Open AccessOPERATIONAL PERFORMANCE OF VERTICAL UPFLOW ROUGHING FILTER FOR PRE-TREATMENT OF LEACHATE USING LIMESTONE FILTER MEDIA
Author(s) -
Augustine Chioma Affam
Publication year - 2013
Publication title -
journal of urban and environmental engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.187
H-Index - 13
ISSN - 1982-3932
DOI - 10.4090/juee.2013.v7n1.117125
Subject(s) - turbidity , leachate , filtration (mathematics) , filter (signal processing) , environmental science , environmental engineering , volumetric flow rate , sedimentation , pulp and paper industry , materials science , chemistry , geology , environmental chemistry , mathematics , engineering , sediment , statistics , oceanography , physics , quantum mechanics , electrical engineering , paleontology
This study was conducted to investigate the removal of COD, BOD, turbidity and colour from leachate using vertical upflow filtration technique. Limestone media with a density of 2554 kg/m³ was crushed and graded in sizes of 48 mm, 812 mm and 12-18 mm. Trial runs were done before the main experiment at an interval of 24 h analysis. Leachate was between pH 7.94 to 8.12 before experiments but increased to pH 8.42 after the filtration process. Maximum headloss at steady flow rate 20mL/min was 0.5 cm. The optimum treatment was achieved with 4–8 mm, 8–12 mm & 12–18 mm media size in combination and removal efficiency was 22 to 81%, 22 to 75%, 32 to 86%, and 36 to 62% for BOD, COD, turbidity and colour, respectively. Vertical upflow roughing filter can be used for pre-treatment of leachate before further treatment