Increasing oxygen in order to maintain the higher dissolved oxygen (DO) concentration in the water body is one of the main adjusting measures in this farming mode.

通过向养殖水体充氧，从而使水体中维持较高浓度的溶解氧，是该养殖模式水质管理的主要调控措施之一。

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Finally, in view of the complexity of sewage treatment, select the dissolved oxygen (DO) of aeration process as the research object of control algorithm.

最后，针对污水处理的动态复杂性，选择曝气过程的溶解氧浓度作为研究对象进行了控制算法的研究。

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The result of experiment shows that sludge bulking will take place at any level of organic loading as long as the value of dissolved oxygen(DO) changes correspondingly.

实验结果表明，在低、中、高负荷时，只要溶解氧发生变化，均有可能发生膨胀。

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