On the island of Koločep near Dubrovnik, modernization of wastewater treatment plant was performed, as well as reconstruction of existing tanks and installation of new wastewater pre-treatment, installation of new pumps, propellers, mixers, dispensers, measuring equipment, float switches, new cables and cable ducts, and associated automation and accessories. 

As part of the reconstruction of the plant, the following was performed: 

• Creation of electrical diagrams
• Production and installation of automation cabinets
• Development of PLC programs and SCADA systems for automation of wastewater treatment processes
• An HSPA router has been installed to remotely monitor and control the device
• Cables and cable ducts have been installed
• Grounding is installed
• Measuring devices were installed and parameterized (liquid levels, pipeline pressure, oxygen level and temperature in the tanks, liquid turbidity)
• Installations were tested, the functionality of all devices was checked and the system was put into operation