Galvanization ZGR Kovačić has a completely resolved system of technological wastewater treatment, which begins with the selection of chemicals used in metalworking processes.
In our processes, we use only environmentally friendly and acceptable chemicals from renowned manufacturers that contain no cyanides or hexavalent chromium. We are Cr VI – free electroplating job shop.
The wastewater treatment process is fully automated. It consists of neutralization of acid – alkaline rinsing waters, and precipitation of metal hydroxides in the form of sludge, which is filtered through filter press, where a cake containing 70-75% of water is obtained. The treated water, which fully meets the parameters set by the law, goes to the public waste water collecting system. Regular analyzes of water by an authorized institution meet the requirements set by the law.
In order to reduce the volume and mass of sludge, we were the first in the Republic of Croatia to start drying galvanic sludge in 2004. A low-temperature WATROMAT® dryer from Swiss manufacturer WATROPUR AG was purchased for this purpose.
Ventilation air undergoes a scrubber wash process and leaves the process completely clean.
ZGR Kovačić has a certified environmental management system ISO 14001: 2015.