Waste Water Treatment Process and Types of treatment Used Effluent Treatment Plant (ETP) / Sewage Treatment Plant to treat your wastewater which can be further reused netsolwater_sewage treatment plant manufactre The ETP, STP, demineralization plant, softeners, wastewater treatment plants, drinking water plants etc. the corporate features a huge number of clients list. the most aim of this company is to realize higher customer satisfaction by providing highest quality products and water services.

1. Netsol Water Solutions Pvt. Ltd.
Call +91 9650608473, +91 9650795306
Email- info@netsolwater.com Visit- www.netsolwater.com
Address- Plot No. - 217, Udyog Kendra - 2, Ecotech - 3, Greater Noida, Uttar Pradesh, India
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2. Waste Water Treatment
Usually refer to sewage treatment, or domestic wastewater treatment
process of removing contaminants from wastewater, both runoff and
domestic
Sewage / Waste water treatment procedure includes several processes
like chemical, biological and physical processes of water treatment.
These methods of treatment successfully remove mud, effluents and
poisonous materials from wastewater of sewage. the foremost
advanced technologies are utilized in our sewage water treatment
plants.
Residences (kitchen, bathroom)
Commercial institution
Industrial institution (usually require specialized treatment Process)
SOURCE OF WASTE WATER
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3. Purpose OF Waste Water Treatment:
To manage water discharged from homes, businesses
, industries & to reduce the threat of water pollution.
To produce waste stream (effluent)
To produce solid waste (sludge)
To discharge or reuse them back into the
environment
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4. Collected and transported via a network of pipes and
pump stations to a municipal treatment plant
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5. Primary
solids are separated
Secondary
dissolved biological matter is converted into a
solid mass by using water-borne bacteria
95% of the suspended molecules should be
removed
Tertiary
biological solids are neutralized then disposed,
and treated water may be disinfected chemically
or physically
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6. Types of Waste Water Treatment
Mechanical treatment
•Influx (Influent)
•Removal of large objects
•Removal of sand and grit
•Primary Sedimentation
Biological treatment
•Trickling bed filter
•Activated sludge
Chemical treatment
•Disinfection
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7. Preliminary Treatment
- removes large objects and non-degradable materials
- protects pumps and equipment from damage
- bar screen and grit chamber
Bar Screen
- catches large objects that have
gotten into sewer system such as bricks,
bottles, pieces of wood, etc
Grit Chamber
removes rocks, gravel, broken glass, etc.
Mesh Screen
- removes diapers, combs, towels, plastic bags,
syringes, etc.
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8. Treatment stages - Primary Treatment
typical materials that are removed during primary treatment include
fats, oils, and greases (eg. FOG)
sand, gravels and rocks (eg. grit)
larger settleable solids including human waste, and floating
materials
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9. Treatment stages - Secondary Treatment or Biological
Treatment
degrade biological content (dissolved organic matter) of the sewage
Ex: human waste, food waste, soaps, detergent
Added bacteria and protozoa into sewage.3 different approaches
Fixed film system
Suspended film system
Lagoon system
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10. Suspended Film Systems
stir and suspend microorganisms in wastewater settled out as a sludge
pumped back into the incoming wastewater Ex: Activated sludge,
extended aeration
Secondary Treatment or Biological Treatment
& Role of Microorganisms
Activated sludge
Mixed community of microorganisms .Both aerobic and anaerobic bacteria may exist.
Biological floc is formed
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11. Activated sludge outflow
line
Pump activated sludge back
to the aeration tank
Effluent outflow line
discharged effluent into bay
or tertiary treatment plant
Activated sludge
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12. Lagoon Systems
hold the waste-water for several months
natural degradation of sewage
Usually reeds are preferred
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13. Tertiary Treatment
Remove disease-causing organisms
from wastewater
There are four major processes
under the Tertiary Treatment
1. Solids removal
2. Biological nitrogen removal
3. Biological phosphorus removal
4. Disinfection
There are 3 different disinfection
process
1. Chlorination
2. UV light radiation
3. Ozonation
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14. BIOLOGICAL NITROGEN REMOVAL
NITRIFICATION: Ammonia(NH4+)
Nitrosomonas
Nitrite
Nitrobacter
Nitrate
DENITRIFICATION:
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15. Biological Phosphorous Removal
The phosphorus enriched supernatant that comes out of the
phosphorus Stripper is treated with lime to precipitate the
phosphorus .The resultant Liquid supernatant can be returned to
the aeration tank for further treatment.
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16. Chlorination
Most common
Advantages: low
cost & effective
Disadvantages:
chlorine residue
could be harmful to
environment
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17. UV light radiation
Damage the genetic
structure of bacteria,
viruses and other
pathogens.
Advantages: no
chemicals are used
water taste more
natural
Disadvantages: high
maintenance of the
UV-lamp
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18. Ozonation
Oxidized most pathogenic microorganisms
Advantages: safer than chlorination fewer disinfection
by-product
Disadvantage: high cost
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19. Dairy facilities
Shed facilities
(washing of herd,
Milking, manure)
Anaerobic pond treatment
Aerobic Pond treatment
Treated
water
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20. Organic matter
Bacterial oxidation
Acids,Alcohols,
Aldehydes,ketones
New Bacterial cells
Bacterial Oxidation
CO2,CH4,
NH3,H2S etc
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21. BiologicalAcidification
Anaerobic sludge
Blanket reactor
Processing of
sulfide
sulfur
SLUDGE
SLUDGE
NaHS
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22. Summary
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23. Disposal of wastewaters from an industrial plant is a difficult and
costly problem. Most petroleum refineries, chemical and Nuclear
plants ,Dairy and Tannery plants have onsite facilities to treat their
wastewaters so that the pollutant concentrations in the treated
wastewater comply with the local and/or national regulations
regarding disposal of wastewaters into community treatment plants
or into rivers, lakes or oceans. Constructed wetlands are being used
in an increasing number of cases as they provided high quality and
productive on-site treatment. Other Industrial processes that
produce a lot of waste-waters such as paper and pulp production has
created environmental concern leading to development of processes
to recycle water use within plants before they have to be cleaned
and disposed of. Treated wastewater can be reused as drinking
water, in industry (cooling towers), in artificial recharge of aquifers,
in agriculture and in the rehabilitation of natural ecosystems.
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24. Source Of Knowledge
Nesolwater.com
Netsol Water is one among the best-growing water and wastewater Treatment
Company in India. the corporate has its own effluent treatment plant, sewage
treatment plant, Commercial and industrial RO plants manufacturing unit in greater
noida, Uttar Pradesh ,india. The ETP, STP, demineralization plant, softeners,
wastewater treatment plants, drinking water plants etc. the corporate features a huge
number of clients list. the most aim of this company is to realize higher customer
satisfaction by providing highest quality products and water services.
Biotechnology by U.Satyanarayan
wikipedia.org/wiki/Wastewater
Standard Methods of the Examination of Water and Wastewater
.
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25. netsolwater.com
www.netsolwater.com
Call - 9650608473 for STP, ETP,
Industrail RO