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Low energy advanced wastewater treatment


Modular wastewater solutions for applications ranging from 1,000 GPD (4 m /d) to 100,000 GPD (400 m /d). 



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Low energy/ OPEX

Fast reduction of TSS, COD/ BOD and micro pollutant levels

Simple & easy to use

Compact / small footprint

Pictured Above: nrPUR     UF Membrane Filtration Module






The nrPUR    Membrane platform is a low-energy, self-cleaning ultrafiltration (UF) system for the treatment of low- to high-strength wastewater to high-quality discharge or reuse standards. The technology is highly flexible and suitable for both domestic and industrial wastewater, from a wide range of applications that include hotels & resorts, small communities, craft breweries, wineries, dairy and other wastewater. Configured around a series of modular process building blocks, nrPUR     easily integrates into advanced biological treatment systems (i.e. Membrane Bioreactor (MBR), MBBR, MABR, etc) to provide effective TSS & BOD5 reduction of >95% on wastewater streams from 300 mg/L to 10,000 mg/L, producing safe, reuse-quality water. When combined with our advanced polishing technologies the nrPUR     system can treat trace micro pollutants (e.g. Phosphorus, Ammonia, etc) to safe discharge levels.

The nrPUR     UF membrane racks are submerged in the water to be treated and connected to the permeate extraction system. All suspended solids and micro-organisms larger than the membrane pore size, typically less than 0.1 µm in size, will be rejected by the membranes and only clean, solids-free water will be discharged as permeate. The permeate can then be discharged, or sent for reuse or further polishing steps.

On a continuous basis, air is bubbled from a grid of diffusers installed at the base of the nrPUR     racks, acting as a scouring mechanism to reduce the potential for biofouling on the surface of the membrane and to enhance the mixing of the biomass within the membrane tank.

A fully automated system, the nrPUR     platform is designed to provide many years of reliable, effective and affordable treatment of water & wastewater.



nrPUR    easily integrates into Membrane BioReactors (MBR) and other advanced wastewater treatment processes to produce the highest quality of reuse water


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Aerobic BioReactor

Aerobic digestion in a high-strength (10-15 g/L) Mixed Liquor environment

Primary Treatment

Equalization/Settling & Screening to remove solids and substances that can be detrimental to the membranes and digestion process


nrPUR    Membrane Filtration Module


Dead-end membrane filtration of the Mixed Liquor recycle stream

Pictured Above: nrPUR     Membrane BioReactor (MBR) with inground tankage


Typical System Results:

BOD5: < 5 mg/l

TSS: < 5 mg/l

TN: < 5 mg/l

TP: < 0.5 mg/l

Treated water suitable for reuse or discharge

Ultrafiltration (UF) membranes act as a physical barrier to suspended solids and micro-organisms

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Pictured Above: nrPUR     UF Membrane Rack


nrPUR     Pre & Post Treatment Solutions


In addition to our Submerged UF Membrane solutions for wastewater treatment, Enereau also has wide range of options for both pre- & post-treatment. These solutions include pH adjustment, pre-screening (fine screen, floatation, etc) to final polishing of reuse water with UV disinfection, carbon filtration, etc. Whether deployed as stand-alone units to achieve municipal discharge targets or as a complete treatment platform to achieve onsite reuse our smart modular technologies can help your site achieve its wastewater and water reuse objectives.


Pictured Above: Rotary drum screen to remove fine particles ahead of downstream treatment

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Pictured Above: pH adjustment system for a regional beverage producer

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Pictured Above: Pressurized UF membrane skid for the treatment of grey water for onsite reuse

Aerial View of Suburban Street
Hotel Pool
Industrial Building
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