Contaminants In Waste water Treatment are given below:
Suspended solids
Lead to the development of sludge deposits and anaerobic conditions when untreated waste water is discharged into the aquatic environment.
Dissolved inorganics
Inorganic constituents such as calcium, sodium, and sulfate are added to the original domestic water supply as a result of water use and may have to be removed if the waste water is to be reused.
Refractory organics
Heavy metals
Heavy metals are usually discharged to waste water from commercial and industrial activities and have to be removed if the waste water is to be reused
Suspended solids
Lead to the development of sludge deposits and anaerobic conditions when untreated waste water is discharged into the aquatic environment.
Dissolved inorganics
Inorganic constituents such as calcium, sodium, and sulfate are added to the original domestic water supply as a result of water use and may have to be removed if the waste water is to be reused.
Refractory organics
These organics tend to resist conventional methods of waste water treatment. Typical examples include surfactants, phenols, and agricultural pesticides.
Nutrients (P, N2&C)
When discharged into the aquatic environment, these nutrients can lead to the growth of undesirable aquatic life. When discharged in excessive amounts on land, they can also lead to the pollution of groundwater.
Priority pollutants
Organic and inorganic compounds selected on the basis of their known or suspected carcinogenicity, or high acute toxicity. Many of these compounds are found in waste water.
Nutrients (P, N2&C)
When discharged into the aquatic environment, these nutrients can lead to the growth of undesirable aquatic life. When discharged in excessive amounts on land, they can also lead to the pollution of groundwater.
Priority pollutants
Organic and inorganic compounds selected on the basis of their known or suspected carcinogenicity, or high acute toxicity. Many of these compounds are found in waste water.