Aquatic & Terrestrial Pollution

Lower cost but reduced pollutant removal

Lower energy consumption but less effective disinfection

Higher efficiency but increased risk of pathogen contamination

Reduced environmental impact but decreased water reuse potential

Sedimentation tank and aeration basin

Septic tank and drainage field

Chlorination unit and UV disinfection system

Reverse osmosis membrane and activated carbon filter

To regulate air emissions from factories

To protect public health by regulating public drinking water supplies

To conserve natural resources

To promote sustainable agriculture

Establishing national parks

Setting maximum contaminant levels (MCLs) for regulated contaminants

Regulating the discharge of pollutants into surface waters

Promoting the use of renewable energy

Sludge

Effluent

Biosolids

Sediment

Biological breakdown of organic matter

Disinfection of pathogens

Physical separation of solids from liquids

Nutrient removal

Using screens to remove large objects

Allowing heavy particles to settle in sedimentation tanks

Biological breakdown of organic matter by microorganisms

Filtration and disinfection using UV light

To increase the temperature of the water

To reduce the spread of disease

To add pollutants to the water

To decrease water scarcity in all areas

By increasing the amount of pollutants in water bodies

By preventing pollution of surface water, groundwater, and coastal areas

By promoting the spread of waterborne diseases

By decreasing the availability of water resources

It is immediately discharged into a nearby stream

It is broken down by bacteria through anaerobic digestion

It is filtered and used for irrigation

It is converted into drinking water