Rotary fans are widely used in slaughterhouse wastewater treatment. The following is an introduction to their application:
###Working principle
Rotary fans use two blade shaped rotors to make relative motion within the cylinder to compress and transport gas. When the rotor rotates, gas is drawn into the space between the rotor and the cylinder. As the rotor rotates, the gas is gradually compressed and discharged. The working process of this type of fan is relatively stable, with relatively low vibration and noise.
###The role of sewage treatment in slaughterhouses
-Aeration and oxygenation: Slaughterhouse wastewater contains a large amount of organic matter and microorganisms, which require aeration to provide sufficient oxygen and promote the growth and metabolism of aerobic microorganisms, thereby decomposing organic matter in the wastewater and achieving the goal of purifying water quality. Rotary fans can evenly introduce air into the aeration tank, providing a good living environment for microorganisms.
-Mixing and Stirring: During aeration, the airflow generated by the rotary fan can also play a role in mixing and stirring, allowing pollutants in the sewage to fully contact microorganisms and improve treatment efficiency. Preventing sludge sedimentation and uneven water quality in the aeration tank is beneficial for the stable operation of the entire sewage treatment system.
###Application advantages
-Stable operation: The structure of the rotary fan is simple, with a small gap between the rotor and the cylinder, and minimal wear during operation. It can operate stably for a long time, reducing equipment failures and maintenance times, and ensuring the continuity of the slaughterhouse sewage treatment system.
-Energy saving and efficient: This fan has high volumetric efficiency and consumes less energy compared to other types of fans while providing the same air volume. For example, compared with traditional Roots blowers, rotary blowers can save energy by about 10% -20% under the same operating conditions, which helps to reduce the operating costs of slaughterhouse wastewater treatment.
-Low noise: Slaughterheads are usually located near residential areas or areas with certain noise requirements. Rotary fans have low noise levels during operation, generally around 70-80 decibels, which can meet environmental protection requirements and reduce the impact on the surrounding environment and workers.
-Easy maintenance: Its structural design makes maintenance work relatively simple. Daily maintenance mainly includes checking the lubrication system, belt tension, impeller wear, etc. of the fan, and the replacement of vulnerable parts is relatively convenient, reducing maintenance costs and downtime.
###Application precautions
-Selection should be appropriate: Based on the sewage discharge volume, water quality characteristics, and requirements of the sewage treatment process of the slaughterhouse, accurately calculate the required air volume and pressure, and select a suitable specification of rotary fan. If the selection is improper, it may lead to insufficient or excessive aeration, affecting the effectiveness of sewage treatment.
-* * Installation and Debugging * *: During installation, ensure the levelness and verticality of the fan, and the connecting pipes are firm and leak free. During the debugging process, it is necessary to strictly follow the operating procedures, check whether the operating parameters of the fan are normal, such as air volume, pressure, speed, etc., and adjust them in a timely manner if any problems are found.
-* * Daily maintenance * *: Establish a comprehensive maintenance system and regularly inspect and maintain the fan. For example, regularly changing lubricating oil, cleaning filters, checking the wear of belts, etc. At the same time, it is necessary to closely monitor the operating status of the fan. If abnormal sounds, vibrations, or temperature increases are found, the machine should be stopped in a timely manner for inspection and troubleshooting.
-* * Prevent blockage * *: Slaughterhouse wastewater may contain impurities such as hair, minced meat, oil, etc., which can easily block the air inlet or aeration pipeline of the fan. Therefore, it is necessary to install an effective filtering device in front of the fan inlet and clean it regularly to ensure the normal intake and aeration effect of the fan.
-Winter Cold Prevention: In cold regions during winter, corresponding cold prevention measures should be taken to prevent water from freezing in fans and pipelines, which can affect the normal operation of fans. For example, insulation treatment can be applied to fans and pipelines, or antifreeze can be added to wastewater.
