write four method used to purify river water to obtain drinking water by the water purification plant
Answers
Answer:
The methods used include physical processes such as filtration, sedimentation, and distillation; biological processes such as slow sand filters or biologically active carbon; chemical processes such as flocculation and chlorination; and the use of electromagnetic radiation such as ultraviolet light.
Explanation:
Answer:
In Ancient days
People use streams, rivers, lakes and reservoirs as sources of water as well as ground water.
Ancient civilizations didn’t know about tasteless toxins that can grow in water. The main way of testing water purity was through its clearness, taste and odor.
used aqueducts to keep water pure
sand and gravel were used to filter water before boiling it. This method was from the Sanskrit manuscript called the Susruta Samhita.
To disinfect water, many ancient cultures would use copper, iron or hot sand in conjunction with boiling it.
Herbs were often used in well filtration, such as amla, which is high in vitamin C, and khus.
Plants were sometimes used to purify water, such as water lily roots and the seeds of the nirmali (Strychnos potatorum).
purification with Natural sources are
Explanation: