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 to flux and module selection to skid, backwash and CEB design to supply, erection, commissioning to 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 to two working days.