EnrgiStream

The EnrgiStream Nano Particle Graphene Modified Forward Osmosis Membrane

The next major development in water/wastewater treatment

Reduces the waste stream by up to 90%

By extracting water from the waste stream as clean water

Forward Osmosis is a natural process where clean water is attracted to a draw solution due to a difference in pressure (osmotic pressure).

Reduces the footprint of the treatment plant by up to 90%

Can liberate huge tracts of land used in conventional sewage treatment

Produces highly concentrated waste

The small volume of waste is cheaper and easier to process

Produces clean water

The clean water extracted from the wastewater can be recovered from the draw solution using reverse osmosis thus reconstituting the draw solution.

The water recovered is very clean as it has been filtered by two membranes.

EnrgiStream Nano Particle Graphene Modified Forward Osmosis Membrane

The Membrane is a graphene enhanced thin film composite (TFC) polyamide (PA).

The FO Membrane demonstrates a stable and high performance with simple backwash cleaning in the process.

The FO Wastewater system is simple to operate and maintain with low fouling and high durability and reliability.

The membrane operates at a flux in excess of 30LMH.

The Patented EnrgiStream Waste to Energy Process

Process Flowchart

Process

The EnrgiStream process converts sewage to renewable energy, potable water and fertiliser using forward osmosis.

Forward osmosis (FO) is a natural process where clean water is drawn through a semi-permeable membrane by a draw solution.

FO produces:

Highly concentrated sewage (having 90% of water removed).
Diluted draw solution.
An increase in pressure on the draw solution side of the membrane.

Potable water is extracted from the diluted draw solution using reverse osmosis (RO) to reinstate the strength of the draw solution.

The increase in pressure from the forward osmosis process improves the efficiency of the RO process.

Where sea water is used as a continuously circulating flow draw solution (by pumping sea water from the sea), the sea water, diluted by the clean water extracted from the waste, can then be returned to the sea (thus avoiding the need for the RO process).

The concentrated wastewater is fed into a digester to produce biogas which in turn is used to produce electricity and heat:

Electricity is used to supply the plant with the excess exported.
Heat is used to warm the digester to the operational temperature.

Module Diagrams

FO Modual Digestor

Environmental Advantages
As the EnrgiStream Waste to Energy Process is a closed loop process housed in a factory, no greenhouse gases escape into the atmosphere.

Unlike conventional sewage treatment systems, no treated effluent is released into the environment.

The concentrated waste stream is subjected to anaerobic digestion which produces:
- Methane which is captured as biogas.
- Heat.
- Fertiliser.
As the concentrated waste is not subjected to aerobic processes, no nitrous oxide (N2O) is produced. The nitrogen and phosphorus remain in the “digested material” produced by the digestor process which can be used as fertiliser.
Biogas Production
Using the biogas (captured methane) as a fuel dramatically reduces its climate impact by converting it into CO2, which is up to 34 times less potent as a greenhouse gas.

Biogas is considered to be a renewable resource because its production and use cycle is continuous and it generates no net carbon dioxide.

The production of biogas attracts carbon credits.
Adding Green Waste To The Waste To Energy Process
Supercharges the Waste to Energy digestion process which produces the biogas, heat and fertiliser.

Combining sewage with green waste reduces the time in which the green waste is broken down by up to 40%.

As a rule of thumb, if all sewage and green municipal waste produced by a city were subjected to the EnrgiStream Waste to Energy process, the process will produce sufficient energy as biogas to power all domestic and public lighting for that city.

Sewage treatment plants are ideal reception centres for green waste.
Uses Existing Technologies
The EnrgiStream Waste to Energy process uses existing technologies:
- Reverse osmosis modules re-engineered to use a forward osmosis membrane.
- Digestors.
- LNG storage tanks.
The only new factor is the EnrgiStream FO Membrane.

Applications

01

The EnrgiStream FO Membrane provides the key to its patented integrated sewage treatment and green waste management system

02

The patented system converts waste to:

pure clean water
the ultimate renewable energy (biogas produced by digestion, heat, osmotic power);
fertiliser

with no methane or nitrous oxide escaping into the environment

03

Make cities in arid/desert areas viable by providing pure clean water recycled from sewage

04

Can liberate huge tracts of land used in conventional sewage treatment

The EnrgiStream Nano Particle Graphene Modified Forward Osmosis Membrane

The Patented EnrgiStream Waste to Energy Process

Process Flowchart

Process

Module Diagrams

Environmental Advantages

Biogas Production

Adding Green Waste To The Waste To Energy Process

Uses Existing Technologies

Applications

01

02

03

04

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