Polish-made pyrolytic convective waste utilizer of WPS type. Structure, principle of operation and evaluation. Problems of residue management after thermal waste utilization

This paper is concerned with solid waste utilization in the specially made for this purpose Pyrolytic Convective Waste Utilizer (PCWU) ofWPS Type, a technology which may be in essential way helpful in getting rid of very noxious wastes. A family of the PCWU WPS utilizers ispresented dependent on the amount of wastes and operation capacitiesrequired. The discussed PCWU WPS Type utilizer was tested in severalareas of Poland by different users, taking into account different sorts of difficult-to-utilize and noxious wastes. The paper, presents structural composition, principal of operation of the PCWU WPS utilizer and then aims at analyzing flue gases and eluates coming from the pyrolytic rendering waste harmless. The primary studies were carried out to determine the most important indicators of pollution in the eluate flowing out of the waste layer after pyrolytic decomposition on the samples taken from the WPS Type Utilizer operating near Gdansk andat Tczew. The comparative study of secondary wastes obtained after thermal decomposition without oxygen access is presented. The detailedstudy results of utilization and neutralization of secondary wastes coming from the WPS Type Utilizer are also included. The studies covered three groups of secondary wastes after pyrolysis process and theywere: (i) acrylic paint wastes, (ii) phtalic paint wastes, and (iii)plastics wastes. The studies were carried out in three stages: 1- covering the studies of eluate outflowing from the layer of secondary wastes; 2- covering the studies of compression strength of cobble-stones manufactured, and 3- covering the studies of water extracts from cobble-stones. In the paper, the authors present comparative direct cost analysis of thermal waste liquidation using classical method in comparison with pyrolytic method. The paper delivers also the authors' own evaluation of the Pyrolytic Convective Waste Utilizer of WPS Typewith indication of the possibility for its broader application. [ABSTRACT FROM AUTHOR]