It was analysed and studied that organic wastewater was biodegraded with immobilized cells by the method of orthogonal test from the Angle of biochemical reaction kinetics in this paper.

从生化反应动力学的角度，用正交试验的方法，对固定化细胞降解有机废水的过程进行了分析和研究。

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The orthogonal test design method is very suitable to be popularized and applied in minor enterprises because of its features of scientific method, easy operation, lower cost and striking effect.

正交试验设计法以其方法科学、操作简便、费用节省、效果显著等特点，十分适合在小企业推广运用。

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Conclusion Orthogonal Test Method can enhance the efficiency to screen the best combination of three medical herbs, and is of time saving and resource saving.

结论正交设计方法有效的筛选出了三种天然药物的最佳组合方案，提高了实验效率，节约科研资源。

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