The lifespan of anthracite filter media is influenced by multiple factors, typically ranging from 3 to 5 years. Through scientific management and regular maintenance, its service life can be effectively extended.
How to Determine When to Replace Anthracite Filter Media:
Signs include increased effluent turbidity, noticeably shorter filtration cycles, or slow recovery of water quality after backwashing-these may indicate media failure.
Check for visible reduction in media layer thickness or excessive breakage and pulverization of particles. If media loss exceeds 20–30%, replacement should be considered.
If increasing backwash intensity or duration fails to restore filtration performance, the media may have reached the end of its useful life.
If the media layer becomes compacted or hardened, leading to uneven water distribution and significantly reduced filtration efficiency, prompt replacement is necessary.
Measures to Extend Anthracite Filter Media Lifespan:
Control filtration velocity appropriately to avoid overloading. Regularly adjust backwash intensity and frequency to ensure thorough cleaning.
Use coagulation and sedimentation to reduce influent turbidity, thereby reducing the burden on the filter media and extending its life.
Periodically sample and test the physical and chemical properties of the media-such as particle integrity and bulk density-to detect issues early and take corrective action.
Choose appropriate specifications and quality grades of anthracite media based on actual water conditions to ensure compatibility with operational requirements.
When filtration performance declines, media loss is significant, or backwashing becomes ineffective, timely replacement is essential to maintain stable operation of the water treatment system. Proper media selection, optimized operation, and enhanced pretreatment are key to maximizing media lifespan.
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