1
Drinking water treatment Questions and
Answers (100% Correct Answers) Already
Graded A+
How many people lack safely managed drinking water
services [ Ans: ] 2.2 Billion
1/4 of people around the world
Country with very high water stress [ Ans: ] Qatar
But uses desalination of ocean water
Solutions to keep water safe and clean [ Ans: ] Dispose
pharmaceuticals wisely
Not pour detergents down drains
Preserve natural resources
Reduce water usage
Can you drink montreal tap water [ Ans: ] Yes but not
everywhere cause still some lead pipes
Also atrazine contamination (pesticide)
Problems from bottled water [ Ans: ] Microplastics
Air pollution and Fossil fuel burning in manufacturing and
distribution
, 2
Microbes proliferate if reused or sit under sun
Drinking water treatment steps [ Ans: ] 1. Coagulation
2. Flocculation (sedimentation)
3. Filtration
4. Disinfection
1. Coagulation [ Ans: ] Formation of floc particles
- By chemical addition to destabilize suspended particles
--- Aluminum sulfate (ALUM) and ferric chloride
- Rapid mixing
2. Flocculation (sedimentation) [ Ans: ] Gentle mixing to
promote particle collisions for floc formation and growth
- Use of coagulants
- Slow mixing
- Preparation for sedimentation
Sedimentation
- Gravity for settling floc particles
- Removal of suspended solids
Drinking water treatment Questions and
Answers (100% Correct Answers) Already
Graded A+
How many people lack safely managed drinking water
services [ Ans: ] 2.2 Billion
1/4 of people around the world
Country with very high water stress [ Ans: ] Qatar
But uses desalination of ocean water
Solutions to keep water safe and clean [ Ans: ] Dispose
pharmaceuticals wisely
Not pour detergents down drains
Preserve natural resources
Reduce water usage
Can you drink montreal tap water [ Ans: ] Yes but not
everywhere cause still some lead pipes
Also atrazine contamination (pesticide)
Problems from bottled water [ Ans: ] Microplastics
Air pollution and Fossil fuel burning in manufacturing and
distribution
, 2
Microbes proliferate if reused or sit under sun
Drinking water treatment steps [ Ans: ] 1. Coagulation
2. Flocculation (sedimentation)
3. Filtration
4. Disinfection
1. Coagulation [ Ans: ] Formation of floc particles
- By chemical addition to destabilize suspended particles
--- Aluminum sulfate (ALUM) and ferric chloride
- Rapid mixing
2. Flocculation (sedimentation) [ Ans: ] Gentle mixing to
promote particle collisions for floc formation and growth
- Use of coagulants
- Slow mixing
- Preparation for sedimentation
Sedimentation
- Gravity for settling floc particles
- Removal of suspended solids