AHURA AQUAWater Systems
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Ultrafiltration System

Hollow-fibre membrane Pre & post-RO Bacteria & virus barrier Fully automated

Ahura Aqua designs and manufactures high-performing ultrafiltration systems, customised to each client's water quality and capacity — a perfect fit for pre-filtration to RO in wastewater recovery, pre- & post-UF stages in Purified Water and WFI streams, and concentration duties across food, beverage and dairy.

With a hollow-fibre membrane working from 60 kDa down to 4 kDa, our UF systems deliver crystal-clear product water and a dependable barrier to bacteria and viruses.

Application Spotlight · Pharma
Membrane WFI — Beyond Distillation
Special membranes with a molecular cut-off of 6 kDa or 4 kDa, placed downstream of a Purified Water generation system, produce WFI-quality water. Compared with the multi-column distillation route, generating WFI by membrane separation is a proven energy saver and a far more sophisticated method.
Capacity Range
38 – 3928
m³/day*
Membrane Pore Size
0.01 – 0.10
micron
MW Cut-Off
60 – 4
kDa
Feed Turbidity
≤ 300
ppm
Feed TSS
≤ 100
mg/l
Where UF Sits Larger pores → smaller pores
Ultrafiltration is the same family as micro- and nano-filtration — the membranes differ only in the size of molecule they block. A loose pre-UF (RO-pretreatment class — Toray HFU, Veolia ZeeWeed) handles the front end; a tight post-UF polishes down to 10 kDa for WFI.
MF
Micro-filtration
~0.1 – 10 µm
Suspended solids, large bacteria
UF · Pre Pre-RO
Pre-Ultrafiltration
0.02 – 0.03 µm · ~100 – 150 kDa
Suspended solids, colloids, bacteria & viruses
NF
Nano-filtration
~0.001 µm
Divalent ions, organics
RO
Reverse Osmosis
~0.0001 µm
Dissolved salts & ions
UF · Post WFI polish
Post-Ultrafiltration
~0.01 µm · 10 kDa
Macromolecules, pyrogens & endotoxins
Working Principle
Feed (Pre-Filtered)
Particulate, large TSS & organics removed upstream
→
Hollow-Fibre Membrane
Pressure-driven filtration
MW cut-off 60 – 4 kDa
→
Permeate
Crystal-clear product water
Retains bacteria, viruses & colloids
A robust pre-filtration stage is essential — it readies the concentrate for ultrafiltration at maximum efficiency and protects membrane lifespan.
Advantages
A-01
Supercritical < 1 ppm TSS
The natural step beyond multimedia filtration where < 1 ppm TSS is required — e.g. chrome plating, with a post-UF stage after RO for make-up water.
A-02
Crystal-Clear Product
0.01 – 0.10 µm pores give superior turbidity removal, producing crystal-clear permeate.
A-03
Bacteria & Virus Barrier
Effectively eliminates a significant classification of bacteria and viruses.
A-04
Protects Downstream RO
Reduces fouling frequency in the downstream RO membrane separation system.
A-05
Low Energy & Footprint
Low-cost, space-saving modules deliver critical filtration rates at lower energy consumption.
Industrial Applications
Purified Water & WFI
  • ✓ Pre- & post-UF in PW / WFI streams
  • ✓ 6 / 4 kDa membranes make WFI-grade water
  • ✓ Energy saver vs multi-column distillation
Wastewater Recovery
  • ✓ Pre-filtration to RO in recovery trains
  • ✓ Delivers a stable feed to membrane separation
Chrome Recovery & Plating
  • ✓ Post-UF after RO for make-up water
  • ✓ Supercritical < 1 ppm TSS duty
Dairy Processing
  • ✓ Whey protein concentration
  • ✓ Lactose production
  • ✓ New-gen preferred method
Food & Beverage
  • ✓ Natural fruit-juice concentration
  • ✓ Low opex / capex vs evaporation
  • ✓ Fully automated process
Textile & Polyester
  • ✓ Process & recovery filtration duties