
Elmosa, USA
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Self-flow Management

Robust stable durable Structure

Withstanding Cat5 Hurricanes in
the Caribbean since 2006

Dredging turbidity modeling using the US EPA VP MU3
The InvisiHead diffuser efficiently disperses mining and dredging turbidity, click here
Seawater desalination brine dispersion modeling
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Cooling Water
Dispersion Modeling using US EPA VP UM3Efficient cooling water dispersion can be achieved by
the InvisiHead diffuser fixed at a selected sea bottom location to operate as
an outlet to thermal power plants, oil refineries or any warm water disposing
systems. The 5m IH diffuses, disperses, spreads, mixes and dilutes water as
shown in the US EPA VP UM3 model below.
Heat decays from 41○C to 33.46○ C
at 0.02m from the diffuser and reaches the required dilution of 17, the
required level just after leaving the diffuser; it drops to 33.01○C at the edge
of the ZID or acute zone 30m away from the diffuser; it reaches ambient
temperature of 33○ C at 200m away from the diffuser or 100m before reaching the
edge of the Allocated Impact Zone (AIZ).
InvisiHead/Wedge wire screen Comparison
InvisiHead intake & outfall for Oil &
gas platforms and LPG terminals
Omni directional round surround up-sideways and
down 360° outfall

Elmosa complete intake system with site
recognitions capabilities integrated
Elmosa intake and outfall
The InvisiHead Intake and Outfall Intake
Videos
Outfall Videos

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Comparing Elmosa
outfall to linear pressurized diffuser systems
Outfall 3-D dispersion, mixing & dilution
management
High dilution ratio is reached near the outfall
Required dilution reached at the start of the
near filed mixing zone
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The NatSep sediment separation and flow control
basin
InvisiHead built-in anti biofouling
injection system
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Elmosa
Seawater Intake System
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Elmosa
Seawater Outfall System
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The InvisiHead is environmentally smart
responsible proactive non-reactive; excludes sediment, marine
life and debris; durable, reliable, selective seawater
intake & outfall system.
It
is Self-Reliant, no O&M, no moving parts, no spare parts needed, no
backwash or air burst or any kind of operation or
maintenance work required.
It is the only
intake system that
makes
money and pays
back its capital costs
$0 PAID FOR O&M, O&M-FREE, LOW CAPITAL COST, SHORT PAYBACK
PERIOD, NO DOWNTIME. SEE
This!
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Why
should you install the InvisiHead?. Why
South
Wales
Next
Generation 1,000,000 m3/d RO plant consultant selected the IH system.
This
virtually unlimited flow capacity intelligent site-recognizing intake
head holistically protects
aquatic life; no impingement or
fish mortality; it is unattractive to
aquatic organisms, sediments, seaweed, or debris; it
is selective and delivers clean water; it utilizes local marine
currents to sweep away
and into the ambient again seaweeds, fish-small and young, jellyfish,
sediments
and debris if they enter the InvisiHead. The no-return flow is at the
outlet. It is out of phase of the major flow channel by 90 °thus providing safe passage to marine life
to get back into the
environment again through the opposite end. In its return to the
ambient, flow is in phase with the
local currents direction thus all types of onshore mechanical
screening-fixed or traveling or both-are no longer
required. Negligibly
low head loss at about 0.00017m or a pressure drop of 0.017mb means
almost 0$
spent on energy. Nearly all pumping
energy goes to overcome friction inside the intake pipe. As an
outfall, the InvisiHead safely discharges, disperses, mixes and
dilutes RO brine, cooling water, and wastewater.
The discharges reach equilibrium and disappear into the ambient within
the vicinity of the outfall at the beginning of the near field mixing
zone. The
InvisiHead operates in
full compliance with
the US EPA Section 316(b) of the Clean Water Act governing the use of
cooling water at power plants and industrial facilities (the Final Rule).
It Protects biodiversity values of the site and avoids impacts on
native vegetation or fauna. No ecological adverse effects are
associated with The InvisiHead.
The genuine and original
Site-Specific Selective InvisiHead and NatSep technologies reside here
at American Eco Systems
Starting January
2013 the InvisiHead flow transition
through the sequential 4 flow phases was upgraded to further
improve flow quality and drastically reduce
or eliminate flow of sediments or seaweed if present in the water
column; InvisiHead flow velocities:
1. approach is 0.002m/s (0.0066 fps), 2. inlet is 0.09m/s (0.295 fps),
3. outlet is 0.11-0.12m/s (0.36-0.39 fps). No environmental adverse
impacts are associated with
seawater intake of cooling water or concentrate discharges; low on SDI. Ideal
for RO systems. Site and application recognition enables the InvisiHead
to fine-tune its flow-management operation and reduce
SDI.
The_InvisiHead_makes_money
Operation-free.
Maintenance-free intake system, the InvisiHead
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Payback period
in the form of O&M cost savings is short; savings in capital
and O&M expenses are high |

See
Cost_Comparison_between_the_InvisiHead_and_wedge-wire_screen_intakes
and InvisiHead
technical and cost comparison with onshore traveling screens
NO MORE TROUBLES: Just
turn-on the seawater pumps at the pump house and relax. No more clogging. No
more pressure drop. No
more alarms. No more backwash or air
bursting. No more dead fish or any of the aquatic life. No more marine growth or sediments settling in the
intake pipe. Simply, no more worries and no more
operation or maintenance. All
remain in DAY 1 condition for decades to pass.
Milestone
dates: 1981/1982
the InvisiHead was conceived, researched and developed at the
reputed
St. Anthony Falls Hydraulic Lab of the University of Minnesota; 2002
the InvisiHead has become a BTA as per the US EPA designation; 2009
Australian Ministry of
Environment and Australian EPA approved the InvisiHead outfall to be
installed in
Australian
waters; 2009 an Australian mining company selected the InvisiHead for
their RO plant intake and brine discharge; in 2010 a British consulting
group selected the InvisiHead to serve Sydney's Next Generation's one
million m3/d RO desalination plant to supply 2.4 million m3/d of
seawater
and
discharge 1.4 million m3/d; 2013
InvisiHead structure-embedded site and
application recognition ability was further fine-tuned to better
improve flow management; 2014_water_enters_InvisiHead at 0.09m/s
and
leaves it at 0.11-0.12m/s to allow supremacy to marine currents to
flush out any fish, sediments, or seaweeds if found.
The following images show an Elmosa seawater intake system designed for
a coal-fired power plant in SW Africa. The 450m 1600mm HDPE Intake pipe
system employs the
EVE principle to operate safely and deliver 17,000 to 34,000 m3/h of
good quality cooling water
The intake system is entirely located in a 500m-wide strip located
within the surf zone. It has
to be stabilized well and protected against wave action and excessive
scouring.

Anchoring 450m
1600 HDPE pipeline by
ballast blocks
first

Riprapping
Enlarge

Armoring for long term stabalization
An InvisiHead system network supplies good quality raw seawater to a
1,000,000m3/d RO desalination plant

Modeling
Brine Discharge. A reverse osmosis plant InvisiHead diffuser system
discharges,
disperses, mixes and dilutes 90,000ppm brine down to less than 4.6%
over the 45,000ppm ambient in 8.3m away from the discharge point.

Dispersion
of brine discharge from seawater reverse osmosis desalination plants.
Reverse osmosis RO concentrate dispersal is modeled to demonstrate the
InvisiHead brine diffuser performance
Cooling Water Discharge. An InvisiHead diffuser system network
discharges, disperses, mixes and
dilutes 324,000m3/h of a 2 GW thermal power plant cooling water
discharged with 40°C and cools down to the ambient of 32° in 10m

Power Plant Cooling Water Dispersion Modeling using the US EPA VP
The
American Eco Systems introduces the Elmosa offshore seawater
intake and marine outfall systems - the InvisiHead. InvisiHead
flow streamlining is improved in 2012 for better
performance. It's specially
fit for RO
systems due to its high reduction of suspended matter resulting in a
lower SDI
Click here to enlarge
We
are
seawater intake system consultants as well as InvisiHead designers and
fabricators. The InvisiHead is
a selective water intake system, it lets water in and leaves
sediments seaweed and marine life behind. It is a robust stable
structure built
to
remain in
full operation even during stormy conditions. It is designed and built
to
withstand SS
Cat 5 hurricanes. It should be installed off the surf zone.
Elmosa
revolutionizes the operations
of seawater withdrawal and discharge. Flow streamlines fade-in
in the intake or fade-away into the ambient in the outfall

See this

See
this; also see the Australian EPA
Assessment No
1677-Public Environmental Review
S
In
2012 AES updated and enhanced the flow
streamlining
of
the InvisiHead
Intake and outfall systems and improved the hydraulic tuning of the
flow
streamlines within the approach, entrance, and outlet phases in order
to
increase the
degree of exclusion of marine life, sediment and debris. Avoidance: The
change in
flow pattern created by the InvisiHead triggers more avoidance
response mechanisms in fish both juvenile and adult, thereby avoiding
their inflow. The structural
integrity of the InvisiHead has been also reinforced to stand
up to
G5 hurricane force. The IH systems are made of high grade thick
stainless
steel plates to preserve structural integrity of the systems and remain
in
full
operation throughout the structure's lifetime of.

For
the proper design of the seawater intake and outfall, the InvisiHead
system has
been developed to be the system of choice that naturally handles the
flows in both
directions. The
InvisiHead intake and outfall systems operate to remain in full
compliance with the
requirements of Section 316(b) of the US EPA Clean Water Act. Both
systems -the intake and outfall-meet
and exceed the requirements by 40%. The Act requires an intake entrance
velocity not
to exceed 0.15 m/s. The InvisiHead's is 0.09 m/s. The
InvisiHead supports
biodiversity, protects and preserves the ecosystem. It
is environmentally friendly in both directions: water withdrawal and
discharge.
American Eco Systems takes environmental
protection and preservation seriously as a top priority that is
integrated into system
design and operation.
The
InvisiHead system works as a superb marine outfall. The dispersion
process of
effluents is unmatched by any other technology including the
widely-used linear
riser - diffuser systems. Dilution
and blending occurs within a short distance from
the radial InvisiHead pointsource.
AES has secured the outfall design to remain in full compliance for
many
decades to
come. Both the Australian Ministry of Environment and EPA
favored
The InvisiHead intake and outfall over the existing linear diffuser
types to be
installed in Australian offshore waters. See the image below and also
see http://www.amecosys.com/elmosa/Visual_PLUME_outfall_simulation_runs,_Australian_project.pdf,
ABTP-Outfall-Modeling.Report ,
and
https://encrypted.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=16&cad=rja&uact=8&ved=0ahUKEwiAj67v54bYAhXEWRQKHTwWC7A4ChAWCE8wBQ&url=http%3A%2F%2Fwww.epa.wa.gov.au%2Fsites%2Fdefault%2Ffiles%2FPER_documentation%2FA1677_R1340_PER_PER_Rev1_090227.pdf&usg=AOvVaw1d5vHKaf_FrwyZFkUun-Vp


Flow
velocities into the
InvisiHead intake head and out of the InvisiHead outfall:
- 0.002
m/s
max. (0.006 fps)
<5 meters (15 ft) away from entrance, approaching or dispersing,
- 0.03 m/s
max. (0.1 fps) 1.0
meter (3 ft) away from entrance, approaching or dispersing,
- 0.09 m/s
max. (0.3 fps) at the circumference,
entering or releasing,
- 0.11-0.12
m/s max. (0.4-0.5 fps) at InvisiHead intake
outlet.
Head
loss at the InvisiHead
approaches zero at 0.00017m. It is engineered to
control and
drastically reduce or eliminate the inflow of debris, the
ingress of
fish, mussels and other marine life and virtually uses no pumping
energy.
InvisiHead
system
for use as pump strainers, intakes, or discharge marine outfalls in
offshore uses and in oil and gas platforms
The
InvisiHead operating as a seawater intake or a pump strainer
The
InvisiHead operating as a marine outfall
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