in the treatment of waste water ,following steps are involved.(1)aeration (2)nitration (3)chlorination the correct order is (explanation is not necessary, )
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Answer:
2,3,1
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The stages of waste water treatment are (2) Nitration, (1) Aeration and (3) Chlorination.
Explanation:
Waste water treatment is a process of eliminating pollutants present in water.
- There are several stages involved in treating waste water. Firstly removal of solid floating materials, chemical treatment, aeration, sludge treatment and disinfecting water.
- Nitration is a process in the Chemical treatment stage. Where pollutants are reduced and ammonia is converted into nitrates.
- Aeration is the stage where the water is just stored in huge open tanks and is exposed to direct sunlight. This step helps is removal of stink and sedimentation of sludge.
- Chlorination is the process of adding chlorine to water which acts as an antimicrobial and disinfectant. After sludge treatment the water is finally disinfected using chlorine forms.
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