wast cy402 industrial wastewater treatment process
TRANSCRIPT
Membrane Bioreactor (MBR)Wastewater Treatment Plant
In
Milk Manufacturing
WAST CY402 – Industrial Wastewater Treatment
Process
Jojo TaguinodSumant Patel
By:
DUMPINGCOMPOUNDINGPROCESSINGMILK STORINGEVAPORATIONDRYING
MILK MANUFACTURING MAJOR PROCESSES
COMPOUNDING:
EVAPORATION:
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.)
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Piping & Instrumentation Diagram
Drum screen
Equalization Tank
DAF
Aeration Tank
MBRPermeate Tank
Centrifuge
Chiller Heat Exchanger
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.
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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.
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Coagulation/Flocculation/ Dissolve Air Floatation
Chemical treatment via coagulation and flocculation combined with dissolved air flotation reduces theCOD 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
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Coagulation/Flocculation/ Dissolve Air Floatation
Coagulation/Flocculation/ Dissolve Air Floatation
Before adding chemicals
After adding chemicals
After injecting air
Bioreactor/Aeration Tank
Biological treatment is employed to further treat the wastewater using microorganisms. Chemicals needed include: phosphoric acid, antifoam, caustic
Bioreactor/Aeration Tank
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.
Membrane Bioreactor
Hollow fiber membranes which filter the wastewater coming fromthe bioreactors.
Membrane Bioreactor
During permeation During backwash
To permeate tank
From permeate tank
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.
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.
Decanting Centrifuge
After adding chemicals
Before adding chemicals
After centrifuge
Decanting Centrifuge
Key Performance Indicator:
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
End…
Thank You!!!