| URN | etd-0528126-091345 | Statistics | This thesis had been viewed 2 times. Download 0 times. |
| Author | Jian-An Chu | ||
| Author's Email Address | jerry.chu0820@gmail.com | ||
| Department | Institute Of Mechanical Engineering | ||
| Year | 2025 | Semester | 2 |
| Degree | Master | Type of Document | Master's Thesis |
| Language | zh-TW.Big5 Chinese | Page Count | 77 |
| Title | A Study on Failure Mechanisms and Maintenance Management of Centrifugal Blowers in Domestic Wastewater Treatment Plants |
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| Abstract | Centrifugal blowers are critical components of the aeration system in domestic wastewater treatment plants, and their operating condition directly affects aeration efficiency, treatment performance, and energy consumption. Because these machines operate at high speed for long periods, failures such as bearing defects, insufficient lubrication, imbalance, misalignment, inlet blockage, impeller wear, and control or protection abnormalities may reduce operating efficiency and, in severe cases, lead to shutdowns that affect system stability. Therefore, the investigation of failure mechanisms and maintenance management of centrifugal blowers is of practical and engineering significance. This study focused on centrifugal blowers used in domestic wastewater treatment plants. A literature review method and secondary data analysis were adopted. Official operation and maintenance manuals, energy-saving design guidelines, standard maintenance procedure documents, and relevant Chinese and English technical literature were collected and analyzed. The study examined the functional role of centrifugal blowers, their operating characteristics, common failure types, abnormal symptoms, possible causes, and the comparison of preventive maintenance, predictive maintenance, and corrective maintenance approaches. The results show that the major failure types of centrifugal blowers include bearing faults, imbalance or misalignment, lubrication-related problems, inlet blockage, impeller wear or fouling, control and protection abnormalities, and surge risk under low-flow operating conditions. Among these, bearing faults, imbalance/misalignment, and low-flow operating risk were identified as the most significant issues. Major abnormal symptoms include temperature rise, increased vibration, abnormal noise, reduced flow rate, and pressure fluctuation. The findings also indicate that most failures develop progressively. If maintenance is performed only after a failure occurs, the risk of unplanned shutdown increases, which may further affect aeration stability and treatment performance. Based on the analysis, this study suggests that maintenance management of centrifugal blowers in domestic wastewater treatment plants should be based on preventive maintenance, while predictive maintenance mechanisms using temperature, vibration, flow, pressure, and control signals should be gradually introduced. Such an approach can improve equipment reliability and reduce failure risk and maintenance costs. The findings of this study may serve as a reference for failure analysis and maintenance management of centrifugal blowers in domestic wastewater treatment plants. |
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| Advisor Committee | |||
| Files | indicate in-campus access at 1 years and off-campus access at 1 years | ||
| Date of Defense | 2026-05-27 | Date of Submission | 2026-05-28 |