Explain, in your own words and step-by-step, what happens to wastewater once it reaches the treatment plant. (6 steps)

After wastewater reaches the treatment plant, there are two process applied consecutively: Primary treatment and Secondary treatment.

Explanation:

When water reaches to the treatment plant there are two process for the treatment: Primary Treatment: Here most of the solid particles are filtered out. The screening process removes the large floating  objects such as rags and sticks that may hamper the pipes. Then the grit chamber sediments the sands, stones, cinders etc. in the sedimentation tank.Secondary Treatment : It is the process of removing the organic wastage by using the bacteria. The trickling filter and the activated sludge process removes about 80% of the organic waste from the water.