Automated Spraying System for Post-Mining Land Reclamation – Structural Design and Functional Testing

Abstract

This article presents the concept and test results of a prototype automated spraying system developed as part of the REECOL project, designed for applying remediation mixtures such as water, seeded mulch, and organic biofertilizers. The system is integrated with transport platforms and consists of modular components, including a pump unit, suction manifold, mixers, IBC tanks, a power supply unit, and a compressor. The key operating element is a spray cannon equipped with two independent nozzles, enabling the application of media with varying densities and the adjustment of spray characteristics. Functional tests confirmed the correct operation of the spray cannon’s rotation and deflection systems and allowed determination of control characteristics as a function of motor supply frequency and linear actuator extension. Measurements of flow, pressure, and spray range were performed for various nozzle configurations. Additional tests verified mixer performance and assessed suction and spraying capabilities for mulch and biofertilizers. The system demonstrated proper operation with cellulose-based mixtures and indicated the need for ball valves when handling mixtures containing solid fractions. The developed prototype confirmed the ability to precisely and efficiently apply remediation media, providing a basis for further technology optimization and field testing.