What is the function of a skimmer in a wastewater treatment plant?
What is the function of a skimmer in a wastewater treatment plant?
The correct option is B It helps in removing floatable solids.
Sewage has different kinds of impurities such as suspended solids, oil, organic and inorganic impurities.
1. Bar screen: It filters large objects like plastic bags, cans, napkins, sticks, and more.
2. Grit and sand removal tank: Here, the denser and undissolved impurities, like sand and grit, settle down at the bottom of the tank.
3. Water clarifier: It contains a rotor that has two portions:
-
Skimmer: A skimmer is a type of machine which helps in separating floatable solids like oil and grease.
-
Scraper: Scrapes out the sludge settled at the bottom into a separate decomposing tank.
4. Disinfecting tank: Here, the clarified water is treated with chemicals, like chlorine, to kill harmful bacteria before discharging it into water bodies.
Sewage has different kinds of impurities such as suspended solids, oil, organic and inorganic impurities.
1. Bar screen: It filters large objects like plastic bags, cans, napkins, sticks, and more.
2. Grit and sand removal tank: Here, the denser and undissolved impurities, like sand and grit, settle down at the bottom of the tank.
3. Water clarifier: It contains a rotor that has two portions:
-
Skimmer: A skimmer is a type of machine which helps in separating floatable solids like oil and grease.
-
Scraper: Scrapes out the sludge settled at the bottom into a separate decomposing tank.
4. Disinfecting tank: Here, the clarified water is treated with chemicals, like chlorine, to kill harmful bacteria before discharging it into water bodies.
