KMID : 1024520020110060553
|
|
Journal of the Environmental Sciences 2002 Volume.11 No. 6 p.553 ~ p.560
|
|
Characteristics and Phenol Wastewater Treatment of Aerobic Biofilm Reactor Used Rhodococcus sp. EL-GT and Sludge
|
|
Park Geun-Tae
Won Seong-Nae Cho Sun-Ja Son Hong-Joo Lee Geon Lee Sang-Joon
|
|
Abstract
|
|
|
The research was performed to compare to the biofilm characteristics and phenol removal efficiency in RBCs(Rotating Biological Contactor) using Rhodococcus sp. EL-GT(single population) and activated sludge(mixed population) as inoculum. Both reactors showed similar tendency on variations of dry weight, thickness and dry density of biofilm. However, the growth of biofilm thickness in 3 and 4 stage of single population reactor has sustained longer than that of the mixed population reactor. Unlike the mixed population reactor, the dry density of biofilm in the single population reactor had a difference between 1, 2 stage and 3, 4 stage. The single population reactor was stably operated without the decrease of phenol removal efficiency in the range of pH 6 ~ 9 and 15mM phenol was completely degraded in these pH ranges. But in case of the mixed population reactor, the phenol degradability was dramatically decreased at over 5mM phenol concentration because of the overgrowth and detachment of its biofilm.
|
|
KEYWORD
|
|
Rhodococcus, sludge, RBC, biofilm reactor
|
|
FullTexts / Linksout information
|
|
|
|
Listed journal information
|
|
|