In the process of sewage treatment, the speed adjustment of the mixer is a key step, which directly affects the efficiency and quality of sewage treatment. Here are some suggestions on how to adjust the mixer speed:

First, the basic adjustment based on the operation manual

Consult the operating manual: Each type of mixer comes with an operating manual that details the best operating parameters for the equipment, including the speed range. This is the basis for adjusting the speed.

Set the initial speed: Set an initial speed according to the speed range provided in the operation manual and the actual processing requirements.

Second, dynamic adjustment according to actual demand

Water quality characteristics:

Water quality changes: The water quality of sewage will change with time and source, including suspended matter concentration, organic matter content, etc. According to the different water quality, timely adjust the speed of the mixer. For example, in the period of poor water quality and high concentration of suspended solids, it is necessary to increase the rotational speed to enhance the stirring effect; When the water quality is good, the speed can be appropriately reduced to reduce energy consumption.

Process requirements: Different sewage treatment processes have different requirements for the speed of the mixer. For example, in the biological treatment stage, it is necessary to ensure adequate contact and mixing of microorganisms and sewage, so the speed of the mixer should be moderate and stable.

Mixing effect evaluation:

Observe the mixing: By observing the mixing of sewage in the mixing tank, you can initially determine whether the speed of the mixer is appropriate. If mixing is uneven or dead zones appear, the speed may need to be adjusted.

Test water quality indicators: regularly test the water quality indicators after treatment, such as the removal rate of suspended solids, COD removal rate, etc., to evaluate the mixing effect of the mixer. If the indicator is not up to standard, you may need to adjust the rotational speed or other processing parameters.

Technical means to assist adjustment:

Frequency conversion speed regulation technology: The use of frequency conversion speed regulation technology can achieve accurate control of the speed of the mixer. By adjusting the output frequency of the inverter, the speed of the mixer can be flexibly adjusted according to the actual demand.

Acoustic detection system: For some advanced sewage treatment systems, acoustic detection system can be equipped to monitor the acoustic signal in the water body in real time, so as to determine the distribution of pollutants and adjust the speed of the mixer accordingly.

Third, precautions

Avoid too high or too low speed: too high speed may lead to increased energy consumption, equipment wear, and reduced mixing effect; However, too low rotational speed may lead to uneven mixing and reduced processing efficiency. Therefore, when adjusting the speed, attention should be paid to keeping it within a reasonable range.

Regular maintenance and inspection: Regular maintenance and inspection of the mixer to ensure the normal operation and wear of its components. If any exception is found, handle it in time and adjust the rotational speed.

To sum up, the speed adjustment of the mixer in the sewage treatment process is a process that needs to consider many factors comprehensively. By combining various methods such as operation manual, actual needs and technical means, the precise control and optimal adjustment of the speed of the mixer can be realized, so as to improve the efficiency and quality of sewage treatment.

Nanjing LanJiang Water Treatment Equipment Co.,Ltd manufactures equipment for wastewater treatment. We were established in 2001. Since then, we designed and produced submersible mixers, top entry mixers, aerators and other wastewater treatment equipment.