用溶解氧浓度作为SBR法过程和反应时间控制参数

 进行了以DO作为SBR法过程和反应时间控制参数的试验研究。结果表明，无论使曝气量或初始污泥浓度大幅度变化，还是逐渐或突然改变初始有机物浓度等各种试验条件，都会在反应阶段开始不久出现所谓平衡DO浓度现象；当有机物达到其难降解浓度时DO浓度迅速地大幅度升高。因此，在目前还没有简易、快速的有机物浓度传感器的情况下，DO不仅可作为反应时间的指示性控制参数，而且也能可靠地作为反应阶段的过程控制参数。

The control parameter of SBR process and its reaction time using DO.

The experimental research is introduced in which DO was used as the control parameter of SBR process and reaction time in this paper .It was revealed that the balanced DO concentration appeared soon after the reaction stage starting,and DO level rose quickly in large range when COD was degraded to its nondegradation concentration under that condition,no matter that change the aeration rate or the MLSS concentration in large range,or change the initial COD concentration gradually or suddenly in the various experimental conditions. Consequently it is indicated that DO can be used not only as the indicative control parameter of SBR reaction time,but also as the process control parameter of SBR reliably when a simple and rapid sensor of organic matter concentration does not come out now .