Water waste treatment

Department of
Mahaveer college of pharmacy,
Meerut,
Name of Participants-
Suraj Mandal
Jitendra Raghav
Km. Shiva
Shivam Sain
Sanjeev Singhal

TECHCOMBO 2K17 ORGANISED BY ACE’s
Topic- Waste Water Treatments

 Introduction-
 Wastewater, is any water that has
been negatively impacted by
human use.
 Wastewater is a result of domestic,
industrial, commercial
or agricultural activities.
 Municipal wastewater can also be
called sewage.
 The term is justified because water
used in household sinks and
appliances is combined with water
used in toilets.

Why treat wastewater ?
 To remove pollutants from waste water
for its recycling.
 To promote health concern and Public
hygiene.
 To preserve aquatic life and wildlife
habitat.
 To promote recreation and quality of life.

1
•Primary
Treatment
2
•Secondary
Treatment
3
•Tertiary
Treatment

Preliminary Treatment
 Removal of waste water constituents such as
rags, sticks, floatable grit, and grease that may
cause maintenance or operational problem with
the treatment operations, processes, and
ancil1ary systems.

Primary Treatment
Removal of a portion of the suspended solids and
organic matter from the wastewater.

Primary treatment consists of
following processes/units
Sedimentation Coagulation Flocculation

Secondary Treatment
 Removal of biodegradable organic matter(insoluble or
suspension state) and suspended solids.
Disinfection is also typically included in the definition of
conventional secondary treatment

Secondary treatment consists
of following processes.
1
• Activated
Sludge
Process
2
• Oxidation
Ponds and
lagoons
3
• Trickling
Filter

Tertiary Treatment
Removal of residual suspended solids (after
secondary treatment), usually by granular
medium filtration or micro screens.
Disinfection is also typically a part of tertiary
treatment. Nutrient removal is often included in
this definition.

Tertiary treatment consists of
following processes and units.
Membrane
Filtration and
Separation
Dechlorination
and Disinfection
Systems
Reverse Osmosis
(RO) Systems
Ion Exchange
Physical/Chemical
Treatment

Environmental aspects in water
resources planning:-
Negative impacts-
 Damage to fish and wild life.
 Due to extinction of species of flora and fauna
change in ecology.
 Loss of forest land.
 Damage to vegetation on river bank.
 Loss of agricultural land.
 Water borne disease.

Positive impacts-
 Land use improvement by irrigation.
 Flood protection.
 Improved water supplies for domestic and
municipal uses.
 Power supplies without consumption of fuel.
 Water quality improvement. Fishery improvement.
 Recreational improvement.
 Health improvement.
 Improvement in climate of surrounding area.
 Development of sanctuaries and wild life.

Water waste treatment

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