Zpravodaj Hnědé uhlí 2017, 57(3)

Optimization of hydrological functions of fly ash landfills using substrates based on the fly ash

Ing. Petra Huislová, Ing. Tomáš Khel, Ing. Renata Zárubová, Ph.D.

The production of electricity in thermal power plants also brings a problem with the application of combustion products in the landscape - fly ash. Physico-chemical properties of fly-ash reflect its origin, the combustion process itself and the composition of the feedstock. Utilization of fly ash in the countryside often faces the instability of this material with no biological recovery, without internal aggregates binding and often with extreme hydrological characteristics. The complex of these primary characteristics often does not allow healthy growth and development of the targeted vegetation. For this reason, it is advisable to mix ash with material that would eliminate the negatives of fly ash and would have been quantitatively and economically feasible. The article is focused on testing substrates consisting of fly ash from the combustion of biomass and sediment from the water flow as possible proper material stabilizing fly ash itself. The aim of the research was to define the chemical and physical properties of the individual components and determine their most advantageous ratio in order to create a substrate suitable for the intended use - the growing layer of tailings dams.

Keywords: fly ash, sediment, substrate

Published: September 1, 2017  Show citation