![]() Primary and secondary treatment are often sufficient for many purposes. Not all wastewater treatment plants use tertiary treatment. Tertiary treatment, on the other hand, can achieve levels of water purification that make the water safe for reuse in water-intensive processes or even as drinking water. Primary and secondary treatment typically get wastewater only clean enough to discharge safely into the environment. Tertiary treatment adds a third, more advanced and rigorous level of treatment. Secondary treatment applies additional biological processes like aeration and activated sludge treatment to break down dissolved and suspended biosolids using good bacteria. Primary treatment, which typically removes 50% to 70% of the suspended solids in wastewater, uses physical processes like filtration and settling to remove grit, debris, oil, grease and some lighter solids. Most wastewater treatment systems consist of at least two main treatment processes: primary and secondary treatment, with some additional preliminary methods. What is tertiary treatment in wastewater? To answer this question, let’s look into how treatment plants generally work and how the main stages of wastewater treatment progress. How Does Tertiary Wastewater Treatment Work?.The guide below will discuss how tertiary wastewater treatment works and elaborate on some different types of tertiary filtration and disinfection methods. It affords the peace of mind of knowing that the treated wastewater is clean, sanitary, compliant with regulations and safe enough for drinking or reuse. Tertiary treatment is also critical in many situations. In the wastewater industry, plants often focus on primary and secondary treatments, which do most of the work of preparing wastewater for discharge into the environment. ![]() What Is Tertiary Wastewater Treatment, and How Does It Work?
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