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Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

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BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 12, Problem 23E
Textbook Problem
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Explain how drinking water is treated before being delivered to your tap.

Interpretation Introduction

Interpretation:

The method of treating drinking water before it being supplied to taps is to be explained.

Concept Introduction:

Water contains some unwanted particles that can lead to diseases and other harmful effects on human health.

Water is treated with different methods for the removal of contaminants from it to ensure high quality.

Explanation of Solution

Drinking water is made safe by using techniques like filtration, sedimentation and sand filtration, aeration, and sterilization. The contaminated water is first passed through a wire mesh, which is also known as coarse filtration. This removes all the visible waste such as leaves, polythene bags and so on. Then, coagulants are added so that particles can either sink or float. Thus, the settled waste is removed from the settling tank and floating waste is removed by scanning the surface. This process is also known as sedimentation. The water is then passed through sand to filter and remove the remaining contaminants...

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Chapter 12 Solutions

Chemistry In Focus
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