DOMOTECHNIKI S.A. emphasizes on the development and execution of high-tech projects of industrial waste handling and treatment, aiming at the advancing of modern applications for environmental project management. In the dairy plant of OLYMPOS, besides the main production building and the electromechanical center, a biological treatment unit was constructed for the liquid waste of the plant. It is a two-stage biological treatment with two DAF, band filter with a capacity of 1300kg BOD5/day and equivalent to a population of 20000 inhabitants.