Effect of organic loading rate on the performance of a submerged anaerobic membrane bioreactor (SAnMBR) for malting wastewater treatment and biogas production

2018 ◽  
Vol 93 (6) ◽  
pp. 1636-1647 ◽  
Author(s):  
Esmat Maleki ◽  
Lionel JJ Catalan ◽  
Baoqiang Liao
Keyword(s):  
Wastewater Treatment ◽  
Membrane Bioreactor ◽  
Loading Rate ◽  
Biogas Production ◽  
Organic Loading Rate ◽  
Organic Loading ◽  
Anaerobic Membrane Bioreactor

scholarly journals Effect of Organic Loading Rate on the Biological Performance of the Thermophilic Anaerobic Membrane Bioreactor Treating Pulp and Paper Primary Sludge

2021 ◽  
Author(s):  
Alnour Bokhary ◽  
Mathew Leitch ◽  
Baoqiang Liao
Keyword(s):  
Membrane Bioreactor ◽  
Loading Rate ◽  
Value Added ◽  
Pulp And Paper ◽  
Operating Conditions ◽  
Waste To Energy ◽  
Organic Loading Rate ◽  
Organic Loading ◽  
Primary Sludge ◽  
Anaerobic Membrane Bioreactor

Abstract Waste-to-energy or value-added products have been increasingly considered in many pulp and paper mills (PPMs) worldwide. However, developing appropriate conversion technologies is a major challenge in transforming PPMs wastes into biofuels or value-added biomaterials. In the present study, a long-term (320 d) anaerobic digestion of primary sludge of a thermomechanical pulp mill (TMP) was carried out for the first time in a thermophilic anaerobic membrane bioreactor (ThAnMBR). Effect of organic loading rate (OLR) in the range of 2.5–6.8 kg-COD/m3 d and hydraulic retention times (HRT) of 3–8 d on the process performance was investigated. Under various OLRs, stable biogas productions were obtained, and the best results were achieved with lower OLR (2.5 kg-COD/m3 d) and higher HRT (8 d), at biogas yields of 189 L biogas/kg MLSS fed. However, it was found that biogas production and sludge biomass degradation decrease when the organic loading rate increases. The proportion of sludge reduction ranged from 28.9 to 46.7% depending on the applied OLRs. Despite varying OLRs, stable membrane performance was obtained, where the required membrane flux was easily maintained during the reactor operation. In this study, also the properties of digestate and membrane permeates were studied under different operating conditions, and they fluctuated to some extent with OLR. ThAnMBR is a promising new technology for pulp and paper mill primary sludge treatment.

Wastewater treatment by microalgal membrane bioreactor: Evaluating the effect of organic loading rate and hydraulic residence time

2021 ◽  
Vol 278 ◽  
pp. 111548
Author(s):  
A.K.M. Ashadullah ◽  
Md. Shafiquzzaman ◽  
Husnain Haider ◽  
Mohammad Alresheedi ◽  
Mohammad Shafiul Azam ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Residence Time ◽  
Membrane Bioreactor ◽  
Loading Rate ◽  
Organic Loading Rate ◽  
Organic Loading ◽  
Hydraulic Residence Time

Fouling in a novel airlift oxidation ditch membrane bioreactor (AOXMBR) at different high organic loading rate

2013 ◽  
Vol 105 ◽  
pp. 69-78 ◽  
Author(s):  
Farshid Pajoum Shariati ◽  
Mohammad Reza Mehrnia ◽  
Mohammad Hossein Sarrafzadeh ◽  
Sara Rezaee ◽  
Alain Grasmick ◽  
...  
Keyword(s):  
Membrane Bioreactor ◽  
Loading Rate ◽  
Organic Loading Rate ◽  
Oxidation Ditch ◽  
Organic Loading ◽  
Airlift Oxidation Ditch

scholarly journals The feasibility of trace element supplementation for stable operation of wheat stillage-fed biogas tank reactors

2011 ◽  
Vol 64 (2) ◽  
pp. 320-325 ◽  
Author(s):  
J. Gustavsson ◽  
B. H. Svensson ◽  
A. Karlsson
Keyword(s):  
Trace Element ◽  
Hydraulic Retention Time ◽  
Loading Rate ◽  
Biogas Production ◽  
Organic Loading Rate ◽  
Stable Operation ◽  
Organic Loading ◽  
Process Stability ◽  
Volatile Solids ◽  
High Sulfate

The aim of this study was to investigate the effect of trace element supplementation on operation of wheat stillage-fed biogas tank reactors. The stillage used was a residue from bio-ethanol production, containing high levels of sulfate. In biogas production, high sulfate content has been associated with poor process stability in terms of low methane production and accumulation of process intermediates. However, the results of the present study show that this problem can be overcome by trace element supplementations. Four lab-scale wheat stillage-fed biogas tank reactors were operated for 345 days at a hydraulic retention time of 20 days (37 °C). It was concluded that daily supplementation with Co (0.5 mg L−1), Ni (0.2 mg L−1) and Fe (0.5 g L−1) were required for maintaining process stability at the organic loading rate of 4.0 g volatile solids L−1 day−1.

Sign in / Sign up

Export Citation Format

Share Document