In May 2021 Felman successfully started up upgraded Waste Water Treatment. Plant is designed and installed according to manufacturer recommendations and complies with all requirements for treatment of waste water. Activated sludge type plant, consist of several chambers and recirculation, aeration systems, at the final stage, discharge treated with ultraviolet, fully automatic system with certified operator supervision.

New Cooling Tower installed in June 2021. Cooling tower replaced under capital investment project for improving removal excess heat from furnace elements and provide safe operation. Cooling tower capacity is induced draft, crossflow with vertical discharge, designed capacity 5 000 gal per min, consist of two standalone units with fan motors controlled by variable frequency drives, which allowed system to be run not only maximum effective on cooling circulation water, but with saving energy at the time, when full capacity of cooling is not necessary. Tower is designed and built to ISO 9001 certified standards and complies with energy efficiency requirements established by ASHRAE Standard 90.1-2016.