Viemärijätevedet

Viemärijätevedet refer to wastewater that is collected and transported through a sewer system. This water originates from various sources, including domestic households, commercial establishments, and industrial processes. Domestic wastewater typically contains human waste, detergents, food scraps, and other household chemicals. Commercial wastewater can include similar components, often with higher concentrations of grease and chemicals from businesses like restaurants and laundries. Industrial wastewater is highly variable and can contain a wide range of pollutants specific to the industry, such as heavy metals, solvents, and organic compounds.

The primary purpose of a sewer system is to safely convey these wastewater streams away from populated areas to treatment facilities. This prevents the spread of diseases and protects the environment from contamination. The collection network consists of underground pipes, manholes, and pumping stations that work together to move the water, often by gravity, but sometimes requiring mechanical assistance.

Upon reaching a wastewater treatment plant, viemärijätevedet undergo a series of processes to remove pollutants and reduce their environmental impact before being discharged back into natural water bodies or reused. These treatment stages generally include preliminary treatment to remove large solids, primary treatment to settle out suspended solids, secondary treatment to biologically break down organic matter, and sometimes tertiary treatment for further purification. The management and treatment of viemärijätevedet are crucial aspects of public health and environmental protection.