Anaerobic treatment of vinasses by a sequentially mixed moving bed biofilm reactor

2007 ◽  
Vol 56 (2) ◽  
pp. 1-7 ◽  
Author(s):  
C. Sheli ◽  
R. Moletta
Keyword(s):  
Mixing Time ◽  
Anaerobic Treatment ◽  
Biofilm Reactor ◽  
Organic Loading Rate ◽  
Total Biomass ◽  
Moving Bed Biofilm Reactor ◽  
Specific Density ◽  
Moving Bed ◽  
Biofilm Carrier ◽  
Distillery Wastewater

Wine distillery wastewater, commonly called vinasses, was treated by an anaerobic moving bed biofilm reactor (AMBBR) with 32.9 litre available volume. The reactor was filled with 66% cylindrical polyethylene supports with density 0.84 g cm−3 as a biofilm carrier. The reactor was sequentially mixed by a submerged centrifugal pump fixed to the bottom, and each mixing time just lasted 1.25 minutes. The organic loading rate (OLR) of the reactor were increased from 1.6 to 29.6 g sCOD l−1 d−1 (soluble chemical oxygen demands −sCOD) and hydraulic retention time (HRT) was decreased from 6.33 to 1.55 days accordingly. Soluble COD removal efficiency was 81.3–89.2% at an OLR of 29.6 g sCOD l−1d−1. At the end of the experiment, 83.4% total biomass was attached on support and the specific density of support in the reactor was 0.93–1.05 g cm−3, which increased by about 10.7–25% compared with that at the beginning of the study.

Biological Phosphorus Removal in a Sequencing Batch Moving Bed Biofilm Reactor

1999 ◽  
Vol 40 (4-5) ◽  
pp. 161-168 ◽  
Author(s):  
H. Helness ◽  
H. Ødegaard
Keyword(s):  
Phosphorus Removal ◽  
Batch Reactor ◽  
Complete Removal ◽  
Biofilm Reactor ◽  
Biological Phosphorus Removal ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed ◽  
Biofilm Carrier ◽  
Biofilm Process ◽  
Biological Phosphorus

Experiments have been carried out with biological phosphorus removal in a sequencing batch moving bed biofilm reactor (SBMBBR) with a plastic biofilm carrier (Kaldnes) suspended in the wastewater. The aim of the research leading to this paper was to evaluate biological phosphorus removal in this type of biofilm process. Biological phosphorus removal can be achieved in a moving bed biofilm reactor operated as a sequencing batch reactor. In order to achieve good and stable phosphorus removal over time, the length of the anaerobic period should be tuned to achieve near complete removal of easily biodegradable COD in the anaerobic period. The total COD-loading rate must at the same time be kept high enough to achieve a net growth of biomass in the reactor. Use of multivariate models based on UV-absorption spectra and measurements of the redox potential show potential for control of such a process.

Effect of salinity variation on the autotrophic kinetics of the start-up of a membrane bioreactor and hybrid moving bed biofilm reactor-membrane bioreactor at low hydraulic retention time

2017 ◽  
Vol 77 (3) ◽  
pp. 714-720 ◽  
Author(s):  
J. C. Leyva-Díaz ◽  
A. Rodríguez-Sánchez ◽  
J. González-López ◽  
J. M. Poyatos
Keyword(s):  
Retention Time ◽  
Membrane Bioreactor ◽  
Municipal Wastewater ◽  
Hydraulic Retention Time ◽  
Biofilm Reactor ◽  
Total Biomass ◽  
Municipal Wastewater Treatment ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed ◽  
Start Up

Abstract A membrane bioreactor (MBR) and a hybrid moving bed biofilm reactor-membrane bioreactor (hybrid MBBR-MBR) for municipal wastewater treatment were studied to determine the effect of salinity on nitrogen removal and autotrophic kinetics. The biological systems were analyzed during the start-up phase with a hydraulic retention time (HRT) of 6 h, total biomass concentration of 2,500 mg L−1 in the steady state, and electric conductivities of 1.05 mS cm−1 for MBR and hybrid MBBR-MBR working under regular salinity and conductivity variations of 1.2–6.5 mS cm−1 for MBR and hybrid MBBR-MBR operating at variable salinity. The variable salinity affected the autotrophic biomass, which caused a reduction of the nitrogen degradation rate, an increase of time to remove ammonium from municipal wastewater and longer duration of the start-up phase for the MBR and hybrid MBBR-MBR.

scholarly journals Intermittent Aeration in a Hybrid Moving Bed Biofilm Reactor for Carbon and Nutrient Biological Removal

Water ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 492 ◽  
Author(s):  
Gaetano Di Bella ◽  
Giorgio Mannina
Keyword(s):  
Loading Rate ◽  
Nitrogen Loading ◽  
Biofilm Reactor ◽  
Operating Conditions ◽  
Organic Loading Rate ◽  
Intermittent Aeration ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed ◽  
Operational Conditions ◽  
N Removal

The paper presents an experimental study on a lab scale hybrid moving bed biofilm reactor with intermittent aeration. Specifically, a comparison between two different operating conditions was analyzed: continuous and intermittent aeration. Both continuous and intermittent aeration were monitored and compared in order to get the best operational conditions. The intermittent aeration campaign was sub-divided in three phases with different duration of alternation of aerobic and anoxic times and organic and nitrogen loading rates. The efficiency of N-removal improved by 70% during the intermittent aeration. The best condition was observed with 40 min of aeration and 20 min of no-aeration, an organic loading rate of 2.2 kgCODm−3day−1 and a nitrogen loading rate of 0.25 kgNm−3day−1: under these operational conditions the removal efficiencies for carbon and nitrogen were 93% and 90%, respectively. The derived results provide the basis for WWTP upgrade in order to meet stricter effluent limits at low energy requirements.

Modeling of the attached and suspended biomass fractions in a moving bed biofilm reactor

Chemosphere ◽  
2021 ◽  
Vol 275 ◽  
pp. 129937
Author(s):  
Alessandro di Biase ◽  
Maciej S. Kowalski ◽  
Tanner R. Devlin ◽  
Jan A. Oleszkiewicz
Keyword(s):  
Biofilm Reactor ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed ◽  
Suspended Biomass

scholarly journals Moving bed biofilm reactor (MBBR) for dairy wastewater treatment

2020 ◽  
Vol 6 ◽  
pp. 340-344
Author(s):  
Andreia D. Santos ◽  
Rui C. Martins ◽  
Rosa M. Quinta-Ferreira ◽  
Luis M. Castro
Keyword(s):  
Wastewater Treatment ◽  
Biofilm Reactor ◽  
Dairy Wastewater ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed
Sign in / Sign up

Export Citation Format

Share Document