write define of sewage sewrages sewers and describe the sentence "water for live" and give all types of impurities present in the sewage
Sewage is the wastewater containing solid and liquid wastes and pollutants .It is produced by humans from homes, industries, hospitals, offices and other places that use water for their various processes.
The pipe carry away the wastewater from house to the line of sewer. These pipes are known as sewer pipes. They form a network over a small area which is termed as sewer. These pipes merge into larger pipes where the sewage of larger area is collected and is termed as sewerage.
" Water for life " means life on earth is not possible without water. Plants need water to carry out photosynthesis and make food. Majority of live forms depends upon plants for food. Water is important for us as it provides medium for biochemical reactions of body to occur. Thus there is no life without water.
Components of sewage impurities and their characteristics | |
Organic components | Human faeces, animal wastes, oil, urea (urine) pesticides, herbicides, fruits, and vegetable wastes etc. |
Inorganic components | Nitrates, phosphates metals |
Nutrients | Phosphorus and nitrogen |
Bacteria | The germs which cause cholera and typhoid |
Microbes | The germs which cause dysentery |
@ Mansoor : Good work. Keep posting!!
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