Wastewater Engineering

Paper Summary:

The treatment of wastewater is divided into three main categories: Primary treatment, secondary treatment and tertiary treatment, where each stage contains several steps. This paper examines this purification and treatment process and explains each stage step-by-step.

From the Paper:

"The primary treatment stage involves the removal of physical contamination which includes grit, grease and solid particles. The first stage in this is a screening process, which filters our large particles. The next stage is grit removal, this is a settling stage where grit is allowed to settle out of the water under low flow conditions (Manahan 226). The final stage of the primary treatment is grease removal, which is achieved by allowing the wastewater to settle, with the grease materials floating on top. This top layer is then scraped off."

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