scholarly journals Rapid start-up of expanded granular sludge bed (EGSB) reactor using granulated anaerobic bacteria in pharmaceutical wastewater treatment: pilot scale

2021 ◽  
Vol 980 ◽  
pp. 012078
Author(s):  
R A Malik ◽  
H Vistanty ◽  
A Mukimin ◽  
N Zen
Keyword(s):  
Wastewater Treatment ◽  
Anaerobic Bacteria ◽  
Granular Sludge ◽  
Pilot Scale ◽  
Pharmaceutical Wastewater ◽  
Start Up

The potential of anaerobic bacteria to degrade chlorinated compounds

2001 ◽  
Vol 44 (8) ◽  
pp. 49-56 ◽  
Author(s):  
M.H.A. van Eekert ◽  
G. Schraa
Keyword(s):  
Anaerobic Bacteria ◽  
Granular Sludge ◽  
Chlorinated Ethenes ◽  
Contaminated Sites ◽  
Contaminated Site ◽  
Anaerobic Conditions ◽  
Chlorinated Aromatics ◽  
Start Up ◽  
Acetogenic Bacteria ◽  
Uasb Reactors

Chlorinated ethenes and chlorinated aromatics are often found as pollutants in sediments, groundwater, and wastewater. These compounds were long considered to be recalcitrant under anaerobic conditions. In the past years however, dechlorination of these compounds has been found to occur under anaerobic conditions at contaminated sites and in wastewater treatment systems. This dechlorination is mainly attributed to halo-respiring bacteria, which are able to couple this dechlorination to energy conservation via electron transport coupled phosphorylation. The dechlorinating activities of the halo-respiring bacteria seem to be confined to the dechlorination of chloroethenes and chlorinated aromatic compounds. In addition, methanogenic and acetogenic bacteria are also able to reduce the chlorinated ethenes via a-specific cometabolic pathways. Although these latter reactions may not be important in the remediation of contaminated sites, they may be of substantial influence in the start-up of remediation processes and in the application of granular sludge from UASB reactors. Specific halo-respiring bacteria may be used to increase the dechlorination activities via bioaugmentation in the case that the appropriate microorganisms are not present at the contaminated site or in the sludge.

Advanced start up of UASB reactors by adding of water absorbing polymer

1997 ◽  
Vol 36 (6-7) ◽  
pp. 399-406 ◽  
Author(s):  
Tsuyoshi Imai ◽  
Masao Ukita ◽  
Jun Liu ◽  
Masahiko Sekine ◽  
Hiroshi Nakanishi ◽  
...  
Keyword(s):  
Volatile Fatty Acid ◽  
Granular Sludge ◽  
Pilot Scale ◽  
Synthetic Wastewater ◽  
Recommended Dosage ◽  
Digested Sludge ◽  
New Approach ◽  
Start Up ◽  
Scale Experiment ◽  
Uasb Reactors

We have developed a new approach to enhance granulation by adding water absorbing polymer (WAP) particles into the inoculated digested sludge. In this study, the effect of adding WAP on formation of anaerobic granular sludge was evaluated in lab-scale UASB reactors using two typical synthetic wastewater, i.e. glucose or volatile fatty acid (VFA) mixture solution. In addition, side by side with the lab-scale experiment, a pilot-scale experiment using the VFA mixture was carried out to evaluate the availability of accelerated start-up by adding WAP. The development of granular sludge was significantly enhanced by adding WAP. Granules developed on glucose and VFAs had high methanogenic activities and good settleability. From results of lab-scale experiment, the recommended dosage of WAP was about 750 mg/l of reactor volume. The results, pilot-scale experiment, indicated the availability of accelerated start-up by adding WAP.

Pilot-scale aerobic granular sludge in the treatment of municipal wastewater: Optimizations in the start-up, methodology of sludge discharge, and evaluation of resource recovery

2020 ◽  
Vol 311 ◽  
pp. 123467 ◽  
Author(s):  
Silvio Luiz de Sousa Rollemberg ◽  
Lorayne Queiroz de Oliveira ◽  
Amanda Nascimento de Barros ◽  
Paulo Igor Milen Firmino ◽  
André Bezerra dos Santos
Keyword(s):  
Municipal Wastewater ◽  
Granular Sludge ◽  
Resource Recovery ◽  
Pilot Scale ◽  
Aerobic Granular Sludge ◽  
Start Up

Performance and Modeling of a Pilot-Scale Up-Flow Anaerobic Sludge Blanket (UASB) Treating Pharmaceutical Wastewater Containing Berberine

2012 ◽  
Vol 518-523 ◽  
pp. 2625-2630 ◽  
Author(s):  
Ya Dong Guo ◽  
Cui Ting Fu ◽  
Guo Rong Liu ◽  
Chun Shuang Liu
Keyword(s):  
Scale Up ◽  
Back Propagation ◽  
Oxygen Demand ◽  
Granular Sludge ◽  
Pilot Scale ◽  
Uasb Reactor ◽  
Anaerobic Sludge ◽  
Pharmaceutical Wastewater ◽  
Average Percentage ◽  
Anaerobic Sludge Blanket

A pilot-scale test was conducted with an up-flow anaerobic sludge blanket (UASB) treating pharmaceutical wastewater containing berberine. The aim of this study was to investigate the performance of UASB in the condition of a high chemical oxygen demand (COD) loading rate from 4.64 to 8.68 kg/m3d and a wide berberine concentration from 254 to 536 mg/L, in order to provide a reference for treating the similar pharmaceutical wastewater containing berberine. The results demonstrated that the UASB average percentage reduction in COD and berberine 68.14% and 57.39%, respectively. Granular sludge was formed during this process. In addition, a model, built on the back propagation neural network (BPNN) theory and linear regression techniques was developed for the simulation of the UASB system performance in the biodegradation of pharmaceutical wastewater containing berberine. The average errors of COD and berberine were -0.55% and 0.24%, respectively. The results indicated that this model built on the BPNN theory was well-fitted to the detected data, and was able to simulate and predict the removal of COD and berberine by UASB reactor.

Treatment of real domestic sewage in a pilot‐scale aerobic granular sludge reactor: Assessing start‐up and operational control

2020 ◽  
Author(s):  
Fábio Campos ◽  
Natália Rodrigues Guimarães ◽  
Fernanda Cunha Maia ◽  
Marcel Zanetti Sandoval ◽  
João Paulo Bassin ◽  
...  
Keyword(s):  
Granular Sludge ◽  
Pilot Scale ◽  
Domestic Sewage ◽  
Aerobic Granular Sludge ◽  
Operational Control ◽  
Start Up

Advance Aerobic Granular Sludge Development for the Treatment of Low Strength Wastewater

2021 ◽  
Author(s):  
Hazlami Fikri Basri ◽  
Aznah Nor Anuar ◽  
Mohd Hakim Ab Halim ◽  
Muhammad Ali Yuzir
Keyword(s):  
Batch Reactor ◽  
Physical Stability ◽  
Domestic Wastewater ◽  
Granular Sludge ◽  
Pilot Scale ◽  
Phosphate Removal ◽  
Aerobic Granular Sludge ◽  
Start Up ◽  
Low Strength ◽  
Advanced Development

Abstract The aim of the present study was to assess the start-up performance of aerobic granular sludge for the treatment of low-strength (COD <200 mg L−1) domestic wastewater by the application of a diatomite carrier. The feasibility was evaluated in terms of the start-up period and stability of the aerobic granules as well as COD and phosphate removal efficiencies. A single pilot-scale Sequencing Batch Reactor (SBR) was used and operated separately for the control granulation and granulation with diatomite. Complete granulation (granulation rate ≥ 90%) was achieved within 20 days for the case of diatomite with an average influent COD concentration of 184 mg L−1. In comparison, control granulation required 85 days to accomplish the same feat with a higher average influent COD concentration (253 mg L−1). The presence of diatomite solidifies the core of the granules and enhances physical stability. Diatomite granules recorded the strength and SVI of 18 IC and 53 mL/g SS which clearly superior to control granulation (19.3 IC, 81 mL/g SS). Quick start-up and achievement of stable granules lead to an efficient COD (89%) and phosphate removal (74%) in 50 days of bioreactor operation. Interestingly, this study revealed that diatomite has some special mechanism in enhancing the removal of both COD and phosphate. The result of this research implies that the advanced development of granular sludge by using diatomite can provide a promising low-strength wastewater treatment.

Sustainable integrated biological wastewater treatment

1996 ◽  
Vol 33 (3) ◽  
pp. 85-98 ◽  
Author(s):  
G. Lettinga
Keyword(s):  
Wastewater Treatment ◽  
Low Temperatures ◽  
Granular Sludge ◽  
Anaerobic Sludge ◽  
Biological Wastewater Treatment ◽  
Anaerobic Wastewater Treatment ◽  
The Core ◽  
Start Up ◽  
Wide Range ◽  
Potential Benefits

The actual and potential benefits of anaerobic wastewater treatment when implemented at the core of a sustainable and non-vulnerable environmental protection programme are described. The paper focuses on the anaerobic sludge bed (and in particular the expanded granular sludge bed (EGSB)) reactor concept. Start-up of these systems is shown to be rapid, within a few days with granular seed sludges, and they may be applied across a wide range of conditions and strengths of wastewater. EGSB systems are particularly suited to low temperatures (10°C) and very low strengths (&lt;&lt;1000mg/1) and for the treatment of recalcitrant or toxic substrates.

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