Question

The combination of alum and dirt particles is called​

Answer 1

Answer:

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Explanation:

Suspended particles cannot be removed completely by plain settling. Large, heavy particles settle out readily, but smaller and lighter particles settle very slowly or in some cases do not settle at all. Because of this, the sedimentation step is usually preceded by a chemical process known as coagulation. Chemicals (coagulants) are added to the water to bring the nonsettling particles together into larger, heavier masses of solids called floc. Aluminum sulfate (alum) is the most common coagulant used for water purification. Other chemicals, such as ferric sulfate or sodium aluminate, may also be used.

Answer 2

The combination of alum and dirt particles is called Coagulation process. This process is used to remove solids in waste water treatment plants.

Explanation:

• Coagulation is commonly achieved by adding different types of chemicals (coagulants) to waste water to promote destabilization of non-settlement particles takes place.
• This process changes the size distribution of particles from a large number of particles to a small number of particles.
• Coagulation is usually accomplished in two stages: rapid mixing and slow mixing.
• Aluminum sulfate (alum) is the most common coagulant used for water purification.
• Hence, the combination of alum and dirt particles is called Coagulation use in waste water purification treatment.