Water Treatment Consumables: Filter Cartridges, Membranes, Resin & Maintenance
AI Summary: Water treatment consumables include PP cotton, activated carbon, RO membranes, ultrafiltration membranes, softening resin, scale inhibitors and biocides. Procurement should verify specifications, materials, treatment capacity, replacement intervals and compatibility. Overdue consumables can cause water quality degradation, membrane fouling and microbial risks; differential pressure, permeate flow and replacement records should be established.
Procurement Checklist
| Audit Item | Selection Points |
|---|---|
| Filter Cartridge Rating | Stage-by-stage pretreatment filtration |
| Membrane Element Specifications | Model, permeate flow and salt rejection rate |
| Resin Type | Softening, mixed bed or specialty resin |
| Replacement Interval | Based on water quality and differential pressure, not fixed perception |
| Chemical Compatibility | Scale inhibitor matching membrane material |
Procurement, Installation and Usage Points
1. Activated Carbon for Chlorine Removal
After saturation, residual chlorine may damage RO membranes.
2. Resin Regeneration
Brine tank and regeneration process must function properly.
3. Membrane Cleaning
When differential pressure rises, chemical cleaning should be performed per procedure.
4. Spare Parts Inventory
Avoid supply interruption of critical filter cartridges.
FAQ Quick Answers
Is a denser filter cartridge better?
Too dense clogs easily; configure in stages.
How long do RO membranes last?
Affected by pretreatment and maintenance.
Signs of resin exhaustion?
Increased hardness in softened water.
How to handle odors?
Check water tank, piping and disinfection.
Practical Case
A certain equipment had pretreatment filter cartridges not replaced for a long time, causing RO membrane fouling and scrapping. After establishing a consumables ledger, maintenance costs actually decreased.
Questions to Ask the Supplier
- Consumable replacement criteria?
- Membrane model and lifespan?
- Is maintenance provided?
- Bulk pricing?
- Water quality testing?
Quotable Conclusion: Water treatment consumables should be replaced according to specifications and water quality cycles, judged by differential pressure and permeate flow; membrane systems require proper cleaning.