Wast cy402 industrial wastewater treatment process

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Wast cy402 industrial wastewater treatment process

  1. 1. Membrane Bioreactor (MBR) Wastewater Treatment Plant In Milk Manufacturing WAST CY402 – Industrial Wastewater Treatment Process Jojo Taguinod Sumant Patel By:
  2. 2. DUMPING COMPOUNDING PROCESSING MILK STORING EVAPORATION DRYING MILK MANUFACTURING MAJOR PROCESSES
  3. 3. COMPOUNDING:
  4. 4. EVAPORATION:
  5. 5. Drying Conventional Waste Sources: • Unused Rework powder • Caustic/Acid waste from CIP • High strength wastewater BOD/COD/Nutrients rich wastewater from raw materials • Oil and grease • Cleaning agents (sterbac, divosan, divoquat, etc.) Google image
  6. 6. Piping & Instrumentation Diagram Drum screen Equalization Tank DAF Aeration Tank MBR Permeate Tank Centrifuge Chiller Heat Exchanger
  7. 7. Drum Screen Domestic and plant wastewater enters the rotating drum screen which filters any incoming trash or serve as grit removal. Drum screened wastewater enters the influent pump station which contains pumps to transfers the wastewater to the equalization tank. Google image
  8. 8. Equalization Tank Wastewater is neutralized and equalized in the equalization tank. Sulfuric acid and caustic soda are used to neutralize the pH. Antifoam is also used. AIR STRIPPING: Recirculation pumps together with the equalization blowers are used to efficiently mix and aerate the contents of the equalization tank and keep it aerobic. Anaerobic would produce H2S and gaseous ammonia. Google image
  9. 9. Coagulation/Flocculation/ Dissolve Air Floatation Chemical treatment via coagulation and flocculation combined with dissolved air flotation reduces the COD of the wastewater by roughly 30 to 40%. The DAF float/sludge is transferred to the DAF sludge tank which is further transported via the DAF sludge/solids pumps to the sludge holding tank. Treated DAF effluent is fed to aeration tanks. The DAF serves as a pre-treatment to the MBR. Chemicals needed: Pacl, polymer Air is the driving force Google image
  10. 10. Coagulation/Flocculation/ Dissolve Air Floatation
  11. 11. Coagulation/Flocculation/ Dissolve Air Floatation Before adding chemicals After adding chemicals After injecting air
  12. 12. Bioreactor/Aeration Tank Biological treatment is employed to further treat the wastewater using microorganisms. Chemicals needed include: phosphoric acid, antifoam, caustic
  13. 13. Bioreactor/Aeration Tank
  14. 14. Membrane Bioreactor The MBR system comes with a cooling package. The chillers together with the heat exchanger regulate the temperature of the bioreactor mixed liquor before feeding to the membrane tanks. Needs antifoam.
  15. 15. Membrane Bioreactor Hollow fiber membranes which filter the wastewater coming from the bioreactors.
  16. 16. Membrane Bioreactor During permeation During backwash To permeate tank From permeate tank
  17. 17. Sludge Holding Tank The sludge holding receives sludge from WAS (waste activated sludge) from the MBR and sludge from the DAF (dissolved air flotation) floatation and feeds to the decanting centrifuge. SHT needs polymer and antifoam.
  18. 18. Decanting Centrifuge The centrifuge dewaters DAF float and waste activated sludge from the MBR. It uses centrifugal force to separate the solids efficiently. Needs polymer.
  19. 19. Decanting Centrifuge After adding chemicals Before adding chemicals After centrifuge
  20. 20. Decanting Centrifuge Key Performance Indicator:
  21. 21. References:  Dissolved air flotation. Retrieved from: http://en.wikipedia.org/wiki/Dissolved_air_flotation  Membrane bioreactor. Retrieved from: http://en.wikipedia.org/wiki/Membrane_bioreactor  Membrane Bioreactor (MBR). Retrieved from: http://www.gewater.com/products/membrane-bioreactor- mbr.html  WPI – Pfizer Global Manufacturing
  22. 22. End… Thank You!!!

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