Open AccessResearch into Filtration Washing Kinetics of Sludge Pulp Bottom Settlings
Author(s) -
V I Salamatov,
S. A. Fetisova
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/666/3/032100
Subject(s) - filtration (mathematics) , settling , pulp and paper industry , decantation , kinetics , chemistry , chromatography , environmental science , environmental engineering , engineering , mathematics , statistics , physics , quantum mechanics
The research presents the results of the study of filtration washing kinetics of sludge pulps containing various substances. The kinetics of the process of washing the valuable solution from mother waters when applying the scrubber solution (water) with the fully engaged surface of the bottom settlings is analysed. Key stages of the washing process are interpreted in the research, as well as the impact of the basic parameters of washing (expendable modulus, washing circulation cycle time, bottom settlings thickness, scrubber solution temperature in the mother waters, etc.) on the performance of washing the valuable solute from interstices of bottom settlings is identified. It is shown that the filtration washing process is influenced by the conditions of appearing the bottom settlings on the filtering element. The research gives an insight into the process of washing the bottom settlings from the flaking and preliminarily concentrated pulps. Analytical expressions for the effectiveness of filtration washing of different stages, which are based on bottom settling specific loads dependent on the dissolved substance and expendable modulus, are provided.