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Horticulture

Particle-free and low-germ irrigation water.

Particle-free and low-germ irrigation water. Our processes ensure that, in addition to adjusting the EC value, the irrigation water is free of particles and low in germs. We can also suppress algae growth using modern UV systems. In many operations, the use of coarsely filtered surface water or rainwater is no longer feasible. The reasons for this are complex: increasing demands on water hygiene, the need for better filtration to ensure trouble-free dripper operation, the influence on EC values, and growing reservations regarding chemical disinfection.

Typical processes for the horticulture industry:
Iron removal, manganese removal, flocculation, filtration, decarbonization, ion exchange, UV irradiation, reverse osmosis/nanofiltration, disinfection, retention of viruses, spores, etc., ultrafiltration.

Breeder, producer, and marketer
of ornamental plants

The task

The company’s breeding activities cover the segments of bedding and balcony plants, poinsettias, perennials, and cut flowers. With eleven production sites and sales companies of its own in Europe, Africa, Asia, and America, the company serves all relevant markets. The existing facility at the production site in Kenya could no longer keep up with the company's ever-increasing requirements. ATN was first commissioned to plan a new river water treatment system and subsequently to build the facility.

Goals/Challenges

How to find a practical solution using available resources—easy to operate and maintain, as well as affordable
The existing filter could not be retrofitted and had to be replaced entirely

To reduce chlorine usage, UV disinfection was proposed; however, the water must first be filtered until clean (low transmission)
Due to the extensive and long piping system, UV disinfection was insufficient as it provides no residual effect
Additional disinfection with chlorine, known as residual chlorination, was necessary

The current situation

River water was first directed into a settling pond, then filtered and disinfected with chlorine

The existing filter was far too coarse to remove the suspended solids

Increasing amounts of chlorine were used, but it was completely depleted by the various substances in the water.

Particulate contaminants in the water clogged the drippers, making reliable, consistent irrigation in greenhouses impossible

Water with extremely high chlorine content causes plant damage and stunts growth

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Horticulture

Breeder, producer, and marketer of ornamental plants

Breeder, producer, and marketer
of ornamental plants