估了元素硫的收率（Y1）。对自变量和Y1的变换值进行全模型的二阶多项式方程式。该方程是根据Fisher的F值和概率P值修改的。计算机优化过程和轮廓图预测了独立变量X_1，X_2和X_3的值（分别为16 h，1,348 mg L〜（-1）和165 L h _（-1）），以实现Y_1的最大化响应。在预测条件下的实验结果表明，改进后的模型方程对实际系统具有良好的适用性。

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