What Causes Ragging in Sewage Pumps?

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SUMMARY

Ragging in sewage pumps is primarily caused by the accumulation of fibrous materials on the impeller, leading to decreased efficiency and potential blockages. Key contributors include poor maintenance, broken seals, excessive usage, and impeller wear due to cavitation. Understanding these factors is essential for effective sewage pump operation and maintenance.

PREREQUISITES
  • Knowledge of sewage pump operation and maintenance
  • Understanding of impeller mechanics and cavitation effects
  • Familiarity with common sewage materials that contribute to ragging
  • Experience with troubleshooting pump performance issues
NEXT STEPS
  • Research best practices for sewage pump maintenance
  • Learn about cavitation and its impact on pump performance
  • Explore methods to prevent ragging in sewage systems
  • Investigate the use of advanced materials for impeller design
USEFUL FOR

Engineers, maintenance technicians, and facility managers involved in sewage pump operations and maintenance will benefit from this discussion.

Mohiden
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Hello,

I would like to know what causes a RAGGING in sewage pump?

Here are some causes that I can think of but I need more.

Poor maintenance
Broken seal
Exessive usage
impeller wear-cavitation


Many thanks
 
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Hi Mohiden. Pump ragging is the buildup of solids on the impeller, causing the pump to loose efficiency or to become blocked. Ragging refers to rags or other fibrous materials that people might flush down a toilet.
See for instance:
Eng-Tips
Google
 

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