PREMISE
With the increasing sludge production and cement carbon emissions worldwide, there is an urgent need to develop synergistic approaches to sludge co-process in cement kilns options for building up an interactive sludge carbon reduction process. Cement kilns with temperatures as high as 1450 °C can dissipate various wastes and completely decompose or solidify harmful substances, including dioxins and heavy metals, in the cement crystal structure. Therefore, cooperative cement kiln disposal of sludge can thoroughly decompose organic components as well as their intrinsically cured heavy metals.
Sewage sludge is a frequent industrial and municipal byproduct that has become a pressing social issue with increasing urbanization and industrialization, while the cement industry is responsible for approximately 7% of global greenhouse gas emissions each year (Zaker et al., 2019). In order to reduce the carbon footprint on the environment caused by the cement industry, there is an urgent need to find alternative materials to make the concrete industry sustainable. In addition, the pre-treatment sludge can be burned in synergy with conventional cement by using the cement kiln as the final disposal carrier to produce recyclable construction materials or subgrade materials . This not merely solves the problem of sludge disposal but also conserves cement raw materials and creates a closed-green loop that reduces carbon emissions from both the cement industry and the end of the industrial waste chain.
After years of research, the cement kiln co-processing of solid waste is very friendly to the environment. It not only solidifies heavy metals but also anaerobically removes furans and dioxins while reducing overall carbon emissions from several cross-cutting industries.
DESIGN
RECEIVING, PROCESSING, STORING, DOSING & TRASPORTING DRIED SLUDGE PLANT
BSP was therefore entrusted with the desing & erection of a reception, storage, dosage and transfer plant for dry sludge in the most important cement factory in Croatia.
The system consists of:
– Compartmented truck receiving hopper
– Handling system composed of extractor screw and bucket elevator
– 350mc storage silo equipped with planetary extraction system
– Unloading system composed of silo buffer and 2 dense phase transport lines, one with a capacity of 7ton/h the other direct to the furnace of 50ton/h
The entire system is designed according to Atex regulations
REALIZATION
WORK IN PROGRESS
CONCLUSION
Thanks to its long experience in the cement sector and especially in the alternative fuel sector, BSP confirms itself as a European leader in the supply of sludge treatment plants