scholarly journals Kinetic Modeling of Fluidized-Bed Biofilm Reactor for Lake Water Treatment.

1999 ◽  
Vol 22 (5) ◽  
pp. 389-395 ◽  
Author(s):  
Noriyo NISHIJIMA ◽  
Tetsuya TANAKA ◽  
Kouichi TSUZUKI ◽  
Takeo TAKAGI
Keyword(s):  
Water Treatment ◽  
Fluidized Bed ◽  
Kinetic Modeling ◽  
Lake Water ◽  
Biofilm Reactor

scholarly journals Characterization of Algae Removal in a Fluidized Bed Biofilm Reactor System for Lake Water Treatment.

1998 ◽  
Vol 21 (4) ◽  
pp. 217-223 ◽  
Author(s):  
Tetsuya TANAKA ◽  
Koichi TSUZUKI ◽  
Noriyo NISHIJIMA ◽  
Takeo TAKAGI ◽  
Katsuji TERAZONO
Keyword(s):  
Water Treatment ◽  
Fluidized Bed ◽  
Lake Water ◽  
Biofilm Reactor ◽  
Reactor System ◽  
Algae Removal

Algae-removal performance of a fluidized-bed biofilm reactor system for lake water treatment

2001 ◽  
Vol 43 (1) ◽  
pp. 277-283 ◽  
Author(s):  
T. Tanaka ◽  
K. Tsuzuki ◽  
N. Nishijima ◽  
T. Takagi
Keyword(s):  
Dissolved Oxygen ◽  
Fluidized Bed ◽  
Chlorophyll A ◽  
Lake Water ◽  
Energy System ◽  
Biofilm Reactor ◽  
Reactor System ◽  
Water Bloom ◽  
Chlorophyll A Concentration ◽  
Algae Removal

The algae removal efficiency of a pilot plant – based on a fluidized-bed biofilm reactor system for treating – was investigated. This system does not require back-washing because the fluidized-bed suffers no clogging. Moreover, the system uses dissolved oxygen in the influent water for aerobic biological treatment without the need for additional aeration equipment. This, it is an easy-maintenance, low-energy system for purifying eutrophic lake water. The system was operated continuously at a flow rate of 1500 m3/d for nine months at Tsuchiura Port in Lake Kasumigaura. And concentrations of chlorophyll-a and dissolved oxygen in both the influent and effluent water were continuously monitored. In summer (August to September) when water bloom occurred, the average efficiency of chlorophyll-a removal was 64% at an average influent chlorophyll-a concentration of 137.8 μg/L. Over the entire experimental period of nine months, the average daily amount of removed chlorophyll-a was 40.3 g/d at an average influent chlorophyll-a concentration of 89.5 μg/L. By analyzing the relationship between the amount of removed chlorophyll-a and the consumption of dissolved oxygen, it was estimated that almost all of the algae trapped in the reactor was biologically degraded.

Improvement of Lake Water Quality by using Moving Rapid Water Treatment System

2018 ◽  
Vol 18 (1) ◽  
pp. 107-115 ◽  
Author(s):  
Kwang-Hee Lee ◽  
◽  
Min-Ho Kim ◽  
Nam-Woo An ◽  
Chul-hwi Park
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Lake Water ◽  
Treatment System ◽  
Lake Water Quality ◽  
Water Treatment System

Characteristics of an air-fluidized-bed biofilm reactor system with a multi-media filter

1994 ◽  
Vol 30 (11) ◽  
pp. 101-110
Author(s):  
Toshiaki Tsubone ◽  
Seiichi Kanamori ◽  
Tatsuo Takechi ◽  
Masahiro Takahashi
Keyword(s):  
Particle Size ◽  
Fluidized Bed ◽  
Suspended Solids ◽  
Pilot Scale ◽  
Biofilm Reactor ◽  
Reactor System ◽  
Multi Media ◽  
Bod Removal

A pilot scale study was conducted using an Air-Fluidized-Bed Biofilm Reactor (AFBBR) system with a Multi Media Filter (MMF). Soluble BOD (S-BOD) concentration in the effluent of the AFBBR had a correlation with total BOD (T-BOD) and Suspended Solids (SS) concentration in the effluent of the MMF. The lower the S-BOD in the effluent of the AFBBR was, the lower was not only T-BOD but also SS in the effluent of the MMF. It was found that as treatment proceeded, S-BOD was removed and the particle size of SS increased in the AFBBR. These results suggested that the mechanism of BOD removal in this system was: S-BOD was removed and a part of the S-BOD was changed to SS and the particle size of the SS increased in the AFBBR, and then the SS was removed by the MMF. Thus not only the T-BOD but also the SS in the effluent of MMF was lower when the S-BOD in the effluent of the AFBBR was lower. When the S-BOD in the effluent of the AFBBR was 8mg/L, T-BOD and the SS in the effluent of the MMF were 10mg/L and 4mg/L, respectively. In order to have an average S-BOD value in the effluent of the AFBBR of about 8mg/L, the T-BOD loading and the S-BOD loading needed to be less than 1.3kg/m3/day and 0.45 kg/m3/day, respectively. Even when the BOD loading was high, nitrification still occurred in this system.

Study of Biofilm and Fluidization of Bioparticles in a Three-Phase Liquid-Fluidized-Bed Reactor

1991 ◽  
Vol 23 (7-9) ◽  
pp. 1347-1354 ◽  
Author(s):  
F. Trinet ◽  
R. Heim ◽  
D. Amar ◽  
H. T. Chang ◽  
B. E. Rittmann
Keyword(s):  
Fluidized Bed ◽  
Liquid Velocity ◽  
Substrate Surface ◽  
Biofilm Reactor ◽  
Strongly Correlated ◽  
Polysaccharide Content ◽  
High Particle ◽  
Air Turbulence ◽  
Three Phase ◽  
Phase Liquid

A three-phase, liquid-fluidized-bed biofilm reactor was operated over wide ranges of liquid velocity, air velocity, medium concentration, and substrate surface loading. The biofilm characteristics (total colonization, polysaccharide content, density, and thickness) and the specific detachment coefficient (bs) were determined by a combination of experimental measurements and a hydrodynamic model. The results demonstrated that dense and thin biofilms were induced by the physical condition of high particle-to-particle contacts and high liquid turbulence. The biofilm's polysaccharide content was increased by increased air turbulence and a low substrate availability. The specific detachment coefficient, bs, was strongly correlated to the concentration of the medium (negatively) and the polysaccharide content (positively). Overall, the bs can be controlled significantly by the gas and liquid velocities; increasing either velocity tends to increase bs.

Kinetic modeling of biomass gasification in a micro fluidized bed

2017 ◽  
Vol 39 (7) ◽  
pp. 643-648 ◽  
Author(s):  
Wei Gao ◽  
Mohammad Reza Farahani ◽  
Mehdi Rezaei ◽  
Abdul Qudair Baig ◽  
Muhammad Kamran Jamil ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Kinetic Modeling ◽  
Biomass Gasification
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