tertiäärikäsittelyyn

Tertiary treatment, also known as tertiary treatment or tertiary wastewater treatment, is the third stage of wastewater treatment after primary and secondary treatment. The primary treatment involves the removal of large solids and grease, while the secondary treatment focuses on the removal of biodegradable organic matter and suspended solids through biological processes. Tertiary treatment aims to further purify the wastewater to meet more stringent environmental standards and to remove any remaining pollutants that may pose a risk to aquatic life and human health.

The primary goals of tertiary treatment include the removal of nutrients such as nitrogen and phosphorus, the reduction of pathogens, the removal of trace organic compounds, and the improvement of water clarity. Various technologies are employed in tertiary treatment, such as filtration, advanced oxidation processes, and chemical precipitation. Filtration methods, including sand filters and membrane filtration, are commonly used to remove fine particles and microorganisms. Advanced oxidation processes, such as ozone treatment and ultraviolet (UV) radiation, are effective in degrading organic compounds and inactivating pathogens. Chemical precipitation involves the addition of chemicals to remove dissolved metals and other contaminants.

Tertiary treatment is essential for protecting water bodies from pollution and ensuring the safety of drinking water supplies. It is particularly important in areas with high population densities, industrial activities, and agricultural runoff, where wastewater discharge can have significant environmental impacts. The implementation of tertiary treatment can help achieve water quality standards set by regulatory bodies and promote sustainable water management practices.