38. NCERT Exemplar XXV

Much of the waste we generate at home is flushed down the toilet or poured into the sink. The wastesewagesludge gets worse as a result.

Sewage is typically cleaned up before being disposed of in an aquaticsemiaquaticsubaquatic environment. The same body of water may satisfy the town's water needs. A few simple steps taken at home might lessen the strain the water supply system experiences when cleaning water for human consumption.

 

(i). Food has a lot of fats and oils, especially Indian food. Food particles should not be thrown down the drain because, when they harden, they may clog the pipes. When thrown into open drains, these clog soil pores, making soil less effective at degradingfilteringsedimenting water. Thus, only dustbins should be used to dispose of this waste.

 

(ii). Gas wastesSolid wastesLiquid wastes such as used tea leaves, food scraps, plastic bags, soft toys, cotton, and sanitary towels should not be poured down the sink. Because they obstruct drains and reduce the free flow of nitrogenchlorineoxygen, these wastes slow down the breakdown. 

 

(iii). A wide range of chemicalsphysicalsbiologicals, such as paints, greases, motor oils, machine oils, pharmaceuticals, and insecticides, can kill the microorganisms that filter water and prevent them from decomposing. It would help if you didn't throw these away.