What is the primary method used to treat wastewater?

What is the primary method used to treat wastewater?

Step 1: Understand that wastewater is water that has been used and is no longer clean.
Step 2: Learn that wastewater treatment is the process of cleaning this dirty water.
Step 3: Identify that there are different methods to treat wastewater.
Step 4: Recognize that the primary method used is called biological treatment.
Step 5: Know that biological treatment uses tiny living things called microorganisms.
Step 6: Understand that these microorganisms eat and break down the organic matter in the wastewater.
Step 7: Conclude that this process helps to make the water clean enough to be released back into the environment.

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