scholarly journals Application of Moving Bed Biofilm Reactor and Fixed Bed Hybrid Biological Reactor for Oilfield Produced Water Treatment: Influence of Total Dissolved Solids Concentration

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7297
Author(s):  
Nicolas Lusinier ◽  
Isabelle Seyssiecq ◽  
Cecilia Sambusiti ◽  
Matthieu Jacob ◽  
Nicolas Lesage ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Produced Water ◽  
Bacterial Species ◽  
Fixed Bed ◽  
Total Dissolved Solids ◽  
Biofilm Reactor ◽  
Moving Bed Biofilm Reactor ◽  
Dissolved Solids ◽  
Moving Bed ◽  
Oilfield Produced Water

This experimental paper deals with the development of a hybrid biological reactor for the treatment of a synthetic oilfield produced water under an increase in total dissolved solids (TDS) concentration. To comply with strengthening regulations concerning produced water discharge and peculiar produced water compositions, a moving bed biofilm reactor (MBBR) consisting in a combination of free activated sludge and moving biofilm supports was compared to a fixed bed hybrid biological reactor (FBHBR) consisting in a combination of free activated sludge and a fixed biofilm support. After a 216 days experimental period, the MBBR and the FBHBR were efficient to treat a synthetic produced water with chemical oxygen demand (COD) removal rate above 90% under an increase in TDS concentrations from 1.5 to 20 g·L−1. Ecotoxicity measurements on freshwater and marine microorganisms revealed an absence of toxicity on treated waters. A decrease in bacterial diversity indices with respect to the inoculum was observed in both bioreactors. This suggests that the increase in TDS concentrations caused the predominance of a low number of bacterial species.

Modeling Integrated Fixed-Film Activated Sludge and Moving-Bed Biofilm Reactor Systems II: Evaluation

2009 ◽  
Vol 81 (6) ◽  
pp. 576-586 ◽  
Author(s):  
Joshua P. Boltz ◽  
Bruce R. Johnson ◽  
Glen T. Daigger ◽  
Julian Sandino ◽  
Deborah Elenter
Keyword(s):  
Activated Sludge ◽  
Biofilm Reactor ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed ◽  
Fixed Film

Treatment of Tannery Wastewater and Moving-Bed Biofilm Reactor

2020 ◽  
Vol 17 ◽  
Author(s):  
Henrique Rech ◽  
Caroline Agustini ◽  
Mariliz Gutterres
Keyword(s):  
Activated Sludge ◽  
Surface Area ◽  
Biofilm Reactor ◽  
Operating Conditions ◽  
Tannery Wastewater ◽  
Organic Load ◽  
Moving Bed Biofilm Reactor ◽  
Leather Industry ◽  
Filling Fraction ◽  
Moving Bed

Abstract:: The leather industry is a fundamental sector, especially in countries with highly developed livestock as they use rawhide to produce high-value leather products. The leather-making process uses different chemicals and is a source of environmental pollution if the wastewater is not properly treated. Therefore, the purpose of this study is to analyze a Moving- Bed Biofilm Reactor (MBBR) as a new technology for the biological treatment of tannery wastewater. This system incorporates benefits provided by suspended growth systems, which are already consolidated in treating wastewater, including activated sludge and the advantage of growth adhered to biocarriers that have a large surface area. Therefore, incorporating activated sludge into MBBR enables the removal of both organic and nitrogen pollutants. Studies have shown that MBBR treatment efficiency depends on biocarrier surface area, composition, texture, and reactor operating conditions, such as filling fraction, hydraulic retention time, dissolved oxygen, and volumetric organic load.

Study on the Combination of Fixed Bed and Moving Bed Biofilm Reactor for Papermaking Terminal Wastewater Treatment

2013 ◽  
Vol 777 ◽  
pp. 309-313
Author(s):  
Zong Zheng Yang ◽  
Zhi Meng Yang ◽  
Jin Guo Cao ◽  
Yuan Yuan Jia ◽  
Jun Xia Xu
Keyword(s):  
Water Discharge ◽  
Black Liquor ◽  
Fixed Bed ◽  
Biofilm Reactor ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed ◽  
Paper Making ◽  
White Water ◽  
High Level

Papermaking wastewater mainly consists of black liquor, intermediate wastewater and white water. It suffers from its heavy amount, high level suspended solids and poor biodegradable property. In this paper, a combination of fixed bed and moving bed biofilm reactor was conducted to treat paper making wastewater in order to make full use of the advantages of both fixed bed and moving bed. As a result, the average values of COD, NH3-N and SS in effluent are 57.01 mg/L, 1.74 mg/L and 38 mg/L, respectively. The quality of the effluent could meet the demands of the Chinese standards for papermaking industrial water discharge pollutant.

Validating the Colloid model to optimise the design and operation of both moving-bed biofilm reactor and integrated fixed-film activated sludge systems

2014 ◽  
Vol 69 (7) ◽  
pp. 1552-1557 ◽  
Author(s):  
J. Albizuri ◽  
P. Grau ◽  
M. Christensson ◽  
L. Larrea
Keyword(s):  
Activated Sludge ◽  
Oxygen Demand ◽  
Biofilm Reactor ◽  
Nitrification Rate ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed ◽  
Fixed Film ◽  
Solids Retention ◽  
Lower Effect ◽  
Activated Sludge Systems

The paper presents a systematic study of simulations, using a previously calibrated Colloid model, from which it was found that: (i) for pure moving-bed biofilm reactor (MBBR) processes with tertiary nitrification conditions (no influent chemical oxygen demand (COD)), dissolved oxygen = 5 mg/L and residual NH4-N > 4 mgN/L, a nitrification rate of 1.2 gN/(m2d) was obtained at 10 °C. This rate decreases sharply when residual NH4-N is lower than 2 mgN/L, (ii) for MBBR systems with predenitrification–nitrification zones and COD in the influent (soluble and particulate), the nitrification rate (0.6 gN/(m2d)) is half of that in tertiary nitrification due to the effect of influent colloidal XS (particulate slowly biodegradable COD) and (iii) for integrated fixed-film activated sludge (IFAS) processes the nitrification rate in the biofilm (0.72 gN/(m2d)) is 20% higher than for the pure MBBR due to the lower effect of influent XS since it is adsorbed onto flocs. However, it is still 40% lower than the tertiary nitrification rate. In the IFAS, the fraction of the nitrification rate in suspension ranges from 10 to 70% when the aerobic solids retention time varies from 1.4 to 6 days.

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