1 refers to the oxygen required by microorganisms in the biological contact oxidation process of environmental protection water treatment, which is supplied by aeration of the sewage treatment fan. Characterized in that a filler is arranged in the pool, and the sewage is oxygenated by aeration at the bottom of the pool, so that the sewage in the pool is in a flowing state.
2. Ensure the full contact between the sewage and the filler immersed in the sewage, and avoid the defect of uneven contact between the sewage and the filler in the biological contact oxidation tank. We call the fan with this function sewage treatment fan.
Several commonly used fans
1. Roots blower. If the load requires constant current effect, use Roots blower. Roots blower is a constant-current blower, and its main working parameter is air volume. The output pressure changes with the change of pipeline and load, and the air volume changes little. Roots blower is a kind of high-pressure blower, and Roots blower is a positive displacement blower. The delivered air volume is proportional to the number of revolutions, and the gas is transported from the suction side to the discharge side.
2. Centrifugal fan. If the load needs constant pressure effect, use centrifugal fan. Because centrifugal fan belongs to constant pressure fan, the main working parameter is wind pressure, and the output air volume changes with the change of pipeline and load, but the wind pressure changes little. Centrifugal fan, the wind pressure is not big. The air compression process is usually carried out by several working impellers (or stages) under the action of centrifugal force. Centrifugal fans have square torque characteristics, while roots fans basically have constant torque characteristics.
3. Rotate the fan. Roots blower generally has large air volume and high pressure, and the noise of roots blower is also very high. If the air volume is relatively small and the noise requirement is relatively high, choose the cyclone fan. Cyclone fan also belongs to constant current fan, and its main working parameter is air volume. The output pressure changes with the change of pipeline and load, and the air volume changes little. Rotary blower is variable capacity compression, and its main characteristics are: low speed, low noise, low vibration and so on.
A good brand in China
1, Shaanxi Drum (a well-known trademark in China), Zhanggu Zhanggu (a top 500 enterprise in China), Changfeng (a famous brand in Hubei), Gong Jin (a famous brand in Shandong), Shanggu (a famous brand in Shanghai), Haofutun, Sanfeng (a famous trademark in Hubei), Jintongling (a famous trademark in Jiangsu) and Gu Wu (a famous trademark in Wuhan).
2, long drums, drums, drums, brocade, etc. , for reference! ! For details, please refer to the cost performance.