This document summarizes the different layers of a lake - the epilimnion, metalimnion, and hypolimnion. It then discusses issues like eutrophication and lake pollution. Specific solutions proposed for Hussain Sagar lake in Hyderabad include quick shock treatments using chemicals like triozon F and CLO2, bottom aeration to oxygenate the water, and use of bio-enzymes and bacteria to naturally treat the lake. A step-by-step treatment process is outlined showing improvements within hours of application. The overall goal is to oxygenate, clarify and restore the lake water through eco-friendly methods.

2. S
Simple Solution for Lake Management

5. E P I L I M N I O N
The topmost and warmest
layer of water is known as the
Epilimnion layer. This layer
also contains the highest
quantity of oxygen compared
to the other parts of the lake.
This layer mixes thoroughly
withsurface winds and
provides fluctuations in
oxygen levels. The warm
temperatures and higher
oxygen makes this layer
suitable for a majority of the
flora and fauna species of
fish.

6. M E T A L I M I O N
The layer between the
epilimnion and
hypolimnion is called the
Metalimion layer. This
layer experiences a rapid
reduction in temperature
with depth (@ rate of 1
degree per meter). Since
the density of water also
changes with temperature,
the water does not easily
rise or sink in this layer.
The metalimion layer is
also known as the
thermcline layer.

7. H Y P O L I M N I O N The hypolimnion layer is the
lowest layer and is directly
beneath the metalimnion layer.
This water in this layer is much
colder and dense. The stagnant
waters of the hypolimnion
layer are too deep to be
significantly effected by surface
winds and currents. Water that
is remote from surface
influences has a relatively
small temperature gradient. In
eutrophic lakes, this lower
layer of water has no oxygen
and is loaded with toxic and
decaying materials. The
bottom of the lake is known as
the benthal.

8. E U T R O P H I C A T I O N
Ponds or Lakes that
support rapid algae or
plant growth are termed
“eutrophic” ponds.
Eutrophication comes
from the Greek work for
“over fed” and that’s just
what plants are when they
tend to grow to fast. Such
ponds are overly fertile
with plant food (mainly
nitrates and phosphates).

9. Lake Polutants

10. Dredging and de-silting –
De-weeding/hyacinth control or
removal (biological, chemical,
mechanical and manual measures,
bio-composting
Bio-remediation (Clean up with bio-
products - natural bacteria
breakdown, and aerators to churn
the lakes)
Introduction of composite fish
culture/larvivorous fish species to control
mosquitoes

11. Out in the deeper, or limonitic part of the lake the
plankton take over. Plankton is a term used to describe
those organisms that float freely in the open waters of the
lake. Included in this group are the zooplankton (animals)
and phytoplankton (algae). Fish, of course, also roam
around out here. In a more productive lake the area fish
have to roam around gets smaller and smaller as summer
progresses. Oxygen in the deeper waters becomes
scarcer as dead algae and other detritus rains down into the
hypo limnion. Most fish won't be able to survive in
dissolved oxygen concentrations less than 5 mg/L.

13. HUSSAIN SAGAR

14. Topography
• Basin Area : 240 km2
• Direct Catchment Area : 67 km2
• Shoreline Length : 14 km
• Maximum water spread Area : 5.7 km2
• Capacity : 27.18 million m3
• Average Depth : about 5m
• Inflow Nallas : Picket Nalla, Banjara Nalla,
• BalkapurNalla, and Kukatpally Nalla

15. Existing Problem
Highly Toxic
Abnormal Algae Bloom including Cyno bacteria
Pungent Smell
Bottom Slushy
Presence of other contaminants viz: Heavy
Metal, Salts, Bacteria etc.

16. What To Do
Rehabilitating
Preventing
Sustaining

17. Flash Objective
To Oxygenate & Oxidize
To remove odor by way of de-odorizing products.
To control the growth of Algae & Fungus.
To remove bio fouling.
To clarify the water column & Pond bottom.

18. Protocol -1
QUICK FIX PROGRAMME:
To treat in combination with Triozon F, CLO2
& CuSO4.
6 Shock Doses & 32 Maintenance doses.
To use high power chemical dosing pump
with elongated pipe for treatment @1 meter
above Pond bottom level. Floating Service to
be Supported by Dept.
Area of treatment to be spot decided subject
to contaminant level.

19. Protocol-2 {Bottom Aeration} The installation of a pond bed
aeration oxygenates the water at
the bottom, and eliminates the
hypolimnion by low cost, low
powered, continuous
destratifcation of the thermal
layers. The whole idea of aeration is
to get oxygen into the deep water.
Aeration with tiny air bubbles from
bottom up and circulation of lower
water layers helps to achieve
uniform levels of oxygen and
temperatures throughout the lake.
Once the lake or pond is full of
oxygen near the bottom, new insect
larvae, snails and other fish food
can begin to live at the bottom.

20. PROTOCOL-3 {BIO-ENZYME}
A good lake is one, which
contains fresh; sparkling clear,
sweet smelling water and which
supports fish life free from
excessive algae and weeds.
Biotechnology based
solutions involve the use of
scientific methods to aintain the
natural health of lake. The
Essential components of a good
Biological solution are:
(A) The presence of a sufficient
quantity of beneficial facultative
bacteria
(B) The provision for sufficient
Pond/Lake Bed Aeration

21. Be-Aware
Being Chemical dosing utmost care should be
taken while handling the products. Egg Has to be
handled like egg. Glass has to be handled like
glass.
Visible eruption of entrapped Algae will surface
up, post treatment. Either this has to be remove
manually, or flushed out thro outflow source.
Public & Press has to be kept informed that State
is in process of cleansing the lake, hence for
couple of weeks this situation is inevitable for
good.

22. How Triozon Helps
Eco-friendly
Oxygenates
Oxidizes
Mitigates Algae Growth
Improves Water Clarity
Eliminates Pond Odors
Promotes Fish
Limits Mosquito Breeding

23. Treatment Process
Before Treatment
After Treatment in 20
minutes

24. Treated Process
Post Treatment 45 minutes Post Treatment

25. 12 hrs scenario
In 12 hrs View the Algal
Color
Side View with Water Clarity

26. Our Mission ends with :

27. TEAM TRIOZON