What Happens to the Sludge Produced During the First Two

question 69

Multiple Choice

What happens to the sludge produced during the first two phases of sewage processing? (Select all that apply)

• A) It is used as agricultural fertilizer since it contains high levels of NPK and organic material
• B) It is converted into biofuels because of its high CO₂ levels
• C) It can be converted into biogases such as methane
• D) It can be heat-treated and used to make construction materials

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Definitions:

Obsessive-Compulsive Disorder

A mental disorder characterized by recurrent, unwanted thoughts (obsessions) and/or repetitive behaviors (compulsions) that the person feels the urge to perform in response to an obsession.

Antidepressant Drugs

Medications designed to improve symptoms of depression by altering chemical balances within the brain.

Effective

Achieving a desired goal or result in an efficient and impactful manner.

Negative Symptoms

Characteristics associated with a reduction or lack of normal functions, often observed in certain mental health conditions, like schizophrenia.