At the Frövi Greenery, Royal Brinkman created a fully integrated water system for the 10-hectare greenhouse. The water for this greenhouse comes from a lake several kilometers away and is stored in a water basin before being pumped into the system.

Using water from the lake provides a sustainable and reliable source, ensuring a consistent water supply for the greenhouse. The fully integrated water system delivers high-quality water to Frövi's tomato plants, processed efficiently and sustainably.

The system includes pumps that handle 100 cubic meters of water per hour from the basin and a neutralizer of 60 cubic meters per hour for precise pH control. We installed two units, each 10 meters long, which were designed, assembled, and tested in The Netherlands before being transported to Sweden.

These high-capacity units are engineered to deliver consistent water quality, essential for ensuring healthy tomato plants and maximizing productivity across the entire 10-hectare greenhouse.

Part of the water management system is a large reverse osmosis installation that transforms lake water into high-quality irrigation water.

The installation includes a pre-filtration system that removes larger particles from the water and protects the reverse osmosis membrane. The reverse osmosis process then purifies the water by removing dissolved salts and contaminants, ensuring it is clean and suitable for the plants.

The reverse osmosis installation guarantees a consistent supply of pure and safe water for the tomato plants.

Next to the water units, we've installed a solid fertilizer system and mixing tanks that provide the tomato plants with essential nutrients.

The irrigation system consists of two dripper systems, including nearly 62 kilometers of drip hoses with almost 100,000 pressure-compensated drippers. The system features an automatic flushing mechanism that ensures the plants always receive fresh water and nutrients, supporting optimal growth. This system enables Frövi to achieve the highest possible yield.

The water management system at Frövi is designed with sustainability as foundation. The system collects drainage water from the greenhouse, which is pumped into an untreated drain tank. Then, it is fully disinfected with a UV system before being stored in a treated drain tank for reuse in the irrigation units.

By recycling water, the system minimizes waste water and ensures an efficient and sustainable approach. This closed water system is a key element in Frövi's sustainable cultivation process.

Joshua Reijnen explains what makes this project special: "I am proud of this project because it includes two impressive irrigation units, each capable of handling 125 cubic meters per hour to feed the greenhouse. We’ve created a complete and closed water management system, with features like automatic flushing, reverse osmosis, and the reuse of rainwater and drain water."

This project is a great example of how effective water management can contribute to a more sustainable greenhouse. By using advanced filtration and recycling water, Frövi ensures a constant supply of clean water for the tomato plants. It represents a significant step forward for sustainable and locally focussed horticulture in Sweden.

Electrical engineering 
We designed and installed an efficient electrical layout with 18 control panels, managing heating, ventilation and lighting systems. The heating system uses excess heat from the nearby paper factory.

Climate control
We installed Hoogendoorn's advanced IIVO system, controlling everything from temperature to humidity. The system can be managed remotely for optimal growing conditions.

Collaboration with KUBO
In close collaboration with KUBO, we tackled the challenges of this project with a shared focus on quality. Together, we deliverd an innovative, sustainable and future-proof greenhouse.