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प्रश्न
What is sludge?
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उत्तर
- Semi-solids such as faeces that settle down during wastewater treatment are called sludge.
- This sludge is removed using a scraper and then transferred to a tank where it is decomposed by anaerobic bacteria to produce biogas.
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संबंधित प्रश्न
Explain how sludge is treated.
Name two chemicals used to disinfect water.
Sewage is mainly a
Which of the following is/are products of wastewater treatment?
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.
Sewage is a solid waste which causes water pollution and soil pollution
State whether the following statement is True or False. In case a statement is false, write the correct statement.
Used water is wastewater
State whether the following statement is True or False. In case a statement is false, write the correct statement.
Wastewater could be reused
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.
Describe various steps of cleaning wastewater in a wastewater treatment plant.
