Roots blower for wastewater treatment aeration

In the wastewater treatment activated sludge process, an aeration blower with appropriate air volume and pressure is used to continuously and forcefully add air to the wastewater, ensuring that the water in the pool is in contact with the air for oxygenation. The liquid is also stirred to accelerate the transfer of oxygen from the air to the liquid. The aeration blower used in water treatment is commonly referred to as a wastewater treatment blower.

The primary function of the wastewater treatment aeration blower is to supply oxygen to the wastewater treatment aeration tank. In water treatment, the Roots blower primarily serves to aerate the water, thereby increasing its oxygen content. It begins by removing oxidizable precipitated substances. Its role is to enhance the oxygen content, aerate, and ensure full contact between water and air to facilitate the exchange of gaseous substances. This water treatment method removes volatile substances from the water, allowing gases such as odors or harmful gases like carbon dioxide and hydrogen sulfide to escape. It also involves dissolving oxygen into the water to increase the concentration of dissolved oxygen, which is essential for the removal of iron and manganese. Additionally, it promotes the degradation of organic matter by aerobic microorganisms. The function of wastewater treatment is to utilize an air inlet and to aerate and lift the bottom sediment through the bottom air duct, which is then discharged via the wastewater pump. The microorganisms in the wastewater are oxidized, thus achieving the goal of clarifying the wastewater.

Key considerations when selecting water treatment blowers

Applicability of water treatment blowers: When a wastewater treatment system is initially opened, the system pressure is typically within the design range. However, over time, factors such as the blockage of aeration holes and corrosion of valves and pipes can increase the overall system resistance. At this juncture, a positive displacement blower proves to be superior to a centrifugal blower. This is because the flow rate of a positive displacement blower is a fixed characteristic. When external system resistance rises, its outlet pressure also increases, allowing it to discharge gas while maintaining a nearly constant flow rate (provided the blower's capacity and motor power are adequate). In contrast, since the pressure of a centrifugal blower is a fixed characteristic, its air volume decreases with increasing resistance, and aeration becomes impossible once the resistance reaches a certain pressure.

Energy efficiency of water treatment blowers: In the entire wastewater treatment project, the energy consumed by the water treatment blowers constitutes more than half of the system's total energy consumption. Therefore, the selection of the blower is particularly crucial.

Low-noise operation of water treatment blowers: Wastewater treatment aims to protect the environment, and it should not introduce secondary pollution. Consequently, when using water treatment blowers, the noise generated by these devices must be carefully considered to avoid causing environmental disturbances.