secondary treatment of water uses
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Secondary treatment is a treatment process for wastewater (or sewage) to achieve a certain degree of effluent quality by using a sewage treatment plant with physical phase separation to remove settleable solids and a biological process to remove dissolved and suspended organic compounds.
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Secondary treatment is a treatment process for wastewater (or sewage) to achieve a certain degree of effluent quality by using a sewage treatment plant with physical phase separation to remove settleable solids and a biological process to remove dissolved and suspended organic compounds.
hope it helps
Answered by
1
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Secondary Treatment of waste water is a biological process which breaks down dissolved and suspended organic solids by using naturally occurring micro-organisms. The settled wastewater enters aeration tanks. Air is blown into the liquid to provide oxygen for mixing and to promote the growth of micro-organisms or the active biomass. The “active biomass” uses the oxygen and break down the organic pollutants and nutrients in the wastewater. They grow and reproduce here.
From the aeration tanks, the mixture of wastewater and micro-organisms passes into a secondary sedimentation tank where the micro organisms are allowed to settle under gravity to the bottom of the tank. This sediment is called the activated sludge.
Some of this sludge is recycled to the inlet of the aeration tank to maintain the biomass. The remainder is pumped to another tank called anaerobic sludge digesters for further treatment. Here the anaerobic bacteria digest the bacteria and fungi.
The gas produced during this anaerobic process contains a large amount of methane which is used to form biogas and can be used as energy source. The clarified water from the secondary settling tank is discharged into the natural water bodies like river and streams.
✌️___________✌️
Secondary Treatment of waste water is a biological process which breaks down dissolved and suspended organic solids by using naturally occurring micro-organisms. The settled wastewater enters aeration tanks. Air is blown into the liquid to provide oxygen for mixing and to promote the growth of micro-organisms or the active biomass. The “active biomass” uses the oxygen and break down the organic pollutants and nutrients in the wastewater. They grow and reproduce here.
From the aeration tanks, the mixture of wastewater and micro-organisms passes into a secondary sedimentation tank where the micro organisms are allowed to settle under gravity to the bottom of the tank. This sediment is called the activated sludge.
Some of this sludge is recycled to the inlet of the aeration tank to maintain the biomass. The remainder is pumped to another tank called anaerobic sludge digesters for further treatment. Here the anaerobic bacteria digest the bacteria and fungi.
The gas produced during this anaerobic process contains a large amount of methane which is used to form biogas and can be used as energy source. The clarified water from the secondary settling tank is discharged into the natural water bodies like river and streams.
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