螺杆鼓风机与溶解氧仪实时衔接，高效调节曝气效率

采用活性污泥法处理污水过程中，溶解氧（DO）浓度的控制结果直接关系到生化曝气的好坏以及影响曝气鼓风机的能耗消耗。因此在整个系统运行过程中需要有效监测溶解氧值并进行调节。螺杆鼓风机的启停以及转速调节可与在线溶解氧仪数据关联，实现实时调节，有效提高曝气效率。

In the process of sewage treatment by activated sludge process, the control result of dissolved oxygen (do) concentration is directly related to the quality of biochemical aeration and the energy consumption of aeration blower. Therefore, it is necessary to effectively monitor and adjust the dissolved oxygen value in the whole system operation process. The start-up, stop and speed regulation of screw blower can be connected with the data of on-line dissolved oxygen meter to realize real-time regulation and effectively improve aeration efficiency.

常见的污水处理中，溶解氧值的监测一般通过溶解氧仪来获取。而传统的往往是人工定时持手动溶解氧检测仪检测溶解氧值。这种方式虽然能够获取相应数值结果，但无法根据检测结果，及时参与工艺控制，调整曝气。尤其是在温度、污水量、污水水质变化较大的情况下。如季节变化或昼夜温差引起的微生物需氧变化，企业污水排放量、水质变化引起的溶解氧变化等等。

In common sewage treatment, do value monitoring is usually obtained by dissolved oxygen meter. However, the traditional method is to detect the value of dissolved oxygen with manual dissolved oxygen detector at fixed time. Although this method can obtain the corresponding numerical results, it can not timely participate in process control and adjust aeration according to the test results. Especially in the case of great changes in temperature, sewage volume and sewage quality. For example, the change of microbial oxygen demand caused by seasonal change or temperature difference between day and night, dissolved oxygen change caused by enterprise sewage discharge and water quality change, etc.

曦螺杆鼓风机的内压缩特点，在污水曝气应用中本身就具有稳定节能的特性。而为了进一步适应污水曝气中溶解氧需求的多变情况，提高曝气效率，降低能耗，结合螺杆鼓风机完善的控制系统，先实现了通过在线溶解氧仪传递的数据变化，控制设备的启停运转。随后，再在单纯启停的基础上，完成了由数据对螺杆鼓风机转速的控制。这样就实现了通过获取污水的溶解氧情况，及时对工艺进行控制，调整螺杆鼓风机的曝气量，减少过曝或曝气不足的产生，提高曝气效率。设定后，整个过程由系统自动控制，无须人工干涉，更减少了人员投入。

The internal compression characteristic of Xi screw blower has stable and energy saving characteristics in sewage aeration application. In order to further adapt to the changing situation of dissolved oxygen demand in sewage aeration, improve aeration efficiency and reduce energy consumption, combined with the perfect control system of screw blower, the change of data transmitted by on-line dissolved oxygen instrument is realized to control the start-up and shutdown of the equipment. Then, on the basis of starting and stopping, the speed of screw blower is controlled by data. In this way, through obtaining the dissolved oxygen of sewage, the process can be controlled in time, the aeration amount of screw blower can be adjusted, the over aeration or insufficient aeration can be reduced, and the aeration efficiency can be improved. After setting, the whole process is automatically controlled by the system, without manual interference, and the personnel input is reduced.