Activity 15.9
Find out how the sewage in your locality is treated. Are there mechanisms in place to ensure that local water bodies are not polluted by untreated sewage.
Find out how the local industries in your locality treat thelr wastes. i Are there mechanisms in place to ensure that the soil and water are not polluted by this waste?
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Sewage is treated by sewage plant in which poluted sewage water is purified to clean water and makes it drinkable!
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Answer:
Sewage can be treated close to where the sewage is created, which may be called a "decentralized" system or even an "on-site" system (in septic tanks, biofilters or aerobic treatment systems). Alternatively, sewage can be collected and transported by a network of pipes and pump stations to a municipal treatment plant.
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