Application of Roots Blower in Sewage Treatment
Roots blowers are widely used in sewage treatment and play a key role, so we will further introduce the application of Roots blowers in sewage treatment. In the biochemical treatment system, the Roots blower consumes a lot of energy, generally accounting for about 40% of the total energy consumption of the entire sewage station, and some require even more. The Roots blower is a volumetric blower, and the air volume delivered is proportional to the rotational speed. The three-blade impeller rotates once and the two impellers perform suction and exhaust three times. Compared with the two-impeller type, the gas pulsation becomes less and the load change is small. , High mechanical strength. There are two three-blade impellers on two parallel shafts, and a small distance is always maintained between the impeller and the inner surface of the oval casing and the impeller. Since the impeller rotates at a uniform speed in the opposite direction, the casing and the impeller The enclosed volume of gas is conveyed from the suction side to the discharge side. Each impeller is always in the correct phase by the synchronous gear, and will not touch each other, so it can be high-speed, does not need internal lubrication, and has a simple structure, stable operation, and stable performance. It is suitable for various purposes and is used in a wide range of applications. field. In the sewage treatment system, all kinds of water pumps also need to save energy. We can use frequency converter control to achieve the purpose of energy saving according to the needs of the process.
1. What is the role of the roots blower in sewage treatment?
In the sewage treatment system, the blower is mainly used to provide air to the biochemical system and provide the dissolved oxygen required by the activated sludge microorganisms to ensure the oxygen demand of the microbial metabolic process.
2. It is mainly used in the aeration tank, and some biochemical treatment sections also need it.
3. There are a few points to pay attention to when choosing a model:
4. Requirements for blowers in the sewage treatment industry.
Generally speaking, they can be divided into two categories. The first type is a volumetric blower whose characteristic is flow, such as Roots blower, rotary vane blower, etc.; the other type is a blower whose characteristic is pressure, such as vortex blower, centrifugal blower, etc. Choose the appropriate type according to the different performance requirements of the processing system.
5 The blower selected must have low energy consumption.
Since the energy consumption of blowers accounts for about half of the total energy consumption of water treatment, it is necessary to choose blowers with lower energy consumption as much as possible.
6. Low noise.
The essence of sewage treatment is to protect the environment. Therefore, secondary pollution should not occur or should be avoided as far as possible during the treatment process. Therefore, the equipment selected in the sewage treatment system should have low noise performance.
