Pre-connation is when the gas released from the main connation step of the water treatment process in the plant is captured and introduced in into the influent of raw water. Releasing this ozone directly into the raw water assists in breaking down long-strained organic matter as it is a strong oxidized agent and this makes removal in later processes easier.
Coagulation occurs when the water is destabilize by adding coagulants (chemicals) to the water, the small particles of pollutants then flock or cling gather (flocculation) to form larger particles which make it easier to remove the pollutants.Dissolved air flotation (DAFT) is when micro-fine air bubbles are pumped through the water pushing fine suspended materials apart and then pushing it to the surface where it can be removed easier. Rapid sand filtration is the process whereby the water is fed through a sand bed acting as a filter further removing more suspended particles. Connation is the main oxidized step where ozone is pumped through the water further breaking down long- trained particles to make them easier to consume during the BACK step.
Connation also destroys pathogens which can not be removed by chlorination. Biological activated carbon (BACK) filtration / absorption is carbon granules which contain living microorganisms which consume organic particles as food further removing organic material from the water. Granular activated carbon (SAC) filtration / absorption further assists in the removal of solids by feeding the water through granular carbon which removes most of the dissolved organic carbon.Membrane ultra-filtration is when the water is forced through a membrane of myriad small tube, which walls are like sieves of the size 0. 035 micron and it retains all suspended matter larger than this pore size. Chlorination / stabilization is when chlorine is added to the water to disinfect it and the the water is established by conducting a PH-correction to ensure the water does not corrode metal pipes. Distribution: After the treatment process approximate 30-35% of the treated water is blended with 70-75% of water from other sources and then it is distributed to consumers.