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प्रश्न
Three statements are provided here which define the terms –
- sludge
- sewage and
- wastewater.
Pick out the correct definition for each of these terms.
- The settled solids are removed in wastewater treatment with a scraper.
- Water from the kitchen is used for washing dishes.
- Wastewater is released from homes, industries, hospitals and other public buildings.
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उत्तर
- The settled solids that are removed in wastewater treatment with a scraper – sludge
- Water from kitchen used for washing dishes – wastewater
- Wastewater released from homes, industries, hospitals and other public buildings – sewage.
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संबंधित प्रश्न
Dried ______ is used as manure.
Describe the steps involved in getting clarified water from wastewater.
Explain how sludge is treated.
Study the following statements about ozone:
- It is essential for breathing of living organisms.
- It is used to disinfect water.
- It absorbs ultraviolet rays.
- Its proportion in air is about 3%.
Which of these statements are correct?
Which of the following is/are products of wastewater treatment?
The system of a network of pipes used for taking away wastewater from homes or public buildings to the treatment plant is known as
Which of the following is not a source of waste water?
State whether the following statement is True or False. In case a statement is false, write the correct statement.
Wastewater could be reused
Given below is a jumbled sequence of the processes involved in a wastewater treatment plant. Arrange them in their correct sequence.
- Sludge is scraped out and skimmer removes the floating grease.
- Water is made to settle in a large tank with a slope in the middle.
- Large objects like plastic bags are removed by passing wastewater through bar screens.
- Sand, grit and pebbles are made to settle by decreasing the speed of incoming wastewater.
- Wastewater enters a grit and sand removal tank.
What is sludge?
