WorksheetsWater Treatment Plants
Total questions: 12
Worksheet time: 9mins
Reorder the following in order of the stages of water treatment.
Screening
Flocculation
Sedimentation
Filtration
Chlorination
Flocculation is ...
The coming together (coagulating) of small suspended particles in water.
The coming together (coagulating) of large suspended particles in water.
The coming together (coagulating) of large dissolved particles in water.
The coming together (coagulating) of small dissolved particles in water.
Why is aluminium sulphate sometimes added to water in water treatment?
↓ pH
Flocculation
↑ pH
Sterilises H2O
Why is chlorine sometimes added to water in water treatment?
↓ pH
Flocculation
↑ pH
Sterilises H2O
What is done water for dental care?
Activated sludge is added to the water.
The water aerated.
Fluoride containing compounds are added to the water.
Chlorine containing compounds are added to the water.
What word means the solid particles that have settled out during the sedimentation process of water treatment.
Sediment
Solubility
Settlement
Solidifying
What is the first step in the water treatment process?
Coagulation
Filtration and removal of debris, sand, grit, etc.
Fluoridation
pH adjustment
Removes microorganisms.
Cleans the water.
Makes the water taste nice.
Removes twigs and sediment.
What might arise if too much fluorine is added to a water sample?
The taste might be affected and pipes will become corroded.
Your teeth might become stained.
The water might become hardened.
What is a sewage treatment plant?
The place where water is cleaned, filtered and tested before re-entering the water cycle.
The place where water is cleaned, filtered and tested before going to our houses.
The network of pipes that carry sewage (dirty water) from our houses.
The place where water is bottled for drinking.
What type of living things eat the organic matter in the sewage?
Plants
Animals
Bacteria
Fungi
Chemicals used to disinfect water
Chlorine
Oxygen
Nitrogen
Ozone
