Wastewater treatment in a pilot scale inverse fluidized-bed biofilm reactor

1995 ◽  
Vol 9 (1) ◽  
pp. 35-40 ◽  
Author(s):  
Yoon Chan Choi ◽  
Dong Seog Kim ◽  
Tae Joo Park ◽  
Kyung Kee Park ◽  
Seung Koo Song
Keyword(s):  
Wastewater Treatment ◽  
Fluidized Bed ◽  
Pilot Scale ◽  
Biofilm Reactor ◽  
Inverse Fluidized Bed

Treatability studies of textile wastewater on an aerobic fluidized bed biofilm reactor (FABR): a case study

2009 ◽  
Vol 59 (9) ◽  
pp. 1817-1821 ◽  
Author(s):  
Thalla Arun Kumar ◽  
S. Saravanan
Keyword(s):  
Wastewater Treatment ◽  
Fluidized Bed ◽  
Removal Efficiency ◽  
Textile Wastewater ◽  
Pilot Scale ◽  
Biofilm Reactor ◽  
Combined Process ◽  
Biofilm Process ◽  
Textile Wastewater Treatment

The performance of a pilot scale aerobic fluidized bed biofilm process and chemical coagulation for textile wastewater treatment was studied. In order to enhance biological treatment efficiency of textile wastewater, poly urethane cubes were incorporated as a supporting media for attached growth. Fenton's reagent was used as a coagulant in the present study. The fluidized bed biofilm process was operated at four HRTs (3, 4.5, 6 and 8 hour) and the results showed that the COD removal efficiency increased from 69% to 94% when the HRT increased from 3 to 4.5 and there of the removal efficiency remained constant around 94%, even though using relatively low MLSS concentration and short sludge retention time. COD and TDS removals of 94.2% and 93.3% were achieved by overall combined process (FABR + Coagulation aided Sedimentation). After the treatment there is remarkable decrease in colour in addition to COD and TDS. This combined process was highly competitive in comparison to the other similar combined systems. It was concluded that this combined process was successfully employed and much effectively decreased they COD, TDS and color of textile wastewater treatment at pilot scale.

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.

Application of a combined process of moving-bed biofilm reactor (MBBR) and chemical coagulation for dyeing wastewater treatment

2006 ◽  
Vol 54 (9) ◽  
pp. 181-189 ◽  
Author(s):  
D.H. Shin ◽  
W.S. Shin ◽  
Y.-H. Kim ◽  
Myung Ho Han ◽  
S.J. Choi
Keyword(s):  
Wastewater Treatment ◽  
Textile Wastewater ◽  
Pilot Scale ◽  
Biofilm Reactor ◽  
Dyeing Wastewater ◽  
Moving Bed Biofilm Reactor ◽  
Combined Process ◽  
Chemical Coagulation ◽  
Moving Bed ◽  
Textile Wastewater Treatment

A combined process consisted of a Moving-Bed Biofilm Reactor (MBBR) and chemical coagulation was investigated for textile wastewater treatment. The pilot scale MBBR system is composed of three MBBRs (anaerobic, aerobic-1 and aerobic-2 in series), each reactor was filled with 20% (v/v) of polyurethane-activated carbon (PU-AC) carrier for biological treatment followed by chemical coagulation with FeCl2.In the MBBR process, 85% of COD and 70% of color (influent COD=807.5 mg/L and color=3,400 PtCo unit) were removed using relatively low MLSS concentration and short hydraulic retention time (HRT=44 hr). The biologically treated dyeing wastewater was subjected to chemical coagulation. After coagulation with FeCl2, 95% of COD and 97% of color were removed overall. The combined process of MBBR and chemical coagulation has promising potential for dyeing wastewater treatment.

A novel fast mass transfer anaerobic inner loop fluidized bed biofilm reactor for PTA wastewater treatment

2016 ◽  
Vol 74 (5) ◽  
pp. 1088-1095 ◽  
Author(s):  
Yingwen Chen ◽  
Jinlong Zhao ◽  
Kai Li ◽  
Shitao Xie
Keyword(s):  
Mass Transfer ◽  
Wastewater Treatment ◽  
Fluidized Bed ◽  
Terephthalic Acid ◽  
Oxygen Demand ◽  
Biofilm Reactor ◽  
Stable Chemical ◽  
Start Up ◽  
Operation Stability ◽  
Purified Terephthalic Acid

In this paper, a fast mass transfer anaerobic inner loop fluidized bed biofilm reactor (ILFBBR) was developed to improve purified terephthalic acid (PTA) wastewater treatment. The emphasis of this study was on the start-up mode of the anaerobic ILFBBR, the hydraulic loadings and the operation stability. The biological morphology of the anaerobic biofilm in the reactors was also analyzed. The anaerobic column could operate successfully for 46 days due to the pre-aerating process. The anaerobic column had the capacity to resist shock loadings and maintained a high stable chemical oxygen demand (COD) and terephthalic acid removal rates at a hydraulic retention time of 5–10 h, even under conditions of organic volumetric loadings as high as 28.8 kg COD·m−3.d−1. The scanning electron microscope analysis of the anaerobic carrier demonstrated that clusters of prokaryotes grew inside of pores and that the filaments generated by pre-aeration contributed to the anaerobic biofilm formation and stability.

scholarly journals Investigation of flow dynamic characteristics of inverse fluidized bed biofilm reactor for degrading pharmaceutical based biomedical wastewater

2020 ◽  
Author(s):  
Sabarunisha Begum S ◽  
Mohamed Yacin Sikkandar ◽  
Prakash NB ◽  
Mohsen Bakouri ◽  
Ahmed Bakhit Alanazi ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Dynamic Characteristics ◽  
Biofilm Reactor ◽  
Flow Dynamic ◽  
Inverse Fluidized Bed
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