EFFECT OF SEWAGE SLUDGE ADDITION ON POROSITY OF LIGHTWEIGHT EXPANDED CLAY AGGREGATE (LECA) AND LEVEL OF HEAVY METALS LEACHING FROM CERAMIC MATRIX

摘要

The results of using municipal sewage sludge as a component of porous ceramic sinters are described. Due to high porosity the ceramic sinters can be widely applied and we have focussed on ecological aspect of this application.rnThe results of the gaseous pollutant emission measurements carried out during industrial test are presented. Metal leaching from the end product was also tested. It was found that metals were fixed within the sinter structure. The ash matter from sludge was embodied into the solid phase.