InvisiHead/Wedge wire Comparison
InvisiHead outlet on top platform-fitted
InvisiHead outlet on top anchored to sea floor
Omni directional outfall
Elmosa complete seawater intake system
Plan of elmosa intake and outfall
Elmosa outfall system
Outfall 3-D dispersion & dilution management
High dilution ratio is reached near the outfall
Required dilution reached at the start of the near filed mixing zone
The NatSep sediment separation basin
InvisiHead built-in anti biofouling
Why should you install the InvisiHead?. Why South Wales Next
Generation 1,000,000 m3/d RO plant consultant selected the IH system.
|The InvisiHead is
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
maintence work. The only water intake system
that pays its capital costs and makes money
$0 PAID FOR O&M, O&M-FREE, LOW CAPITAL COST, SHORT PAYBACK PERIOD, NO DOWNTIME. SEE This!
Potential Users: Power
and Desalination Plants, Petrochemical and Gas Complexes,
Refineries, Aquaculture and Fish Farms, Municipal Systems, HVAC, Etc.
virtually unlimited flow capacity intelligent site recognizing intake head holistically protects
aquatic life; no impingement or fish mortality; it is unattractive to
aquatic organisms, sediments, seaweed, or debris; it
is selective and delivers clean water; it utilizes local marine currents to sweep away
and into the ambient again seaweeds, fish-small and young, jellyfish, sediments
and debris if they enter the InvisiHead. The no-return flow is at the outlet. It is out of phase of the major flow channel by 90 °thus providing safe passage to marine life to get back into the
environment again through the opposite end. In its return to the ambient, flow is in phase with the
local currents direction thus all types of onshore mechanical screening-fixed or traveling or both-are no longer
required. Negligibly low head loss at 0.00017m or a pressure drop of 0.017mb means almost 0$ spent on energy. Nearly all pumping energy goes to overcome friction at 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 beggining 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 to
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
2013 the InvisiHead flow transition
through the sequential 4 flow phases have been upgraded to further improve
water quality and drastically reduce
or eliminate flow of sediments or seaweed if present in the water column; velocities:
approach 0.002m/s (0.0066 fps), inlet 0.09m/s (0.295 fps), outlet:
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.
Maintenance-free intake system, the InvisiHead
| 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.
the InvisiHead was conceived, researched and developed at the
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
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
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.
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
Click here to enlarge
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
full operation even during stormy conditions. It is designed to withstand SS
Cat 5 hurricanes. It should be installed off the surf zone.
2012 AES updated and enhanced the flow
Intake and outfall systems and improved the hydraulic tuning of the
streamlines within the approach, entrance, and outlet phases in order to
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
G5 hurricane force. The IH systems are made of high grade thick
steel plates to preserve structural integrity of the systems and remain
operation during the structure's lifetime of over 50 years. At American
Systems time freezes.
the proper design of the seawater intake and outfall, the InvisiHead
been developed to be the system of choice that naturally handles the
flows in both
directions. The InvisiHead seawater
intake head. 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
and exceed the requirements by 40%. The Act requires an intake entrance
to exceed 0.15 m/s. The InvisiHead's is 0.09 m/s. The
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.
InvisiHead system works as a superb marine outfall. The dispersion
effluents is unmatched by any other technology including the
riser - diffuser systems. Dilution and blending occurs within a short distance from
the radial pointsource.
AES has secured the outfall design to remain in full compliance for many
come. Both the Australian Ministry of Environment and EPA
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, and ABTP-Outfall-Modeling.Report.
Flow velocities into the
InvisiHead intake head and out of the InvisiHead outfall:
loss at the InvisiHead
approaches zero at 0.00017m.
It is engineered to
drastically reduce or eliminate the inflow of debris, the ingress of
fish, mussels and other marine life.
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
for use as pump strainers, intakes, or discharge marine outfalls in
offshore uses and in oil and gas platforms
InvisiHead operating as a seawater intake or a pump strainer
InvisiHead operating as a marine outfall
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