Water quality limits

When recirculated, poison water has a complex composition. We want more insight into the effect of the substances present in combination with the various microbial processes in various compartments of the water system. In addition, we want to have an idea of ​​the biological water quality more quickly (than the few days in the laboratory). In this project, a water quality model is being developed, with which measured data from water quality sensors, climate sensors, plant health sensors and additional discontinuous data sources such as laboratory analyzes can be reliably interpreted in practice. This results in control options aimed at healthy and safe cultivation. The project provides more knowledge about the use and interpretation of data from sensors for autonomous cultivation and the possibilities of artificial intelligence for the management and control of the water system and crops in greenhouse horticulture.

Project description:

The quality of gift water is crucial for reliable cultivation. Where water quality was previously seen as the presence or absence of nutrients, it now shifts with complete recirculation to a complex composition of nutrients, crop protection agents, inhibitors, disinfectants, organic substances, and various microbiological parameters, including the presence of pathogens. and teasing. In addition, the water system on the cultivation company consists of various water flows in pipes to and from the cultivation, with water disinfection and temporary storage in between. The effect on the cultivation of the substances present in combination with the various microbial processes in various compartments of the water system is largely unknown.

In a previous project (PPS Water Quality quickly visualized), a first mobile setup was created for real-time monitoring of water values. This has provided insight into the added value (synergy) of simultaneously measuring different parameters, such as the combination of acidity and redox potential as a measure of the risk of Fusarium.Within this project we want to gain more and faster insight into water quality and associated water parameters with control options aimed at healthy and safe cultivation, comparable to the existing climate computer for climate and lighting.

Project design/phases/approach.
The following work packages are being worked on within the project:

Inventory of substances/parameters and microbial parameters at practical companies. Selection of the most important substances and determining the limit values ​​of these substances (in connection with the BCO). The limit values ​​are investigated through multi-year practical tests and experimental research in test greenhouses. Sensors for water parameters and climate are connected to sensors for plant growth and production. Effects of common water treatments such as oxygen injection but also storage in basins will be investigated.
Selection of new sensors (spectral, germ count) and development of these sensors. Testing these sensors at practical companies.
Model based on limit values ​​and sensory measurements. Application, analysis of data in practice and at the Tomatoworld test location.
Development of measuring system and dashboard. Development of the Model and setup of the database.
Demonstration of the model and dashboard at a practical company and Tomatoworld.

Project number W21004
Start date 01-01-22
End date 12/31/24
Completed No
Executor SCFF, KWR and Tomatoworld

Glastuinbouw Waterproof