Lean Management methods bring in a most efficient way the variety of answers to most common questions and problems which appear to public and private company owners. As the financial and legislative part are usually under controll, the operational part remains black box for most owners. Transparency, Efficiency enhancement, 'Internal Development Strategy', Organization development, 'Asessment of Potentials', Soft skills development and Cooperation empowerment are the most important fields solved by Lean Management approaches. Lean Management is based on the Toyota Production System (TPS), which was developed in 1950s. With the outstanding implementation success and results of TPS, Lean Management has been spreading through all continents and all industries and services. Nowadays it is not a question if a company has implemented lean management, but how effectively has it been implemented.solutions of sludge processing.