Proper use of Roots blower for sewage treatment:

In sewage treatment, sewage disposal Roots blower The energy consumption of aeration accounts for about half of the total energy consumption Aeration blower It plays a vital role in saving operating costs. Today, the technicians of Worcester Environmental Protection want to introduce Roots blower I hope it can help you make better choices and use Roots blower.

According to the theory of fluid mechanics, the flow process of gas will be accompanied by loss. For example, after the gas flows through the throttling device, the pressure of the gas flow will decrease accordingly, that is, they will lose the useful work of Roots blower. Because all this happened in the process of Roots blower conveying gas, it is a waste Roots blower Energy.

Roots blower Working point is Roots Blower The intersection of the performance curve at a certain speed and the resistance characteristic line of the pipe network. In actual operation, roots blower does not always stay at the design operating point. It will change with the user's needs or external conditions, that is Aeration fan In fact, it works under variable working conditions. To make Roots blower When the air pressure or air volume reaches a certain target value Aerator blower Or pipe network is controlled artificially, also called regulation. Through effective regulation, it can not only meet the requirements of production on flow or pressure, but also save energy under the condition that roots blower can work stably. In short, the purpose of regulation is to meet performance requirements, expand (stabilize) working conditions, achieve energy conservation and prevent surge.

Roots blower Different adjustment methods can achieve the same goal, but the energy-saving effect is different. According to theoretical analysis and practical proof, the following four conclusions can be drawn.

⑴ For Aeration fan With compressor, outlet throttling regulation consumes more power. Although the relative flow Qr (the ratio of actual flow Q to design flow Q0) decreases, the power also decreases accordingly. For example, when Q=0.65Q0, the corresponding power is reduced to about 80, but compared with other adjustment methods, the energy consumption still ranks first.

⑵ If the relative flow changes little (or the regulating depth is small), the power consumption of several regulating methods is not different. That is to say, the regulation mode has little impact on the energy saving effect, even does not save energy, but consumes more power due to the existence of the regulation device (such as hydraulic coupler).

⑶ Generally speaking, the greater the adjustment depth, the more significant the energy-saving effect. Therefore, it is necessary to carefully select the adjustment mode in order to obtain great benefits. ⑷ The speed change regulation curve is close to the ideal curve. Therefore, the variable speed regulation mode is superior, especially the energy-saving scheme of variable frequency motor speed regulation, but it needs to add a variable frequency device. For medium and small capacity frequency conversion speed regulation, it is recommended to actively try; Due to the high price of high-capacity and high-voltage variable frequency speed regulation device, it is necessary to make a comprehensive comparison and decide whether to accept or reject it according to the specific situation. In a word, it is necessary to consider not only the regulation performance, but also the initial investment, reliability and economy of the equipment to evaluate the advantages and disadvantages of the regulation mode.

The above is about the correct use of Roots blower for sewage treatment. I hope it can help you. If you don't understand, please feel free to contact us: Tel: 0531-83663588