Water Treatment
Water treatment is the process of removing all those substances, whether biological,
chemical or physical that are potentially harmful in water supply for human and domestic
use. This treatment helps to produce water that is safe, palatable, clear, colourless and
odourless. Water also needs to be non-corrosive, meaning it will not cause damage to
pipework.
In urban areas, many people live close together and they all need water. This creates a
demand for large volumes of safe water to be supplied reliably and consistently, and this
demand is growing. As urban populations increase, there is a need to find new sources to
meet the growing demand. If groundwater is available this can often be used with minimal
treatment but any surface water source will need to be treated to make it safe. For towns and
cities, the water supply is then best provided by large mechanised water treatment plants that
draw water from a large river or reservoir, using pumps. The treated water is then distributed
through pipeline
Water Treatment Process
Public drinking water systems use different water treatment methods to provide safe drinking
water for their communities. Public water systems often use a series of water treatment steps
that include screening, aeration, coagulation, flocculation, sedimentation, filtration, and
disinfection. The water utility (the organisation that runs the treatment plants and water
distribution system) will ensure by regular analysis of the water that it adheres to quality
standards for safe water.
Screening
To protect the main units of a treatment plant and to aid in their efficient operation, it is
necessary to use screens to remove any large floating and suspended solids that are present in
the inflow. These materials include leaves, plastics, twigs, paper, rags and other debris that
could obstruct flow through the plant or damage equipment. There are coarse and fine
screens.
Coarse screens are steel bars spaced 5–15 cm apart, which are employed to exclude
large materials (such as logs and fish) from entering the treatment plant, as these can
damage the mechanical equipment. The screens are made of corrosion-resistant bars and
Water treatment is the process of removing all those substances, whether biological,
chemical or physical that are potentially harmful in water supply for human and domestic
use. This treatment helps to produce water that is safe, palatable, clear, colourless and
odourless. Water also needs to be non-corrosive, meaning it will not cause damage to
pipework.
In urban areas, many people live close together and they all need water. This creates a
demand for large volumes of safe water to be supplied reliably and consistently, and this
demand is growing. As urban populations increase, there is a need to find new sources to
meet the growing demand. If groundwater is available this can often be used with minimal
treatment but any surface water source will need to be treated to make it safe. For towns and
cities, the water supply is then best provided by large mechanised water treatment plants that
draw water from a large river or reservoir, using pumps. The treated water is then distributed
through pipeline
Water Treatment Process
Public drinking water systems use different water treatment methods to provide safe drinking
water for their communities. Public water systems often use a series of water treatment steps
that include screening, aeration, coagulation, flocculation, sedimentation, filtration, and
disinfection. The water utility (the organisation that runs the treatment plants and water
distribution system) will ensure by regular analysis of the water that it adheres to quality
standards for safe water.
Screening
To protect the main units of a treatment plant and to aid in their efficient operation, it is
necessary to use screens to remove any large floating and suspended solids that are present in
the inflow. These materials include leaves, plastics, twigs, paper, rags and other debris that
could obstruct flow through the plant or damage equipment. There are coarse and fine
screens.
Coarse screens are steel bars spaced 5–15 cm apart, which are employed to exclude
large materials (such as logs and fish) from entering the treatment plant, as these can
damage the mechanical equipment. The screens are made of corrosion-resistant bars and
