A348 L2 Mindmap by VANIEFEL MAHENDREN https://padlet.com/20008036_2/vkbnyhh2s268lnu4 en-us 2021-10-26 05:02:54 UTC 2021-10-26 08:57:06 UTC hello@padlet.com Obtaining drinkable water from river or reservoir water 20008036_2 https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1843983894 2021-10-26 05:22:46 UTC https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1843983894 Obtaining “clean” water from the generated wastewater 20008036_2 https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1843987858 2021-10-26 05:25:04 UTC https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1843987858 Screening https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1843990984 Principle: Sieving 
Equipment: Screens]]> 2021-10-26 05:27:06 UTC https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1843990984 Sedimentation https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1843992016 Principle: Settling
Equipment: Grit settling tanks, Vortex grit chambers
Parameters: TSS]]> 2021-10-26 05:27:45 UTC https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1843992016 Precipitation https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1843992801 Principle: Reacting the unwanted ions with other ions to produce an insoluble product through the use of oxidants and ions

]]> 2021-10-26 05:28:13 UTC https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1843992801 Disinfection https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1843994097 Principle: Addition of chemicals (eg Chlorine) to kill bacteria
Mechanism: Addition of chemicals
Chlorine (kills disease-causing bacteria)
Fluorine (Protects teeth of drinkers)
Equipment: Water pressure tanks , water softeners 
Parameters: COD ,pH, caustic alkalinity


]]> 2021-10-26 05:29:02 UTC https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1843994097 Screening (Preliminary) https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1844008760 Principle: Sieving (Debris and sandy material)
Equipment: Pumps
Mechanical screens
grit settling tanks 
vortex grit chambers 
The used water flows through mechanical screens to remove the debris. Subsequently, the heavier sandy materials water is allowed to settle and be removed.
Parameter: TSS


]]> 2021-10-26 05:38:25 UTC https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1844008760 Clarifying (Primary) https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1844010299 Mechanism
  • solid pollutants settle at the bottom
  • lighter material (scum/greasy materials) float to the top 
Equipment: Primary clarifiers, scrapers


]]> 2021-10-26 05:39:27 UTC https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1844010299 Aeration (Secondary) https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1844010637 Mechanism: Mixing with micro-organisms and introducing oxygen
Equipment: Aeration tanks 
Air diffuser domes
Mechanical surface aerators
Parameters: BOD


]]> 2021-10-26 05:39:41 UTC https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1844010637 Final clarifying https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1844011139 Sludge settles to the bottom of the tank and is drawn out
Equipment: Final clarifier 
Parameters: COD ,pH, caustic alkalinity]]> 2021-10-26 05:40:02 UTC https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1844011139 Flocculation and coagulation 20008036_2 https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1844024380 Underlying mechanism: Creation of larger particles
small particles with non-rigid surfaces are made to agglomerate by mixing the water
Parameters: TSS]]> 2021-10-26 05:49:06 UTC https://padlet.com/20008036_2/vkbnyhh2s268lnu4/wish/1844024380