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Wastewater treatment.pptx

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Wastewater treatment.pptx

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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.

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.

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Wastewater treatment.pptx

  1. 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. 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. 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. 4. Wastewater Treatment Its Journey to Treatment and Return to the Environment
  5. 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. 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. 7. Wastewater Contaminants • Suspended solids • Biodegradable organics (e.g., BOD) • Pathogenic bacteria • Nutrients (N & P)
  8. 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. 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!
  10. 10. 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)
  11. 11. • Reduce organic content i.e., BOD • Removal/reduction of nutrients i.e., N,P • Removal/inactivation of pathogenic microbes Objectives of WWT
  12. 12. Levels of Treatment
  13. 13. 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
  14. 14. 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
  15. 15. • Septic Tanks • • Constructed Wetlands Composting Wastewater Treatment Alternatives
  16. 16. THANK YOU

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