Cartridge Filters CART
Absolute-rated polishing & membrane protection. Pleated or wound elements with absolute micron ratings — the final guard filter that protects RO membranes and high-purity systems.
System Schematic
Representative process-flow — configured to your streamUnderlying Technology & Scientific Principle
A cartridge filter uses cylindrical replaceable elements — pleated membrane, melt-blown depth, string-wound or sintered metal — to retain particles by surface sieving and depth capture. Absolute-rated elements provide a defined removal efficiency (typically 99.9% at the rated micron), making them the standard guard filter ahead of membranes and high-purity processes.
Working Mechanism
Feed water enters the vessel and flows from outside to inside each cartridge through the filter medium. Pleated elements maximise surface area for low pressure drop and long life; melt-blown depth elements grade fibre density inward to capture a broad particle distribution. Spent cartridges are removed and replaced — no backwash.
Separation / Removal Efficiency
Available from 0.1 µm absolute up to 50 µm nominal. Typical RO-guard service: inlet SDI15 5–6 polished to <3, with absolute removal at 5 or 1 µm to protect spiral elements.
Operating Principle & Parameters
Flux 1.5–3.0 m³/h per 10″ equivalent; clean ΔP <0.2 bar; change-out at 1.0–1.7 bar differential. Service life days to months depending on upstream conditioning.
Flow Rates & Volumetric Capacities
Multi-round housings (3, 5, 7, 12, 36, 78+ rounds of 10″–60″ cartridges) cover 5 to >1,000 m³/h on a single vessel.
Fluid Media Compatibility
Polypropylene, polyethersulfone, PTFE, nylon, glass-fibre and sintered SS in coded SS or duplex housings. Compatible with hot, sanitary, high-purity, chemical and saline service.
System Schematic & Process Integration
Mandatory 5 µm (or 1 µm) absolute guard immediately upstream of RO / NF / UF skids; final polish on demineralised water, condensate polishing and high-purity loops; gas / vent sterile filtration.
Options / Variations Available
Pleated vs. depth vs. string-wound; double-open-end vs. 222/226 sanitary connections; absolute vs. nominal; high-flow large-diameter elements for low cartridge count.
System Complexity & Automation Level
Low — DP-based change-out; integrity testing for sanitary / sterile duty. Easily monitored via differential-pressure transmitter to SCADA.
Applications & Performance Delivered
RO / NF / UF guard filtration
Absolute 5 µm protection of membrane elements against fines and biofilm shed.
High-purity & boiler-feed polishing
Final particulate barrier on demineralised, condensate and ultrapure water loops.
Sterile / sanitary process water
0.2 µm absolute pleated cartridges for pharma, food and beverage duty.
Contaminant Removal Profile
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