Water Purification and Sewage (Wastewater) Management — Chapter Summary
Maharashtra Board · Class 10 · Water Security
Summary of Water Purification and Sewage (Wastewater) Management for Maharashtra Board Class 10 Water Security.
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Overview
Notice how water changes from dirty river water to safe drinking water through clear stages. Turbidity means reduced clarity of water because of suspended soil and dissolved substances. A Secchi's disc is used to measure this turbidity, and a Nephelometer measures it in NTU. Water purification remov
Key Concepts
Turbidity is the reduction in
Turbidity is the reduction in the cleanliness, clarity, and transparency of water due to suspended soil and other soluble substances. Turbid rainwater
A circular disc painted white
A circular disc painted white and black is lowered into water until the parts are no longer visible. Then it is raised until the white part appears ag
A Nephelometer measures turbidity of water
A Nephelometer measures turbidity of water, and the unit is NTU, which means Nephelometric Turbidity Units.
Water is pumped from the source
Water is pumped from the source through pipelines. Wire mesh prevents fishes and small plants from coming out. During air mixing, water is released fr
Coagulants settle suspended particles
Coagulants settle suspended particles. Alum is the main coagulant, and ferric chloride, ferrous chlorite, ferrous sulphate, and poly aluminium are als
Learning Objectives
- Define turbidity of water and understand how it affects water quality
- Explain how Secchi's disc is used to measure water turbidity
- Understand the main stages of water purification in the correct order
- Distinguish between coagulation, flocculation, sedimentation, filtration, and disinfection
- Identify common coagulants and disinfecting agents used in water treatment
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Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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