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Dutch propagator recirculating via Opticlear Diamond installation

At WPK Vegetable Plants, they've been working with Water IQ's Opticlear Diamond installation for some time now. This installation ensures that the water with the fertilizers in it, is used in the best possible way, and can then be reused again. That way, they try to make the impact on the environment as low as possible.

"We haven't dumped our water in the ditch for years, but a substantial amount was discharged via the sewers. In the propagation of ornamentals, crop protection products are used that we absolutely cannot use with vegetable plants. In between cultivations, all the water, including the still useful fertilizers and crop protection products, were discharged into the sewer. Through the sewage, some of these products could enter the environment, and that's an undesirable situation.

"Because we work with seasonal products, so far it has been impossible to avoid this. But with the Water IQ installation, we can purge 99% of the crop protection products from the water, before it's discharged in the sewage. It's not even necessary to discharge into the sewer anymore, because we can recycle the used and purified water ourselves. However, until we can be 100% sure that the installation works properly, we will continue to discharge our clean water into the sewer.

"In addition to removing fertilizers and crop protection products, the installation is also used to kill viruses, bacteria and fungi. Of course, these were also removed from the water in the past, but back then it was done through heating. The Opticlear Diamond installation is profitable both for the environment and for our wallet. With the new method, we only use very little electricity for each cubic meter of purified water. Purification by heating took no less than one cubic meter of gas for every cubic meter of water.

"With the new Water IQ installation, we comply with new legislation on the use of certain crop protection products. What's more, an inverted nanofilter has been installed in the system. This prevents the accumulation of Na+ and K+, and we could lower the EC in order to reuse the water. This means we don't have to discharge water anymore if its EC or Na+ levels are too high.

"At our main location in Made, the installation has been in use for several months now. At the second location in Made, which is currently being equipped for the propagation of vegetable plants, the second Opticlear Diamond will be installed soon. Our location in 's-Gravenzande will follow early next year. All in all, we are trying to be as environmentally-friendly as possible in the production of vegetable plants and ornamentals."

For more information:
Westlandse Planten Kwekerij
Schanseind 19
4921 PM Made

Water IQ
Collse Heide 12
5674 VN Nuenen
+31(0)40 30 30 800
Publication date: