please solve this question biology class 7 cbse don't incomplete answer full questions for the correct questions. If that incomplete or unrelated answer I will report. Is that complete and correct answer related to the question, I will mark as brainliest.
Answers
Answer:
Sludge: Sludge is a semi-solid slurry that can be produced from a range of industrial processes, from water treatment, wastewater treatment or on-site sanitation systems. ... Industrial wastewater treatment plants produce solids that are also referred to as sludge.
Drip irrigation: Drip irrigation is a type of micro-irrigation system that has the potential to save water and nutrients by allowing water to drip slowly to the roots of plants, either from above the soil surface or buried below the surface. The goal is to place water directly into the root zone and minimize evaporation.
Bawris: Bawris are the traditional way of water harvesting. Bawris are deep wells dug in the ground which have steps to reach the water stored.
The chemicals most commonly used as primary disinfectants are chlorine, chlorine dioxide and ozone.
Clarified water from wastewater
Wastewater is collected and passed through bar screens where plastic bags, sticks, cans, napkins, etc. are removed. This water then enters a grit and a sand removal tank. The speed of the water is decreased so that the sand particles get settled at the bottom.
The factors responsible for the depletion of water table are as follows: 1)Increasing population - As a result of increasing population, all the facilities such as houses, shops, roads, offices, pavements, etc. ... 2) Increasing industries - Most of the stages of manufacturing processes in industries require water.
Answer:
◇Fill In the blanks◇
1)Pollutants
2)aquifer
3)Infilteration
4)Sewage
Answer The Following:-
1) What Is Sludge
=Sludge is one of the by-products of wastewater treatment along with biogas. Sludge is human waste (like faeces), left during sewage treatment. Since it is organic waste, it is used to produce biogas and manure.
2)What Is drip irrigation
=Drip irrigation is one of the irrigation practices followed in order to prevent wastage of water. In this method, water is allowed to fall drop by drop at the roots of the plants. By this method, plants get sufficient water and wastage of water by flooding the field is also prevented.
3)What Is bawris
=Bawris are the traditional way of water harvesting. Bawris are deep wells dug in the ground which have steps to reach the water stored.
4)what is the two disinfect water
=The two chemicals used in the disinfection of water are chlorine and ozone.
◇Answer in detail◇
1)
Solution:
Solution:Wastewater is passed through bar screens which remove large objects like rags, sticks, cans, plastic packets, napkins etc.
Solution:Wastewater is passed through bar screens which remove large objects like rags, sticks, cans, plastic packets, napkins etc.Water then goes through Grit and Sand removal tank, where sand, grit and pebbles settle down.
Clarified water is then passed through an aerator tank where air is pumped into the water. It helps aerobic bacteria to grow which decompose organic matter like human waste.
2)
Solution:The factor responsible for the depletion of water table:Increasing industries:
The higher the number of industries will require more water for their daily use, which will affect groundwater.
Increasing population: The higher the number of individuals, the higher the need for daily use, which will lead to a decrease in the groundwater.
Agricultural activities: In a way, an increasing number of agricultural fields will help the population but more number of the fields will lead to more irrigation systems.
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