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Advance Methods for waste management

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Advance Methods for waste management

  1. 1. P r o f . Y . H . O z a R e t d . P r o f . , D e p a r t m e n t O f E n v i r o n m e n t a l E n g i n e e r i n g , L . D . C o l l e g e O f E n g i n e e r i n g , A h m e d a b a d . Advance Methods for Waste Management for smart city or smart town planning
  2. 2. Advance methods I. Liquid (Waste Water): Advance treatments used for liquid waste are applied after primary, secondary and tertiary treatment or after primary and secondary or after primary treatment as per requirement. A few advance can be listed as under: − Advance Oxidation (removal of OC)  Ozonation  Fenton Reaction (H2O2 + FeSO4)  H2O2  Electro Oxidation  Hydro Oxidation
  3. 3. Ozonation
  4. 4. Fenton reaction
  5. 5. Hydro Oxidation
  6. 6. − Coagulation (removal of S.S)  Electro coagulation  Anionic coagulation  Cationic coagulation  Poly electrolyte  Ultra-filtration  Micro filtration
  7. 7. Electro coagulation
  8. 8. − Membrane methods (removal of OC & IOC)  Softening process  Ion exchange method  RO  Industrial RO − Anaerobic methods  Activated sludge process  Anaerobic reactor  Parallel & vertical column system  Aerated lagoon − Evaporation (MEP), Incineration
  9. 9. Softening Process
  10. 10. Ion Exchange Method
  11. 11. Reverse Osmosis
  12. 12. Industrial Reverse Osmosis Plant
  13. 13. Multiple Effect Evaporator
  14. 14. Case Studies . Evaporation (MEP), Incineration Industrial effluent have inorganic and organic salt It recovers organic solvent Waste water converted into solid mass which easily handle Step 1:- It is known as stripper. It recovered low boiling point OM Step 2:- waste water converted into slurry Step 3:- slurry converted into solid waste by dryer It is force circulation type of system which prevent scaling. Axial flow pump is important in the system Axial pump working with high capacity and low power In design fluid dynamics play important role
  15. 15. Plasma technique . Definition:- Plasma is a electrically neutral medium of unbounded positive and negative particle Plasma is fourth state of matter, it is hot ionised gas consisting of approx. equal number of positive charged ions and negative charged electrons Characteristic of plasma is different then ordinary gas system Plasma is classified in thermal plasma and non-thermal plasma These plasma technique is used and resultant in energy which afterward utilized in different system
  16. 16. Incineratior  Incineration is a waste treatment process that involves the combustion of organic substances contained in waste materials.  Incineration and other high-temperature waste treatment systems are described as "thermal treatment".  Incineration of waste materials converts the waste into ash, flue gas and heat.
  17. 17. Hydro Cavity Treatment  Cavitation is a specific phenomenon in a liquid if any changes occur in the pressure field over time and distance.  The effects of cavitation have become very useful in supporting chemical processes in the environmental protection technologies, especially in technologies related to the decomposition of substances particularly harmful to humans and his immediate surroundings. Cavitation can be realized by alterations in the flow and pressure (hydrodynamic cavitation).  In hydrodynamic cavitation, flow geometry is changed in such a way that the kinetic energy increases at the expense of local liquid pressure, which can make cavities depending on the vapor pressure of the liquid.
  18. 18.  Traditional treatment methods do not always produce the expected results.  There exists a certain group of organic non- biodegradable pollutants, having toxic, mutagenic, or carcinogenic properties.  In the current literature there are many studies related to hydrodynamic cavitation and the use of associated processes in water and effluent treatment technologies.
  19. 19. Thank You !!

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