There are two classes of membrane treatment systems low-pressure membrane systems (such as microfiltration and ultrafiltration) and high-pressure membrane systems (such as nanofiltration and reverse osmosis).

Low-pressure membranes, including microfiltration (MF) and ultrafiltration (UF), are operated at pressures ranging from 10 to 30 psi, whereas high-pressure membranes, including nanofiltration (NF) and reverse osmosis (RO), are operated at pressures ranging from 75 to 1000 psi


The Ultra-Filtration Membrane System from GWTs combines unequaled membrane strength with high permeability to create a system solution that provides exceptional effluent quality, meeting the most stringent requirements. This external ultra-filtration system is ideal for reverse osmosis pre-treatment plants, drinking water, industrial water, tertiary wastewater, and reuse applications that require low effluent suspended solids or phosphorus.


    • Strong multibore fibers
    • Large bore diameter means
    • PES membrane material resists fouling
    • Inside-to-out flow path
    • 0.02 µm ultrafiltration
    • T-rack assembly has small footprint
    • Prewired/pretubed feed skids


    • No fiber breaks
    • Low fouling and plugging tendency
    • No air scouring
    • Even, efficient backwash
    • 4 log virus removal
    • T-rack assembly is easily expandable
    • Easy to install


    • Grey water treatment
    • Final polishing filter for Sewage and industrial effluent treatment plant
    • Drinking water systems
    • Surface water treatment
    • Groundwater filtration
    • Industrial water treatment
    • Backwash water filtration


Desalination has proven the most significant and effective solution to meet the challenges of population growth and water scarcity in many countries. Reverse Osmosis is the most widespread desalination process because of its efficiency and adaptability to any capacities. Through continue R&D in membrane and technology improvement, costs of RO desalination has radically decreased, making this technology highly competitive.

Accepting customers environmental and economic constraints, GWT‘s team has been successful in providing solutions to water scarcity and pollution issues. Considering the inlet water quality and integrating the membrane technology in the entire treatment line, GWT has delivered customized and packaged solutions to ensure plant performance and high water quality.

Reverse Osmosis Systems to purify water by removing salts, contaminants and other impurities. It is also capable of rejecting bacteria, sugars, proteins, particles, dyes, and other constituents that have a molecular weight of greater than 150-250 daltons.  Energy Recovery Devices: Reverse Osmosis Desalination of sea water process operates under high pressure and the energy requirement is very huge. With an Energy Recovery Devices (ERD) when combined with desalination facilities will give a larger saving in energy expenses and improved desalination process efficiency. The pressure exchanger systems recover 90% of the energy, reducing energy demand by between 10-40% and therefore reducing operating costs.


    • Compact and modular RO blocks
    • Easy installation, operation and servicing
    • Specific selection possible from a wide range
    • High level of plant automation (Optional)


Membrane Bio-Reactor is a treatment tehcnology wherein both biological oxidation and membrane physical separation with membranes that are submerged in the biomass, either inside the bioreactor itself or in a separate tank. The membranes are submerged directly in the bioreactor or in a separate tank and filtration takes place by applying vacuum to the inside of the membrane. Membrane fouling is prevented by the flow of coarse air bubbles along the membrane surface or periodic back flushing.

Prerequisites for the application of submerged Membrane Bioreactors:

    • Wastewater should not be highly concentrated (i.e. household wastewater)
    • Wastewater that is well biodegradable
    • Higher flows (> 20m3/h)

One of the distinct advantages of submerged Membrane Bioreactors is their low energy consumption.Submerged membrane tank, part of a system treating leachate from a landfill.

The System

    • High biomass concentration
    • Low excess sludge production
    • Minimum space and weight
    • Low operating intervals
    • Stand alone system


    • Economically attractive
    • Compact
    • Trouble-free operation
    • Options for water reuse
      Fast delivery time 0M N
    • Certified by DNV (RMRS at request)

Special Applications

    • Reuse for technical applications (deck wash etc.)
    • Reuse for toilet flushing
    • Use of “extended” system for operating in zero-emission areas
    • Tailor-made executions
    • Also for Retro-fit


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