lake presentation
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Lake Aeration Systems
by PNW Inc. & ADS
For more information, visit us at http://www.paradisenw.com
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OUR LAKE NAINITAL
Highly eutrophic/ polluted nutrient rich water body withblooms of algae for major part of the year
The transparency in the lake is very poor
Hypolimnion is devoid of oxygen
Concentrations of ammonia, hydrogen sulfide andmethane very high
Blue green algae predominates in the lake
Look bottom becomes anoxic during the time ofoverturn
Lake experiences mass mortality of fishes especiallyduring winters
The water of the lake is not suitable for drinkingpurpose
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Solution
The aeration of the lake is the only remedy
to control the pollution and thus restore thelake ecosystem
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Benefits of Aeration
Increases transparency of lake Decreases the concentrations of toxic gases like
carbon dioxide. Ammonia, hydrogen sulphide andmethane
Decreases the production of algae thus increasing thetransparency of lake water
Replaces the undesirable flora and fauna and leads tothe development of desirable life forms in the water.
Creates conditions suitable for the growth and
breeding of environment friendly fish species likemahseer
Increases the concentrations of dissolved Oxygen inthe lake.
Restores the lake ecosystem completely.
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Division of Basins & Placement of Discs
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Compressor House
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COMPRESSOR
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MANIFOLDS
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Aeration DiscAeration DiscSurgical die cut air
releases in U/vresistant tubing.
Internal pressure
drop>1 PSI to
overcome
undulating bottom.
Each air releaseemits 5 micro
bubbles per second.
Thats over 1 Billion
Bubbles Per day
Coated aircraft cablehas a nominal
strength of 1,700
pounds
Durablestainless
steel welded
frame is
light weight
and
corrosion
resistant inany water
Reusable
compressiontube connector
comes with
plastic gripper
ring rated at
220 PSI
The tiny bubble size (less than 1/8" diameter)
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INSTALLATION OF DISK IN LAKE
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Non Aerated Pond Kinetics
In absence of oxygen:
Fish are limited to the Epilimnion
layer.
Anaerobic bacteria slowly digest
sludge.
Nutrients stay in the water column.
Results: Poor water quality
High BOD, algae, odours, unhealthy sludge,
dead fish, poor water clarity
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What Bottom Oxygenation Does
IN THE PRESENCE OF OXYGEN:
Organic waste from mans activities
becomes food.
Bacteria, Aquatic Insects Snails,
Worms, and Fish convert unwantedwaste.
Water Quality dramatically improves:
BOD reduction, Odor elimination,
reduced algae, better water clarity,
nutrients reduction, thermocline
elimination.
The living cycle is created through
bottom oxygenation which is the vital
link for sludge digestion and its build
up.
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Natures Scavengers
By bringing oxygen to the bottom,A
DS
finebubble aeration systems allow new aerobic
scavengers to feed on the sludge, eliminating
it the natural way
These scavengers are eaten by bigger
predators and ultimately predated on by man,
completing the ecosystem cycle.
When oxygen exists along the bottom of a lake or reservoir, important biota,all feeders, can live, eat and eliminate the organic sludge the natural way.
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Introducing oxygen
Recognized leader in aeration systems from small
lakes to giant reservoirs for over fifteen years.
Air is introduced artificially to die-cut, bottom laid
tubing using large ADS Disk module.
Fine bubbles emitted from the tubing form a curtain
of gently rising air which will pump the dead water
to the surface without lifting sediment. This is called
LAMINAR FLOW.
Highest pumping rate in the industry (22MGD @ 15
of water depth per LTC diffuser).
This circulation of oxygenated water virtually
eliminates odors & anaerobic conditions. It promotes
growth of bacteria, snails, worms and fish for the
FOOD CHAIN.
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Outstanding results
Typical observed water testing shows:
Increased dissolved oxygen concentrations
throughout the entire water column.
Increased availability of habitat for all fish
species (warm and cold).
pH is homogenous and stabilized.
Temperatures are homogenous throughout
the entire water column.
Illustration of nutrient oxidation by ADS fine bubble aeration
(from left to right, highly oxidized, slightly oxidized, initial sample)
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Worldwide Famous ProjectsBaima Canal, ChinaWillow Creek, USA BearCreek Reservoir, USA
Lake Nainital, India Established in 1965 (formerly Hinde Engineering Company).
Recognized leader in aeration systems from small lakes to giant reservoirs forover fifteen years.
Successful design and application of over one thousand different domestic andwastewater systems as well as reservoirs, lakes, aquaculture and marina icemelting systems.
Research and Development department devoted to bringing state-of-the-arttechnology into production for you.
Devoted exclusively to the fine bubble aeration industry, we have no otherconflicting business interests.
ADS employees have a combined total of over seventy-five years experiencein the fine bubble market place.
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