Gem ppt

1. PPT-15
Green Earth Movement
An E-Newsletter for the cause of Environment, Peace, Harmony and Justice
Remember - “you and I can decide the future”

2. The term "wastewater treatment" is also called "sewage
treatment." Nature has an amazing ability to cope with
small amounts of water wastes and pollution, but it
would be overwhelmed if we didn't treat the billions of
gallons of wastewater and sewage produced every day
before releasing it back to the environment. Treatment
plants reduce pollutants in wastewater to a level nature
can handle.

3. Wastewater is used water. It includes substances such
as human waste, food scraps, oils, soaps and
chemicals. In homes, this includes water from sinks,
showers, bathtubs, toilets, washing machines and
dishwashers. Businesses and industries also contribute
their
share of used water that must
be cleaned.
Wastewater also includes storm
runoff. Although some people
assume that the rain that runs
down the street during a storm
is fairly clean, it isn't. Harmful substances that wash off
roads, parking lots, and rooftops can harm our rivers and
lakes.

4. Why Treat Wastewater?
It's a matter of caring for our environment
and for our own health. There are a lot of
good reasons why keeping our water clean
is an important priority:

5. 1. Fisheries
Clean water is critical to plants and
animals that live in water. This is
important to the fishing industry, sport
fishing enthusiasts, and future
generations.

6. Wildlife habitats
Our rivers and ocean waters teem with
life that depends on shoreline, beaches
and marshes. They are
critical habitats for
hundreds of species
of fish and other
aquatic life.
Migratory water
birds use the areas for resting and
feeding.

7. Recreation and quality of life
Water is a great playground for us all.
The scenic and recreational
values of our waters
are reasons many
people choose to live
where they do. Visitors
are drawn to water
activities such as swimming, fishing,
boating and picnicking.

8. Health concerns
If it is not properly cleaned, water can
carry disease. Since we live, work and
play so close to water, harmful bacteria
have to be removed to make water
safe.

9. Effects of wastewater
pollutants
If wastewater is not properly
treated, then the environment
and human health can be
negatively impacted. These
impacts can include harm to fish
and wildlife populations, oxygen
depletion, beach closures and
other restrictions on recreational water use, restrictions
on fish and shellfish harvesting and contamination of
drinking water. Environment Canada provides some
examples of pollutants that can be found in wastewater
and the potentially harmful effects these substances can
have on ecosystems and human health:

10. Decaying organic matter and debris can use up
the dissolved oxygen in a lake so fish and other
aquatic biota cannot survive;
Excessive nutrients, such as phosphorus and
nitrogen (including ammonia), can cause
eutrophication, or over-fertilization of receiving
waters, which can be toxic to aquatic organisms,
promote excessive plant growth, reduce available
oxygen, harm spawning grounds, alter habitat and

11. Chlorine compounds and inorganic
chloramines can be toxic to aquatic
invertebrates,
algae and fish;
Bacteria, viruses and
disease-causing pathogens
can pollute beaches and
contaminate shellfish
populations,
leading to restrictions on human recreation,
drinking water consumption and shellfish
consumption;

12. Metals, such as mercury, lead, cadmium,
chromium and arsenic can have acute and
chronic toxic effects on species.
Other substances such as some
pharmaceutical and personal care products,
primarily entering the environment in
wastewater effluents, may also pose threats
to human health, aquatic life and wildlife.

13. PROCES OF WASTE WATER TREATMENT
Sewage treatment generally involves three stages,
called primary, secondary and tertiary treatment.
1] Primary treatment consists of
temporarily holding the sewage
in a quiescent basin where heavy
solids can settle to the bottom
while oil, grease and lighter solids
float to the surface. The settled
and floating materials are removed and the
remaining liquid may be discharged or subjected to
secondary treatment.

14. 2] Secondary treatment removes dissolved and
suspended biological matter. Secondary treatment is
typically performed by indiginous, water-borne micro-
organisms in a managed habitat. Secondary
treatment may require a separation process to
remove the micro-organisms from the treated water
prior to discharge or tertiary treatment.

15. Disinfection is considered part of
secondary treatment of wastewater.
This can be accomplished through
chemical, ultraviolet light or ozone
processes. The most common way to
disinfect water at this stage is to use
chlorine. Disinfection inactivates
biological
contaminants in the
wastewater prior to
discharge of the water

16. The sludge that is removed from primary and
secondary treatment processes must also be treated
prior to being disposed. As for the water, look
carefully at what is discharged from the plant and
consider all of the ways it has been
treated – physically, biologically
and chemically – and you will be
amazed at the clean, clear water
that is produced. For the past 40
years, the Clean Water Act
has regulated these processes to protect the
environment and the public’s health. The act, along
with other federal and state regulations, ensures that
we can use this water again. After all, the wastewater
that is treated will be used again by the planet and

17. 3] Tertiary treatment is sometimes
defined as anything more than
primary and secondary
treatment in order to allow
rejection into a highly
sensitive or fragile ecosystem
(estuaries, low-flow rivers,
coral reefs,...). Treated
water is sometimes disinfected
chemically or physically (for example, by lagoons and
microfiltration) prior to discharge into a stream, river,
bay, lagoon or wetland, or it can be used for the
irrigation of a golf course, green way or park. If it is
sufficiently clean, it can also be used for groundwater
recharge or agricultural purposes.

18. BENEFITS OF WASTE WATER TREATMENT
1] Clean Water
Water is a renewable
resource because it gets
purified through
evaporation and rain;
however, only about 3 percent of the earth's
water is potable. Although nature slowly cleans
wastewater over time, the main benefit of
wastewater treatment is maintaining clean water
for reuse.

19. 2] New Research and Improvements
Wastewater treatment processes are changing as
researchers develop new techniques. Such
research leads to improvements in purification,
the speed of water treatment and uses for the
waste products removed. Development of new
processes also saves more energy, time and
resources, which are then available for other
needs.

20. 3] Disease
Wastewater treatment
processes can contain and
remove potential
disease-causing contaminants
through a filtering system that blocks their path
and further treatment that kills harmful organisms.
This keeps potential diseases and bacteria from
entering other water sources, or the ground, and
harming people as well as plants and animals.
Treatment systems continue to develop better
methods of purifying the water.

21. 4] Economics
Jobs are created by wastewater treatment
research and processing. Treatment
facilities, for example, require regular
maintenance and human operation. In
addition, returning clean water to rivers and
streams
helps maintain natural areas,
encouraging tourism.

22. LIST OF SOME OF THE WASTE WATER CONSULTANTS
(Courtesy: Internet. List not exhaustive)
Ahmedabad: FREEION ENGINEERING, 06 Nutan Prakash Park, Chandkheda Sabermati, Ioc Road, D
Cabin, Ahmedabad – 380019, 9374574187, 9601403700, 9601403011
Bangalore: LIFE GUARD SALES AND SERVICES: No.6, 1st Flr, Opp Bajaj Showroom, Old Madras Rd,
Subhash Ngr, Virgonagar, Post, Krishnarajapuram, Bangalore – 560036, (080) 66497377
Delhi: Fontus Water Limited, A-1/152, In Front Of Shiv Mandir, Ignou Rd, Okhla Industrial Area, Delhi –
110020, Tel: (011) 66226138
Goa: ESTEEM HYDRO SYSTEM PVT LTD, 21-A, Jalvayu Villa, Near MES College, Jaikisan Club
Road, Zuarinagar, GOA – 403726,9545505238, 9765370572, (0832) 3293065
Gurgaon: DR GHOSH LABORATORIES, 113/16 Prem Nagar, Near Sohna Chowk, Old Jail
Road, Gurgaon, Gurgaon - 122001 | (011) 66223780
Mumbai: 1] FILTRA CONSULTANTS AND ENGINEERS, 109, Shiv Sagar Industrial Estate, Opp Aarey
Road, Kotkar Road, Goregaon East, Mumbai – 400063, (022) 29275907, 29271998, 29275924, 28712027
2] THERMAX LIMITED, Dhanraj Mahal,2nd Floor, Near Gateway Of India, Chatrapati Shivaji
Marg, Colaba, Mumbai – 400005, 9823261916 , (022) 22045391, 22852058
Secunderabad: PURE & PRISTINE SOLUTIONS: Plot No. 52/1, H.No 8/7/178/28 Swarnadhama Nagar,
Old Bowenpally, Secundrabad - 500011, India, +(91)-8790998491

23. This educational PowerPoint Presentation (editable) is
prepared by GEM Team (courtesy: internet).
For other similar GEM PowerPoint Presentations on
various environmental issues see next slide.
These PPTs may be downloaded from our website
www.infantjesusjogeshwari.in
The GEM PPTs can be creatively used for various
groups like school/college students, NGOs,
government officials, Church groups, SCC groups,
housing society members and so on.

24. 1. Twenty Simple Tips
2. Solar Energy
3. Junk Food
4. Plastic – a boon or bane?
5. Green Passion
6. Zero Garbage
7. Soft drink – A Health Hazard
8. Waste to energy
9. Rain Water Harvesting
10. Eco-friendly Religions
11. Happy Green Diwali
12. Climate Change
13. The future of Biodiversity
14. Genetically Modified Foods
15. Waste Water Treatment
16. Body, Organ, Tissue Donation
17. Organic Farming
18. Waste to cooking gas
19. Reduce, Reuse, Recycle
20. Protect Mangroves
21. Say NO to Bottled water
22. Save Lakes and Ponds
23. Forests are green lungs
24. Coal Mining and Ecology
25. Sin of Food Waste
26. Climate change and Poverty
27. Stop Water Pollution
28. Carbon Footprints
29. Parks and Open Spaces
30. Rising Sea Levels
31. Laudato Si – Pope’s Encyclical
32. Air Pollution
33. Life Style Changes
34. Laudato Si – Fr Gerard
35. Water Pollution
36. Sand Mining
37. Kids Eco Clubs
38. Water Disaster

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