मराठी

Dried ______ is used as manure.

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प्रश्न

Dried ______ is used as manure.

रिकाम्या जागा भरा
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उत्तर

Dried sludge is used as manure.

Explanation:

Sludge is a by product of wastewater treatment. When dried, it contains nutrients that can enrich soil, making it a valuable organic fertilizer for agriculture.

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Wastewater Treatment Plant (WWTP)
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पाठ 13: Wastewater Story - Exercises [पृष्ठ १६४]

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एनसीईआरटी Science [English] Class 7
पाठ 13 Wastewater Story
Exercises | Q 1. (c) | पृष्ठ १६४

संबंधित प्रश्‍न

Describe the steps involved in getting clarified water from wastewater.


Explain the function of bar screens in a wastewater treatment plant.


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


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.

Where underground sewerage systems and refuse disposal systems are not available, the high cost on-site sanitation system can be adopted


Given below is a jumbled sequence of the processes involved in a wastewater treatment plant. Arrange them in their correct sequence.

  1. Sludge is scraped out and skimmer removes the floating grease. 
  2. Water is made to settle in a large tank with a slope in the middle.
  3. Large objects like plastic bags are removed by passing wastewater through bar screens.
  4. Sand, grit and pebbles are made to settle by decreasing the speed of incoming wastewater.
  5. Wastewater enters a grit and sand removal tank.

Describe various steps of cleaning wastewater in a wastewater treatment plant.


What is sludge?


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