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Sydney Water - Sewrage Treatment
Transcript of Sydney Water - Sewrage Treatment
Sewrage There are three different stages that
sydney water goes through in treating sewrage. 1 Primary Primary is the first stage in
the "Sewrage Cycle".
It involves removing
solids from the wastewter.
Wastewater is filtered through
fine screens to take out solid matter
such as paper cotton tips and plastic.
Heavy particles sink to the bottom and are remonved. Into sedimintation tanks. It is here that human waste settles to the bottom and oils and grease float to the top were they are collected 2 High Rate Primary Like stated in the name, high rate primary is where the waste flows through the plant faster, and less waste is removed. This treatment removes both dissolved and suspended solids, through bacterial decomposition which breaks down this material. The primary effluent (flow) flows into tanks where the bacteria grows and naturally treats the wastewater. The liquid flows into sedimentation tanks where more particles settle to the bottom and are collected. Secondary 3 Tertiary is the final stage of wastewater treatment.It further removes inorganic compounds, and substances such as the plant nutrients nitrogen and phosphorus. Tertiary Further treatment Disinfection can be applied at any treatment level to inactivate disease-causing micro-organisms such as bacteria, viruses and parasites.
During periods of heavy rain, when there are very high flow rates in the wastewater system, wastewater flows may be diverted around some processes at the plants (a partial bypass). By the legandary Daniel.Anderson