scholarly journals Anaerobic membrane bioreactor for high-strength wastewater treatment: batch and continuous operation comparison

2015 ◽  
Vol 5 (2) ◽  
pp. 95-103 ◽  
Author(s):  
D. Hufnagel ◽  
S. Chang ◽  
Y. Hong ◽  
P. Wu ◽  
R. G. Zytner
Keyword(s):  
Membrane Filtration ◽  
Membrane Bioreactor ◽  
Biomass Concentration ◽  
High Strength ◽  
High Rate ◽  
Organic Loading Rate ◽  
Brewery Wastewater ◽  
Batch Operation ◽  
Anaerobic Membrane Bioreactor ◽  
Continuous Feeding

The anaerobic membrane bioreactor (AnMBR) is a recent development in high-rate anaerobic bioreactors. This study assessed the treatment of high-strength wastewater by an AnMBR using batch and continuous feeding operation. The results showed that the AnMBR could establish a biomass concentration of 6–8 g/L in approximately 20 days due to retention of micro-organisms by the membrane, resulting in 86% chemical oxygen demand (COD) removal efficiency in the treatment of high-strength brewery wastewater. Batch operation was proven to be effective for an organic loading rate (OLR) up to 2 gCOD/L/day and was beneficial to the membrane filtration. However, the treatment capacity of the AnMBR with batch feeding was limited by the high instantaneous OLR during the feeding period. Compared to batch operation, continuous feeding can achieve improved stability and better effluent quality, but prolonged continuous permeation may make the membrane more susceptible to fouling. Although a critical flux of 22 L/m2/h was determined for the membrane filtration in the AnMBR tested, a decrease in the membrane permeability was still observed in the long-term filtration at a flux of approximately 10 L/m2/h.

The First Two Years of Full-Scale Anaerobic Membrane Bioreactor (AnMBR) Operation Treating High-Strength Industrial Wastewater

2011 ◽  
Vol 6 (2) ◽  
Author(s):  
Scott Christian ◽  
Shannon Grant ◽  
Peter McCarthy ◽  
Dwain Wilson ◽  
Dale Mills
Keyword(s):  
Industrial Wastewater ◽  
Membrane Filtration ◽  
Membrane Bioreactor ◽  
High Strength ◽  
System Capacity ◽  
Superior Performance ◽  
Organic Load ◽  
Design Parameters ◽  
Innovative Technology ◽  
Anaerobic Membrane Bioreactor

The anaerobic membrane bioreactor (AnMBR) incorporates anaerobic digestion and membrane filtration in one process to form an innovative technology for treating high-strength industrial wastewater. The first AnMBR installation in North America, also known as the largest AnMBR installation in the world, was built at Ken's Foods in Massachusetts, USA. Ken's Foods existing anaerobic process was upgraded to AnMBR in July 2008 to treat raw wastewater from the production of salad dressings and barbeque sauces. The system was converted to AnMBR due to lack of space, positive economics, and the ability to provide additional capacity for flow and organic load beyond the original anaerobic system design parameters. This AnMBR system has a design influent flow rate of 475 m3/d with 39,000 mg/l COD, 18,000 mg/l BOD, and 12,000 mg/l TSS. The AnMBR system consistently produces a high quality effluent with non-detectable TSS concentrations and average COD and BOD concentrations of 210 and 20 mg/l, with removals of 99.4 and 99.9 percent, respectively. The AnMBR system provides superior performance and a very low rate of membrane fouling with the aid of biogas scour across the membrane surface. The first 20 months of AnMBR operating expenses were reduced by 50 compared to the prior 12-month fiscal period due to increased system capacity, ability to treat wastewater with higher biomass, and elimination of the need to dewater and dispose of dewatered solids.

The Future Challenges of Anaerobic Membrane Bioreactor (AnMBR) for High Strength Wastewater

2021 ◽  
Vol 25 (3) ◽  
pp. 81-92
Author(s):  
S. Salaeh ◽  
W. Khongnakorn ◽  
W. Chaipetch
Keyword(s):  
Retention Time ◽  
Membrane Filtration ◽  
Membrane Bioreactor ◽  
High Strength ◽  
High Energy ◽  
Membrane Distillation ◽  
Economic Feasibility ◽  
Operating Conditions ◽  
Solid Retention Time ◽  
Anaerobic Membrane Bioreactor

This article is to present a review of anaerobic membrane bioreactor (AnMBR), process, operational condition, fouling mechanism and future challenge for high strength wastewater. Since1969s, membrane filtration technology has been used and continuously developed for wastewater treatment and recovery. AnMBR has proposed for the economic feasibility owing to the low footprint, high yield production under the relatively low energy consumption. Continuous stirred tank reactor (CSTR) configuration is the widely used couple with a flat sheet or hollow fibre modules. The various factors of operating condition are influence on the performance such as hydraulic retention time (HRT= 6 – 12 d), solid retention time (SRT > 100 d) and operating temperature (T = 10 - 56oC). In addition, the increase in temperature is related to high methanogenic activity and high COD removal efficiency (85% - 99%). However, the limitation of this process is fouling that occurs from the soluble microbial product (SMP), exopolymer substance (EPS) and biopolymer cluster (BPC). Almost of appropriate operating conditions for high performance, anti-fouling, the majority of effective microorganisms and energy balance are discussed in detail. For the challenge work, improvement of the prevention membrane fouling and high energy recovery in the hybrid/combination system with forward osmosis (FO), membrane distillation (MD) and powder activated carbon (PAC)-AnMBR.

Development of a high-rate submerged anaerobic membrane bioreactor

2017 ◽  
Vol 39 (5) ◽  
pp. 640-650 ◽  
Author(s):  
I. Mahmoud ◽  
W. J. Gao ◽  
B. Q. Liao ◽  
J. Cumin ◽  
M. Dagnew ◽  
...  
Keyword(s):  
Membrane Bioreactor ◽  
High Rate ◽  
Anaerobic Membrane Bioreactor

scholarly journals Newly Designed Hydrolysis Acidification Flat-Sheet Ceramic Membrane Bioreactor for Treating High-Strength Dyeing Wastewater

2019 ◽  
Vol 16 (5) ◽  
pp. 777 ◽  
Author(s):  
Yue Jin ◽  
Dunqiu Wang ◽  
Wenjie Zhang
Keyword(s):  
Membrane Bioreactor ◽  
Ceramic Membrane ◽  
Removal Rate ◽  
High Strength ◽  
Organic Loading Rate ◽  
Pseudomonas Sp ◽  
Dyeing Wastewater ◽  
Flat Sheet ◽  
Cost Effective Treatment ◽  
Hydrolysis Acidification

Cost-effective treatment of dyeing wastewater remains a challenge. In this study, a newly designed hydrolysis acidification flat-sheet ceramic membrane bioreactor (HA-CMBR) was used in treating high-strength dyeing wastewater. The start-up phase of the HA-CMBR was accomplished in 29 days by using cultivated seed sludge. Chemical oxygen demand (COD) removal rate reached about 62% with influent COD of 7800 mg/L and an organic loading rate of 7.80 kg-COD/(m3·d). Chromaticity removal exceeded 99%. The results show that the HA-CMBR has good removal performance in treating dyeing wastewater. The HA-CMBR could run with low energy consumption at trans-membrane pressure (TMP) <10 kPa due to the good water permeability of the flat-sheet ceramic membrane. New strains with 92%–96% similarity to Alkalibaculum bacchi, Pseudomonas sp., Desulfovibrio sp., and Halothiobacillaceae were identified in the HA-CMBR. Microbial population analysis indicated that Desulfovibrio sp., Deltaproteobacteria, Halothiobacillaceae, Alkalibaculum sp., Pseudomonas sp., Desulfomicrobium sp., and Chlorobaculum sp. dominated in the HA-CMBR.

scholarly journals A novel anaerobic filter membrane bioreactor: prototype start-up and filtration assays

2018 ◽  
Vol 78 (9) ◽  
pp. 1833-1842 ◽  
Author(s):  
V. Diez ◽  
A. Iglesias ◽  
J. M. Cámara ◽  
M. O. Ruiz ◽  
C. Ramos
Keyword(s):  
Membrane Fouling ◽  
Membrane Bioreactor ◽  
Fixed Bed ◽  
Biomass Concentration ◽  
Organic Loading Rate ◽  
Cycle Duration ◽  
Concentrated Suspension ◽  
Efficient Treatment ◽  
Anaerobic Filter ◽  
Filter Membrane

Abstract Anaerobic digestion allows efficient treatment of high loaded wastewater, and membrane technology allows obtaining high quality effluents with complete biomass retention. However, high biomass concentration interferes with membrane fouling. In the present work, a new bioreactor that integrates an attached biomass anaerobic culture on a fixed bed and a submerged membrane has been started up. The recirculation between the digestion and filtration chambers is coupled to the gas-lift effect of the bubbling employed for the scouring of the membranes, avoiding the use or electromechanical pumps that damage the suspended biomass. The support material retains the biomass in the digestion tank despite the downwards flow, avoiding the submerged membrane contacting with a high concentrated suspension. This novel system, called an anaerobic filter membrane bioreactor was immediately started up, achieving chemical oxygen demand (COD) removal efficiencies of 96% at an organic loading rate (OLR) of 7 kg COD/m3·d. In order to select filtration flux, specific gas demand and filtration cycle duration, the results of 15 short term assays, eight hours for each one, is presented for fluxes between 15.7 and 17.7 L/m2·h, cycle duration between 10 and 30 minutes, and three levels of scouring. It was checked that reversible and irreversible fouling were directly related when dTMP/dt &gt; 2.5 mbar/min.

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