With reference to the treatment of polluted water at home by aeration, filtration, chlorination processes answer the following questions.
(a) What changes did we observe in the appearance of liquid after aeration? Did aeration change the odour?
(b) What is removed by the sand filter?
(c) Does chlorine change the colour of treated water?
(d) Do chlorine have an odour?
Answers
Answer:
Explanation:
The colour of liquid is changed after aeration. Air is pumped into clarified water to allow the growth aerobic bacteria to grow. These, bacteria consume human waste, food waste, soap which clean the water change its colour also.
Sand filtration is used for the removal of suspended matter, as well as floating and sinkable particles. The wastewater flows vertically through a fine bed of sand and/or gravel. Particles are removed by way of absorption or physical encapsulation. If there is excessive pressure loss on the filter, it must be rinsed.
In addition to providing a residual, adding chlorine to water will also: oxidize iron, manganese, taste and odour compounds, remove colour in the water, destroy hydrogen sulphide, and aid other water treatment processes, such as sedimentation and filtration.
However, when chlorine in pool water combines with pee, poop, sweat, and dirt from swimmers' bodies, chemical irritants called chloramines are produced. These chloramines give off a chemical odor, cause eyes to get red and sting, and use up the chlorine, meaning there is less to kill germs.
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Answer:
(a)The colour of liquid is changed after aeration. Air is pumped into clarified water to allow the growth aerobic bacteria to grow. These, bacteria consume human waste, food waste, soap which clean the water change its colour also.
(b)Sand filtration is used for the removal of suspended matter, as well as floating and sinkable particles. The wastewater flows vertically through a fine bed of sand and/or gravel. Particles are removed by way of absorption or physical encapsulation. If there is excessive pressure loss on the filter, it must be rinsed.
(c)In addition to providing a residual, adding chlorine to water will also: oxidize iron, manganese, taste and odour compounds, remove colour in the water, destroy hydrogen sulphide, and aid other water treatment processes, such as sedimentation and filtration.
Explanation: