Open AccessInvestigations of re-hydration increase of dried sludge
Author(s) -
Piotr Wichowski,
Tomasz Rozbicki
Publication year - 2013
Publication title -
annals of warsaw university of life sciences-sggw. land reclamation
Language(s) - English
Resource type - Journals
eISSN - 2081-9617
pISSN - 1898-8857
DOI - 10.2478/sggw-2013-0019
Subject(s) - porosity , capillary action , humidity , bulk density , roof , environmental science , relative humidity , waste management , chemistry , materials science , pulp and paper industry , composite material , soil science , meteorology , engineering , soil water , physics , structural engineering
Investigations of re-hydration increase of dried sludge. The main aim of the research was to determine a susceptibility of a dried sludge to a re-hydration increase. The paper presents the results of investigations for a sludge which had been dried to ca. 86% of dry mass and stored in an airy place under roof during 2.5 years. As well, trials were carried out for a completely dried sludge (0% of water), stored outside under roof as well as inside in a laboratory room. To determine a maximum level of humidity increase, the results of re-hydration increase were presented for a sludge stored in conditions of capillary ascent. Additionally, a density, porosity and bulk density were determined for the investigated sludge