Using a schematic diagram ,illustrate the correct sequence of urban water treatment. (a) Briefly explain the importance of a laboratory coat, safety goggles, gloves and protective masks as safety equipment in the Chemistry laboratory.

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Using a schematic diagram ,illustrate the correct sequence of urban water treatment. (a) Briefly explain the importance of a laboratory coat, safety goggles, gloves and protective masks as safety equipment in the Chemistry laboratory.

Answer 1

To illustrate the correct sequence of urban water treatment, I will provide a schematic diagram: [Schematic diagram showing the following steps:] 1. Raw Water Intake 2. Screening 3. Coagulation and Flocculation 4. Sedimentation 5. Filtration 6. Disinfection 7. Storage 8. Distribution Explanation of the steps: 1. Raw Water Intake: The first step is to collect the raw water from a source, such as a river, lake, or groundwater. 2. Screening: The raw water is passed through screens or filters to remove large debris, such as leaves, twigs, and other suspended solids. 3. Coagulation and Flocculation: Coagulants, such as aluminum sulfate or ferric chloride, are added to the water to destabilize the suspended particles, causing them to clump together (flocculation) and form larger, heavier particles. 4. Sedimentation: The flocculated particles settle out in a sedimentation tank, leaving the clarified water on the top. 5. Filtration: The clarified water is then passed through a filtration system, typically using sand, gravel, or other media, to remove any remaining suspended particles and microorganisms. 6. Disinfection: The filtered water is then disinfected, usually with chlorine or other disinfectants, to kill any remaining microorganisms and ensure the water is safe for consumption. 7. Storage: The treated water is stored in a reservoir or tank before being distributed to the public. 8. Distribution: The treated and disinfected water is then distributed through a network of pipes to the consumers. Regarding the importance of safety equipment in the chemistry laboratory: a) Laboratory coat: Protects the body and clothing from spills, splashes, and exposure to hazardous chemicals. b) Safety goggles: Protect the eyes from potential chemical splashes, flying debris, or other hazards. c) Gloves: Protect the hands from direct contact with chemicals, preventing skin absorption or irritation. d) Protective masks: Prevent the inhalation of hazardous fumes, vapors, or particulates, ensuring respiratory safety. These safety equipment items are crucial in the chemistry laboratory to minimize the risk of exposure to hazardous substances and to protect the health and well-being of the laboratory personnel.

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Using a schematic diagram ,illustrate the correct sequence of urban water treatment. (a) Briefly explain the importance of a laboratory coat, safety goggles, gloves and protective masks as safety equipment in the Chemistry laboratory.

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