Water Treatment Essentials

Water Treatment Principles



Enhancing the quality of water involves disinfection plus purification of untreated surface and ground water.

Community Level. A public/private water treatment facility aims to make water safe to consume and pleasant to taste, whilst ensuring there is enough water to provide the demands of the neighborhood.

Raw, untreated water arises from an underground aquifer (via wells) or surface water sources like a river or lake. It flows or perhaps is pumped to a treatment facility. The moment it can be there, water is treated beforehand to remove debris - like leaves and silt. This goes through a few treatment processes, which include disinfection and filtration using chemicals or physical processes, eliminating microorganisms that induce diseases. When the treatment solutions are completed, water flows out by way of a system of pumps and pipes, which is often referred to as the distribution system.



There is a slight difference of water treatment process at various places, depending on the technology with the plant and water would have to be processed, nevertheless the fundamental principles are mainly exactly the same.

Coagulation / Flocculation. At the coagulation state, liquid aluminium sulfate or alum, and also at times polymer, is placed in untreated/raw water. This mixture causes tiny dirt particles in water being fastened together or coagulated. Then, collections of dirt particles join together to make bigger, heavier particles Known as flocs - which can be easily removed through filtration/settling.

Sedimentation. When water and floc particles feel the treatment process, they flow into sedimentation basins where water moves slowly, letting heavy floc particles dip for the bottom. Floc collected on the lowermost the main basin is termed sludge. This holds through pipes to achieve the drying lagoons. The sedimentation state is not included in Direct Filtration so, the floc is taken away through filtration.

Filtration. Water goes thru a filter meant to remove water particles. Filters contain layers of gravel and sand, plus other cases, crushed anthracite. Filtration gathers the suspended water impurities and boosts the efficacy of disinfection. Filters are cleaned regularly by means of backwashing.

Disinfection. Before water switches into the distribution system, it can be disinfected to be sure that bacteria that triggers diseases, parasites and viruses is eliminated. Chlorine can be used since it an effective in disinfecting and looking after residual concentration to guard from possible biological contamination seen in it water distribution.

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