Infrastructure 

Water Treatment Plants

Karibib Water Treatment Plant

Capacity of plant:           216 m3/h Source of water :             Swakoppoort Dam Year of construction:      1989 Treatment steps :      Chemical dosing, flash mixing, flocculation, settling, filtration, disinfection.

Description of Plant :

The Karibib purification scheme consists of a complete treatment process as given above.

The process starts with the addition of flocculant and lime at the flash mixing point . The flocculent is dosed to bind the suspended solids in the water into bigger size particles called floc. The lime is added to reduce the corrosivity of the water. This helps to prevent pipelines and piping from rusting.

After the flash mixer, the water flows through the flocculation channels where the flocculant and the suspended particles in the water from floc. The water and floc then enters the horizontal settling tank where the floc settles to the bottom and is removed while the clear water with lighter floc flows over into channels that lead to the sand filters . These take out the rest of the floc.

The water subsequently collects into a clear water sump , where chlorine gas is mixed into the water for disinfection to ensure that the water contain no micro-organisms harmful to human beings.

After disinfection, the water is pumped to the 1 350m 3 reservoir for storage and distribution to the town of Karibib.

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