Waste Water Management
- Water is essential for life.
- About 71% of the earth’s surface is covered with water. It is present as ground water, in seas, oceans, rivers, lakes, ice caps, and in atmosphere.
- Wells, rivers, ground water reservoirs or lakes are sources of fresh water.
- Ocean and sea water is not potable because they contain large amount of dissolved salts.
- Water is a necessity for every form of life. It is used for domestic activities, irrigation, industrial purposes, etc.
- 22nd March is celebrated as World Water day.
Water mixed with waste matter is known as waste water.
- Sewage is the wastewater carried away in sewers or drains.
- It is released from homes, industries, offices, hospitals, etc.
- It is a mixture of various contaminants, which include the following:
- Suspended solids
- Organic impurities such as animal waste, urine or human faeces, pesticides, kitchen waste, etc.
- Inorganic impurities such as chemicals (nitrates, phosphates, etc.)
- Nutrients such as phosphorus and nitrogen
- Disease-causing bacteria and other microbes
- Water is necessary for every form of life. Clean water is the basic requirement of humans.
- Cleaning of wa…
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