What happens in primary treatment of wastewater?
Primary treatment removes material that will either float or readily settle out by gravity. It includes the physical processes of screening, comminution, grit removal, and sedimentation.
What are the steps of treatment of wastewater?
There are three main stages of the wastewater treatment process, aptly known as primary, secondary and tertiary water treatment. In some applications, more advanced treatment is required, known as quaternary water treatment.
What are the 3 stages of wastewater treatment?
The three stages of wastewater treatment are known as primary, secondary and tertiary. Each stage purifies water to a higher level. In some applications, only one or two stages are necessary. The level of treatment necessary depends on the water's intended use case, and what environment it will be discharged into.
What is preliminary treatment of wastewater?
Preliminary treatment is used to remove screenings and grit that enters a wastewater treatment plant from a sewered system. Preliminary treatment will have little effect on pathogens in the liquid wastestream.
What is the first step in primary treatment plant?
Wastewater Primary Treatment is the first step in the water treatment process meant for removing suspended solids (TSS), oil and grease, colour, and odour. The key components in this step are screens, grit chamber, flow equalization tank, and clarifier.