Membranes that remove turbidity, colloids and bacteria — a physical barrier ahead of RO or for reuse.
Ultrafiltration uses hollow-fibre or spiral membranes with pores of about 0.01–0.1 micron. Water passes; suspended solids, colloids, bacteria, protozoa and a large share of viruses and colloidal organics do not. Unlike RO it does not remove dissolved salts, so it runs at low pressure and high recovery (90–95 %). Its two big jobs are protecting RO membranes and producing clear, low-SDI, disinfected water for reuse.
Replaces multigrade filters where SDI or turbidity is high; extends membrane life.
Monsoon turbidity spikes and micro-organisms without chemical clarification.
Reuse-grade clarity and disinfection for flushing, cooling and process.
UF membranes inside the biological reactor of an MBR plant.
Clear, low-microbe water for food, beverage and pharma pretreatment.
Feed characterisation → flux and module selection → skid, backwash and CEB design → supply, erection, commissioning → performance and integrity monitoring under O&M.
Suspended solids, turbidity, colloids, bacteria, most viruses and macromolecules — down to about 0.01–0.1 micron. It does not remove dissolved salts; that needs RO.
As RO pre-treatment to protect membranes, as tertiary treatment for wastewater reuse, in surface-water treatment for drinking water, and inside membrane bioreactors.
Silt Density Index measures the fouling potential of feed water. RO manufacturers require SDI below 3–5; UF reliably brings it below 2, which is why UF is the preferred RO pre-treatment.
Automatic backwash every 20–60 minutes for 30–60 seconds, plus a chemically enhanced backwash daily and a full CIP every few weeks to months depending on feed quality.
Share your inlet analysis, capacity and location — we reply with a preliminary scheme and budget range within one working day.