The integral operation in the data processing of free settling experiment and the drawing of the contour line of removal suspended particle percentage in the coagulation-flocculation experiment are necessary and difficult.The traditional trapezoidal area integration method and the manually drawing of the contour line have many defects such as subjectivity and heavy work load.The data of free settling experiment and the coagulation-flocculation experiment were processed by using Origin,taking two cases as examples.This method was proven to be simple,the rendering graphics were standard and the calculation was precise.%自由沉淀实验数据处理中需要进行积分运算,絮凝沉淀实验数据处理中需要绘制悬浮颗粒去除百分数等值线.传统的梯形积分法和手工绘制等值线法存在主观性强、工作量大等缺陷.文中结合2个实例介绍了利用Origin软件进行自由沉淀和絮凝沉淀实验数据处理的方法,简单易行,绘图规范,计算精确.
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