History of Water Treatment Processes

The video explores the evolution of wastewater treatment from ancient methods to modern technologies. It highlights key historical developments, such as the use of alum by Egyptians, Roman aqueducts, and the first treatment plant in Scotland. The 20th century saw the invention of biological treatment processes like activated sludge. Today, challenges include managing hormone levels and improving energy efficiency in treatment facilities.

What percentage of pollutants can modern wastewater treatment plants remove?

• 50%

• 99%

• 75%

• 100%

Which ancient civilization used alum as a coagulant to purify water?

• Romans

• Greeks

• Chinese

• Egyptians

What was the purpose of the Hippocratic sleeve invented in 500 BC?

• To filter boiled water

• To add flavor to water

• To boil water

• To store water

What was the primary function of Roman aqueducts?

• To filter water

• To transport water

• To store water

• To purify water

Who made the first discoveries of desalination in the early 17th century?

• Hippocrates

• Antonie van Leeuwenhoek

• Sir Francis Bacon

• Robert Tom

Where was the first wastewater treatment plant introduced in the early 18th century?

• Scotland

• Germany

• Italy

• France

What was added to wastewater treatment plants in 1854 to combat cholera?

• Reverse osmosis

• UV filtration

• Chlorine

• Alum

What process was invented in 1913 to handle increasing BOD and ammonia levels?

• Trickling filters

• Reverse osmosis

• Activated sludge process

• UV filtration

What is the main challenge for wastewater treatment in industrialized countries today?

• Pollution from factories

• Increasing hormone levels

• Lack of water supply

• High energy costs

Which technology was developed after 1970 for removing phosphorus and pesticides?

• Hippocratic sleeve

• Reverse osmosis

• Activated sludge

• Chlorine disinfection