UltraFlux

UltraFlux for high-solids streams.

Separate clarified water and concentrate solids. Crossflow ultrafiltration for digestate, industrial wastewater and thickening ahead of dewatering.

Outside-in0.04 µmDigestateAlgae thickening
Separation principle

Permeate inside. Solids in recirculation.

Water flows outside the membrane. Permeate passes through its pores to the inside; retained solids concentrate in the recirculation loop.

Crossflow carries deposits away and backwashing helps restore permeability. The design matches production, concentration and cleaning to your wastewater.

UltraFlux™ circuit with tank, pump, outside-in membrane, solids return, permeate, pressure control and CIP connections.
Integration schematic. Materials, pressure relief, interlocks and sequences are defined for each project.Enlarge diagram
Modules and operating conditions

Specifications for selection.

UltraFlux V8 / V10 reference specifications
ParameterV8V10
Active area10.7 m²35.8 m²
Module dimensionsØ 8 inches × 1.5 mØ 10 inches × 3 m
Membrane materialPVDF / PESUPVDF / PESU
Nominal pore size0.04 µm0.04 µm
Crossflow velocity0.5–2.0 m/s0.5–2.0 m/s
Stated maximum TMP207 kPa (2.07 bar)207 kPa (2.07 bar)
Operating pH5–125–12
Operating temperature5–60 °C5–60 °C

The limits in the table do not define a simultaneous operating point. Permeate flow, recovery and sustainable concentration are determined with the actual feed.

Solids and oils: interpreting the published maxima

The range accommodates up to 150,000 mg/L TSS or up to 50,000 mg/L emulsified oil, depending on the application. These are selection references, not a guarantee of simultaneous operation or permeate flux. Viscosity, fibres, particle size, chemistry and fouling govern feasibility and are assessed for each application.

Specific energy

Compare systems at the same duty.

Lower recirculation velocity reduces pumping demand.

The open geometry and recirculation circuit aim to reduce pressure losses. Specific energy consumption depends on concentration, viscosity, sustainable flux and hydraulic configuration.

The anaerobic digestate comparison used 15,000–18,000 mg/L TSS and the same permeate flux per unit area. It is a test reference, not a guaranteed saving for every feed.

UltraFlux in operation

Success stories

01 / UltraFlux V8New Hampshire, USA · 125 m³/day · 2019

Smuttynose Brewing Company

Brewery digestate

75% less energy

Versus tubular UF, for the same volume of water over a six-month comparison.

02 / UltraFlux V8Brignano, Italy · 30 m³/day · 2019

Brignano

Chicken-manure digestate

More than 4.5% TSS

Sludge concentration before dewatering, with separation of clarified permeate.

03 / UltraFlux V8Nova Scotia, Canada · 114 m³/day · 2020

National Research Council Canada

Algae thickening

More than 90% less time

Reduction in centrifugation time through an upstream concentration stage.

04 / UltraFlux V10XLContainerised unit, multiple sites · 946 m³/day · 2022

NLB H2O

Saline water after softening

120,000–130,000 ppm NaCl

Precipitate separation in oil and gas wastewater, within a transportable platform.

SUCCESS STORY / INDUSTRIAL WATER

Smuttynose Brewing Company

Brewery digestate

New Hampshire, USA
Approximate capacity
125 m³/day
Module
UltraFlux V8
Commissioned
2019
01

The challenge

Anaerobic treatment of brewery wastewater needed to retain biomass and extract a clarified liquid stream. Separation had to preserve digester capacity and directly handle digestate containing approximately 1–2% suspended solids.

02

The UltraFlux solution

Following a one-and-a-half-month pilot at a nearby brewery, an UltraFlux V8 system was installed with direct digestate feed. Permeate went to discharge, while concentrate returned to the digester’s anti-foaming nozzles.

  1. 01Anaerobic digester
  2. 02UltraFlux V8
  3. 03Permeate + biomass return
03

Results and integration

75% less energy

Over six months, performance was compared with a tubular membrane system treating closely comparable wastewater. UltraFlux used 75% less energy to process the same water volume. This figure applies to that comparison and its operating conditions.

  • Up to 4% TSS
  • Biomass return to the digester
  • Direct digestate treatment

UF separates solids and colloids. Soluble organic matter can remain in the permeate; its destination is defined for the complete treatment process.

Discuss a similar project
SUCCESS STORY / INDUSTRIAL WATER

Brignano

Chicken-manure digestate

Brignano, Italy
Approximate capacity
30 m³/day
Module
UltraFlux V8
Commissioned
2019
01

The challenge

Anaerobic digestion of chicken manure produces a nutrient-rich stream with high COD and solids loads. The process needed to preserve biological stability and digester capacity, obtain a liquid stream for algae cultivation, and reduce the volume sent to dewatering and drying.

02

The UltraFlux solution

After a comparative pilot, UltraFlux V8 was integrated between anaerobic digestion and dewatering. The system directly receives digestate and separates it into clarified permeate and concentrated sludge, which exceeded 4.5% TSS before the mechanical stage.

  1. 01Anaerobic digestion
  2. 02UltraFlux V8
  3. 03Dewatering / permeate
03

Results and integration

More than 4.5% TSS

Upstream concentration reduces the water handled by dewatering. Dewatered solids can follow a fertiliser route; permeate retains nutrients of interest for algae cultivation or blending with irrigation water.

  • Lower hydraulic load on dewatering
  • Nutrient-rich permeate
  • Fractions with recovery pathways

Each recovery pathway depends on stream composition and the requirements of its intended use. UF alone does not remove dissolved nutrients.

Discuss a similar project
SUCCESS STORY / INDUSTRIAL WATER

National Research Council Canada

Algae thickening

Nova Scotia, Canada
Approximate capacity
114 m³/day
Module
UltraFlux V8
Commissioned
2020
01

The challenge

Light penetration limits algae concentration during cultivation. Sending this dilute stream directly to centrifugation demands more time, energy and labour; extended exposure can also damage cells. An intermediate concentration step was needed before mechanical separation.

02

The UltraFlux solution

Following a successful pilot, a standalone UltraFlux V8 unit was installed between photobioreactors and centrifuges. UF removes part of the water from freshly cultivated algae and delivers a more concentrated stream to centrifugation.

  1. 01Photobioreactors
  2. 02UltraFlux V8
  3. 03Centrifugation
03

Results and integration

More than 90% less time

Upstream thickening reduced centrifuge operating time by more than 90%. Fewer machines needed to run, reducing operation and cleaning tasks as well as the energy needs of that stage.

  • Fewer centrifuges in operation
  • Less monitoring and cleaning work
  • Commissioning in one day

The reduction of more than 90% refers to centrifugation time; it does not represent an equivalent reduction in total plant energy consumption.

Discuss a similar project
SUCCESS STORY / INDUSTRIAL WATER

NLB H2O

Saline water after softening

Containerised unit, multiple sites
Approximate capacity
946 m³/day
Module
UltraFlux V10XL
Commissioned
2022
01

The challenge

The project needed to combine lime softening with effective solid–liquid separation within a containerised footprint. Evaluated alternatives did not jointly meet retentate concentration, footprint, sustainable flux and energy requirements.

02

The UltraFlux solution

Following a successful pilot, UltraFlux V10XL replaced modules in an existing UF system, using the available mounting positions. Softening precipitates dissolved constituents, and UF then separates the resulting solids from the liquid phase.

  1. 01Lime softening
  2. 02UltraFlux V10XL
  3. 03Clarified permeate
03

Results and integration

120,000–130,000 ppm NaCl

Feedwater contained approximately 120,000–130,000 ppm NaCl. Clarified permeate met the site’s discharge requirements. The containerised arrangement facilitates relocation and replication of the platform in other projects.

  • Retrofit in existing module positions
  • Transportable, repeatable platform
  • Permeate meeting site discharge requirements

UltraFlux separates softening precipitates; it does not desalinate the water. Potential permeate reuse routes require a specific assessment.

Discuss a similar project
Process fit

Clarify, concentrate and prepare the next stage.

Digestate

Retain biomass and concentrate solids before return or dewatering.

Agri-food industry

Separate solids and colloids from production streams.

Industrial wastewater

Clarify streams containing solids, colloids or pretreatment precipitates.

Preconcentration

Concentrate the retained fraction before downstream treatment; define the permeate destination as well.

Dewatering

Increase feed concentration ahead of centrifuges or other equipment.

Retrofit

Check footprint, manifolds, pumping and controls before replacing existing modules.

Selection engineering

Design flow starts with your wastewater.

View design inputs and sizing method

Membrane area is calculated from permeate flow and sustainable flux: A = Qp/J. J must represent the actual water, design concentration, temperature and cleaning regime.

System selection inputs
InputRequired information
HydraulicsAverage/peak flow, operating hours and load variability.
FeedTSS, total solids, total/soluble COD, oils, fibres, viscosity, pH and temperature.
Separation targetPermeate quality, retentate concentration and destinations for both streams.
InstallationFootprint, utilities, cleaning, automation and process interfaces.
Illustrative balance

Two streams. One solids balance.

Mass-balance example with complete solids retention and equivalent densities: 5 m³/h at 2% solids → 2.5 m³/h at 4% + 2.5 m³/h permeate. This illustrates mass conservation; it does not predict flux or recovery for your wastewater.

See digestate integration guidance
Engineering questions

What it separates and how it is sized.

Does it remove salts, ammonium or all COD?

UF retains solids and colloids according to their characteristics; salts, ammonium and much of the soluble organic matter can pass into the permeate. Final quality and any downstream polishing are defined from analysis.

Does it need polymers?

The membrane provides the separation barrier and does not need polymer as its retention mechanism. Pretreatment, cleaning or downstream stages may require chemicals depending on the process.

How much permeate does each module produce?

There is no single flow rate for all feedwaters. Output is calculated from active area and sustainable flux validated for the wastewater. The proposal defines net production, backwashing, cleaning and availability.

Can it replace tubular UF?

A retrofit assessment checks connections, required area, pump curve, recirculation, backwashing and controls. Retrofit references do not imply universal interchangeability.

Your next step

Request a technical proposal.

Send us your flow rate, water analysis and treatment objective.

We will review equipment selection, integration and the data needed to size your project. You can attach your water analysis or P&ID to your email.

Send project detailscomercial@neptunoes.comThe button opens your email with an enquiry template.