- pH adjustment - The raw water into the unit may be from a variety of water
sources that have different chemical properties. Hence pH adjustment is needed
before the purification processes can occur.
- Coagulation - This is the process whereby the charges on colloids (small charged
suspended particles) in the raw water are neutralized, thereby reducing their
repulsive forces which brings them closer together.
- Flocculation - This is the process whereby coagulated colloids are bound to form a floc or floc blanket. Flocculation must take place in areas of low turbulence,
as this enhances the floc or bed formation. Any excess turbulence or agitation
will result in the breaking of the flocs.
- Sedimentation - This is the process whereby the heavy flocs formed during the
flocculation process settle or precipitates.
- Filtration - This process removes particles that remain in the water. The filters
contain media through which the water passes, where the pollutants are trapped
within the media. The type of media used is determined by the specific properties
and composition of the water, and generally arranged in a multi media fashion.
- Disinfection - Its purpose is to destroy bacteria and other micro organisms that
may be present in the filter media and filtered water, as well as to ensure the
required levels of free chlorine in the distribution system.
- Storage - Storage tanks for the potable water can be provided. Often such
facilities are required to pump water to the reticulation network by means of high
lift pumps. The size of such tanks is generally matched to the hourly output
capacity of the specific WPP model installed.
To ensure that the water quality is maintained, Intaka Tech supplies the following
water testing equipment with all their plants:
- Turbiditymeter
- Freechlorinemeter
- pHmeter
- Total dissolved solids meter
