Question

What are the various constituents of domestic sewage? Discuss the effect of sewage discharge in a river.

Answer 1

Almost every activity involves the use of water. During use, this water becomes soiled. Dirty water is made up of lather mixed with oil, as well as black and brown water that is drained down the drains of showers, toilets, and laundries, among other places. Sewage is another name for wastewater. Water is a valuable resource that should not be squandered.

complete answer:
Sewage is wastewater that is discharged from residences, hospitals, industries, offices, and other locations. Rainwater that runs down the streets during a storm is also included. Many harmful substances are present in the water that runs off the roads and rooftops. Sewage is a type of waste that is liquid in nature. Impurities are dissolved and suspended in wastewater. Contaminants are the term for these impurities.
The waste water (sewage) discharged from residential areas is known as domestic sewage. Dissolved materials in the form of both organic and inorganic compounds, such as toxic metal ions, nitrates, and ammonia, are among the constituents. Colloidal particles can be found in a variety of organic and inorganic forms, including feces, paper, cloth fibers, bacteria, and more. Sand and clay are the most common suspended impurities.
Domestic sewage stimulates microbial growth in order for the decomposition process to take place because it is high in biodegradable or organic matter. This increases the water's biochemical oxygen demand, causing mineral pollution or eutrophication. It gives the water a bad color and odor, as well as allowing for the spread of waterborne diseases.

Note:
Treatment of sewage is carried out in order to obtain water for future use. All humans require clean water as a basic need. It is required for drinking, cooking, and washing, among other things. Water scarcity will inevitably result from population growth, pollution, industrial expansion, and resource mismanagement. Water is required for life to exist on this planet.