Advertisements
Advertisements
प्रश्न
Drains get blocked by ______ and ______.
Advertisements
उत्तर
Drains get blocked by plastic bags and cooking oil.
Explanation:
- Grease from cooking can solidify and adhere to the pipes, while hair accumulates and forms clumps.
- plastic bags Both obstruct the flow of water and cause blockages in the drainage system.
APPEARS IN
संबंधित प्रश्न
Dried ______ is used as manure.
Explain how sludge is treated.
Name two chemicals used to disinfect water.
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.
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.
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.
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.
