A nice example is the project on zero-emission growing, in which growers are capable of keeping constant high quality recirculation water, so that discharge (and connected costs for obligatory purification of this discharge water) can be avoided. This zero emission cultivation strategy makes use of commercially available technology and applies it in a smart way. Next to that, it is also my responsibility to develop purification equipment for the removal of plant protection products together with the technology suppliers. In that process together we think about the smartest way to implement these technologies, for example by combining purification of discharge water with disinfection of recirculation water. Another example is development of a mobile installation, that can be rented by growers from contractors to purify their discharge water.