River Water Treatment in Kenya

For a world’s leading breeder, producer and marketer of ornamental plants

Breeder, producer and marketer of ornamental plants

Task

The company’s breeding work involves bedding and balcony plants, poinsettias, shrubs, and cut flowers. The company serves all relevant markets with eleven production sites and distribution companies in Europe, Africa, Asia and America. The existing plant at the Kenia production site could no longer withstand the company’s continuously increasing demands. ATN was initially commissioned to plan a new river water treatment plant, then to construct this plant.

Targets/Challenges

How can we find a practical solution with the available resources - easy handling and maintenance as well as affordable
The filter used in the past could not be converted but had to be replaced completely
UV should be used in future to reduce the use of chlorine - first water has to be filtered properly (low transmission)
UV-disinfection was insufficient due to the extensive piping system since it does not offer a depot effect
Additional chlorine disinfection necessary as so- called transport chlorination

Existing Situation

First, the river water was fed into a tailings pond, then filtered and disinfected with chlorine

The existing filter was far too coarse to remove turbiditiy sufficiently

More and more chlorine was being added, although it was completely used by the numerous ingredients in the water before a sufficient disinfecting effect could take place

Particulate material in the water blocks the dripper - no reliable and constant watering in greenhouses

Highly chlorinated water damages vegetation and impairs growth before an adequate disinfecting effect could take place

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