A: Decrease in filtration efficiency with filter discs can be caused by various factors. Understanding these factors and implementing appropriate measures can help improve the performance of sintered filter discs. Here are some potential causes and ways to enhance sintered disc performance:

Cause of decrease in filtration efficiency:

1.Clogging and Accumulation of Debris: Over time, filter discs can become clogged with debris, reducing their filtration efficiency. This can occur when the filter is exposed to high levels of particulate matter or when the filter is not cleaned or maintained regularly. To improve performance, establish a regular cleaning and maintenance schedule for the filter discs. This may involve backwashing, chemical cleaning, or mechanical cleaning methods depending on the nature of the accumulated debris.

2.Inadequate Pore Size or Pore Structure: If the filter disc’s pore size or pore structure is not suitable for the specific application, it can lead to decreased filtration efficiency. Assess the requirements of the filtration process and select filter discs with the appropriate pore size and structure. Consult with filter manufacturers to determine the optimal pore size for the desired level of filtration efficiency.

3.Material Compatibility: Ensure that the filter disc material is compatible with the operating conditions and the fluids being filtered. Some fluids can react with certain materials, leading to decreased filtration efficiency or material degradation. Select filter discs made from materials that offer good chemical resistance and compatibility with the process fluids.

4.Operating Parameters: Operating parameters such as temperature, pressure, and flow rate can impact the filtration efficiency of filter discs. Exceeding the recommended operating limits can lead to reduced performance. Review the manufacturer’s specifications and ensure that the filter discs are operated within the prescribed limits. Implement pressure and flow control measures if necessary to maintain optimal performance.

Methods of improve the performance:

1.Seal Integrity: The seal between the filter disc and the filter housing is crucial for maintaining filtration efficiency. Any gaps or leaks in the sealing interface can bypass the filter and reduce its effectiveness. Ensure that the seal is properly installed and maintained. Regularly inspect the seal for any signs of wear or damage and replace it as needed.

2.Filter Disc Design: The design of the filter disc, including the number and arrangement of pores, can impact filtration efficiency. Consider factors such as the desired flow rate, particle size distribution, and cake formation when selecting filter discs. Optimize the design parameters to maximize filtration efficiency. Consulting with filter manufacturers or experts can provide valuable insights into the most suitable filter disc design for specific applications.

3.Backwashing or Regeneration: If the filter disc becomes clogged or its performance decreases over time, backwashing or regeneration techniques can help restore filtration efficiency. Backwashing involves reversing the flow through the filter to dislodge accumulated particles. Regeneration methods may include chemical cleaning or thermal treatments to remove contaminants and restore the filter’s performance.

4.Regular Performance Monitoring: Implement a regular monitoring program to assess the filtration efficiency of the filter discs. This can involve measuring pressure differentials across the filter, conducting particle count analyses, or assessing the filtrate quality. By monitoring performance over time, any decline in efficiency can be identified early, allowing for prompt corrective actions.