Wastewater treatment and causes of it since we know availability of water percent in India and from dis we need to now to conserve for further use. We know there r three stages of purifying waste water primary treatment secondary treatment and tertiary treatment as we know there r many process included in each and every step. So in this ppt we can about it in detailed and much more interesting it is since it has more of pictorial description. Enjoy and gain more of knowledge. Hope dis will be useful for all.

1. BANGALORE INSTITUTE OF TECHNOLOGY
K.R.ROAD, V.V.PURA, BANGAOLRE-560004
DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION ENGINEERING
5th SEMESTER
TECHNOLOGICAL INNOVATION MANAGEMENT AND ENTREPRENEURSHIP
GUIDED BY – Prof.Manjula.A.R
TOPIC:WASTEWATER TREATMENT
Assignment 02
Presented by:
Prakruthi.D.S(1bI20ET022)
Shilpashree L R (1BI20ET32)
Varshitha M P(1BI20ET046)

2. VISION
Empowering every students to be creative and productive in
the field of telecommunication engineering , by importing
excellent technical education and Inculcating human values.
MISSION
M1.To make our students acquaints with the global
requirements such as problem solving skills, cultural
sensitivity , ethical behaviour and social responsibility.
 M2.To motivate our students to pursue higher education
and engage in continuous upgradation of their professional
skills.
 M3.To encourage students to develop communication
skills, professional vales and positive attitude that in turn
leads to fostering leadership qualities.

3. COURSE OUTCOMES
1. Understand basic skills of Management.
2. Understand the need for Entrepreneurs and
their skills.
3. Identify the Management functions and Social
responsibilities.
4. Understand the Ideation Process, creation of
Business Model, Feasibility Study and source of
funding.

4. Wastewater Treatment
Its Journey to Treatment and
Return to the Environment

5. What is Wastewater?
• Wastewater is a term that is used to describe waste
material that includes industrial liquid waste and sewage
waste that is collected in towns and urban
areas and treated at urban wastewater treatment plants.

6. Wastewater treatment
• A process to convert wastewater - which is
water no longer needed or suitable for its
most recent use - into an effluent that can
be either returned to the water cycle with
minimal environmental issues or reused.

7. Wastewater Contaminants
• Suspended solids
• Biodegradable organics (e.g., BOD)
• Pathogenic bacteria
• Nutrients (N & P)

8. does wastewater come
Where
from?
• Residences
— human and animal excreta and waters used for washing, bathing, and
cooking.
• Commercial institution
• Dairy and industrial establishment
— slaughterhouse waste, dairy waste, tannery wastewater, etc.

9. Where does it all go!
Where does the
water from the
washer go?
When you flush the
toilet where does
the contents go?
By gravity flow, the waste is on its way
to your local wastewater treatment plant!

11. Why treat wastewater?
• Causes a demand for dissolved oxygen (lower DO
levels of streams)
• Adds nutrients (nitrate and phosphate) to cause
excessive growth
• Increases suspended solids or sediments in
streams (turbidity increase)

12. • Reduce organic content i.e., BOD
• Removal/reduction of nutrients i.e., N,P
• Removal/inactivation of pathogenic
microbes
Objectives of WWT

13. Levels of Treatment

14. Activated sludge process
• Primary wastewater mixed with bacteria-rich (activated)
sludge and air or oxygen is pumped into the mixture
• Both aerobic and anaerobic bacteria may exist
• Promotes bacterial growth and decomposition of
organic matter
• BOD removal is approximately 85%
• Microbial removal by activated sludge
• 80-99% removal of bacteria
• 90-99% removal of viruses

15. When the treatment is done…
• Effluent back to stream after
– a final carbon filtration and
– chlorination/de-chlorination
• Sludge – very nutrient rich
– applied directly to land as fertilizer
– incinerated (good fuel after drying)
– composted

16. • Septic Tanks
•
• Constructed
Wetlands
Composting
Wastewater
Treatment
Alternatives

17. THANK YOU