Tertiary treatment

Tertiary Treatment

Tertiary treatment (pronunciation: /ˈtɜːr.ʃi.er.i ˈtriːt.mənt/) is the final stage in the wastewater treatment process. The term originates from the Latin word "tertiarius," meaning "third."

Definition

Tertiary treatment, also known as advanced treatment, involves the removal of nutrients such as phosphorus and nitrogen from wastewater that has already undergone primary and secondary treatment. This process is crucial in preventing water pollution and promoting water sustainability.

Process

The process of tertiary treatment includes several steps:

1. Filtration: This step involves passing the wastewater through sand filters to remove any remaining solids.
2. Nutrient Removal: Nutrients like phosphorus and nitrogen are removed to prevent eutrophication in water bodies.
3. Disinfection: The wastewater is disinfected to kill any remaining bacteria or viruses before it is discharged back into the environment.

Importance

Tertiary treatment is important for several reasons:

1. It helps to prevent water pollution by removing harmful nutrients from wastewater.
2. It allows for the reuse of treated wastewater for purposes such as irrigation and industrial cooling.
3. It contributes to water sustainability by reducing the demand for fresh water.

Related Terms

• Primary Treatment
• Secondary Treatment
• Wastewater Treatment
• Water Pollution
• Eutrophication

External links

• Medical encyclopedia article on Tertiary treatment
• Wikipedia's article - Tertiary treatment

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