sewage

Wastewater refers to the water that is discharged into a drain due to contamination. It is water that has already been used and is therefore not drinkable or usable for any other purpose.

Wastewater occurs in households, industrial companies and other facilities where water is used. It may contain various types of impurities such as organic matter, pollutants, nutrients, heavy metals and other chemical substances. To minimize environmental impact and protect people's health, it is important to properly dispose of and treat wastewater.

The wastewater is transported via a network of sewage pipes to sewage treatment plants, where it is cleaned and treated. Various processes are used in the sewage treatment plant to remove the impurities in the wastewater. These include physical, chemical and biological processes such as sedimentation, precipitation, aeration and filtration. After purification, the wastewater can be discharged into water bodies or reused for irrigation purposes, depending on local regulations and water cycle requirements.

Proper treatment of wastewater is of great importance to reduce environmental pollution, protect water resources and ensure public health. It plays an important role in maintaining the water cycle processes and preserving water quality for future generations.