螺桿鼓風機與溶解氧儀實時銜接，調(diào)節(jié)曝氣效率

采用活性污泥法處理污水過程中，溶解氧（DO）濃度的控制結(jié)果直接關(guān)系到生化曝氣的好壞以及影響曝氣鼓風機的能耗消耗。因此在整個系統(tǒng)運行過程中需要有效監(jiān)測溶解氧值并進行調(diào)節(jié)。螺桿鼓風機的啟停以及轉(zhuǎn)速調(diào)節(jié)可與在線溶解氧儀數(shù)據(jù)關(guān)聯(lián)，實現(xiàn)實時調(diào)節(jié)，有效提高曝氣效率。

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.

常見的污水處理中，溶解氧值的監(jiān)測一般通過溶解氧儀來獲取。而傳統(tǒng)的往往是人工定時持手動溶解氧檢測儀檢測溶解氧值。這種方式雖然能夠獲取相應(yīng)數(shù)值結(jié)果，但無法根據(jù)檢測結(jié)果，及時參與工藝控制，調(diào)整曝氣。尤其是在溫度、污水量、污水水質(zhì)變化較大的情況下。如季節(jié)變化或晝夜溫差引起的微生物需氧變化，企業(yè)污水排放量、水質(zhì)變化引起的溶解氧變化等等。

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.

曦螺桿鼓風機的內(nèi)壓縮特點，在污水曝氣應(yīng)用中本身就具有穩(wěn)定的特性。而為了進一步適應(yīng)污水曝氣中溶解氧需求的多變情況，提高曝氣效率，降低能耗，結(jié)合螺桿鼓風機完善的控制系統(tǒng)，先實現(xiàn)了通過在線溶解氧儀傳遞的數(shù)據(jù)變化，控制設(shè)備的啟停運轉(zhuǎn)。隨后，再在單純啟停的基礎(chǔ)上，完成了由數(shù)據(jù)對螺桿鼓風機轉(zhuǎn)速的控制。這樣就實現(xiàn)了通過獲取污水的溶解氧情況，及時對工藝進行控制，調(diào)整螺桿鼓風機的曝氣量，減少過曝或曝氣不足的產(chǎn)生，提高曝氣效率。設(shè)定后，整個過程由系統(tǒng)自動控制，無須人工干涉，更減少了人員投入。

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.