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SOURCES,IMPACT AND MANAGEMENT OF WATER POLLUTION, :pencil2: : - Coggle…
SOURCES,IMPACT AND MANAGEMENT OF WATER POLLUTION
Sewage treatment
Sewage has to be disposed of, and this is usually into bodies of water, so it must be treated beforehand. The main aim of sewage treatment is to reduce the biological oxygen demand (BOD) of the sewage.
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Improve sanitation
An improved sanitation facility is defined as one that separates human excreta from contact with humans. This can be achieved using a variety of toilets and latrines.
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Industrial processes
Industrial processes use a big range of chemicals , this can be harmful for humans and the environment. Many of these chemicals end up in water bodies and these cause pollution. Outfalls from industry often fall into rivers and lakes
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Domestic Waste
Domestic waste is water carried away from houses or other buildings, these houses are from cities and small villages. It is carried away by drains, these drains are called sewers, this is then dumped or turned into a form that is less harmful.
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Water treatment
To make water potable it undergoes coagulation treatment, and is filtered and disinfected Coagulants make particles in the water stick together and settle to the bottom of the container. The water is then filtered through sand. To kill any disease-causing organisms (pathogens) that may remain, chlorine is added to the filtered water as a disinfectant, this process is called chlorination
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