SiO2对污泥陶粒性能的影响研究

From the point of view of the sludge utilizations, the article studies feasibility of the ceramisite making from drinking-water sludge and sewage sludge. SiO2 is the highest content of inorganic components in raw sludge, so the effect of SiO2 content on the characteristics of ceramisite were discussed, and its effect on the thermodynamic properties of raw sludge, physical characteristics, SEM and compressive strength of ceramisite were investigated. Results shown that the optimum range of SiO2 is 22.5%-45%, the thermodynamic properties of raw material with three different SiO2 almost no changing apart from organics volatile and carbon combustion stage. Higher strength ceramsite and more densified surfaces could be obtained as SiO2 contents increase.