The document explains the concept of wastewater, defining it based on oxygen levels and detailing its various inorganic, organic, and macro-solid constituents. It discusses different wastewater treatment processes, including osmotic and magnetic methods, their costs, efficiencies, and disadvantages, while also highlighting the public health risks associated with polluted water. Additionally, it notes the types of wastewater and the challenges faced in water management for agricultural use.

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2. What is meant by waste water ……?
The purity of water decides on the basis of level
of oxygen present in water………
If the level of oxygen is sufficient enough that
water is said to pure water…
 If the level of oxygen is not sufficient enough
then that water is said to be waste water…..

3. Inorganic particles such as sand, grit, metal
particles, ceramics, etc.;
Soluble inorganic material such as ammonia,
road-salt, sea-salt, cyanide, hydrogen sulfide, thio-
cyanates, thio-sulfates, etc.;
Animals such as protozoa, insects, arthropods,
small fish, etc.;
Macro-solids such as sanitary napkins,
nappies/diapers, needles, children's toys, dead
animals or plants……
Constituents of waste water:

4. Components of waste water:

5. Gases such as hydrogen sulfide,
carbon dioxide, methane, etc.;
Emulsions such as paints, adhesives,
mayonnaise, hair colorants, emulsified
oils, etc.;
Toxins such as pesticides, poisons,
herbicides, etc.
Pharmaceuticals and hormones………

6. Treatment of waste water.........
Water can be treated in many ways……..
Osmotic process……
Magnetic process….
Industrial methods……..

7. Industrially water is purified in two process…..

8. Industrially water is also purified in this
process…..
The purity of water produced here is very high….
but it needs very cost…. So we has to go for another
alternative…….

9. The second process is osmotic process:
This is a process of
less expenditure…
But the water
produced in this
process is not so
purified….
This plant has to be
fixed at a stationary
point......
Here chlorine gas is
used so it is chemically
effective…..

10. The other process of purification is:
magnetic process……….
The water
produced in
this process is
highly purified
and 100%
sure….
But it takes
long time to
purify….
So it is also
excluded……..

11. Water can also be purified by………
chemical additives……..

12. Disadvantages of this process…….

14. There are many deadly effects on
drinking of polluted water both on
mankind and animal kingdom……:
Mainly on respiratory
organs like lungs….,
kidneys…, liver………!
 it also kills the
immunity system…
 it also effects
digestive system..
 sometimes it may
lead to death……

15. Agriculture has to
compete for increasingly
scarce water resources
with industry and
municipal users, there is
often no alternative for
farmers but to use water
polluted with urban
waste directly to water
their crops.
Waste water can be used for agriculture…….

16. Types of waste water…………
Waste water is of many types……….
Construction waste
Demolition waste
Electronic waste
Brown waste

17. World wide water management
plants………

19. Thank you……….
Dedicated to……..
Asst. professor. D. swetha{madam}….,
Department of Environment scs……,