Microbial community and biomass characteristics associated severe membrane fouling during start-up of a hybrid anoxic–oxic membrane bioreactor

Li, Jianfeng; Yang, Fenglin; Liu, Yu; Song, Huiping; Li, Da; Cheng, Fangqin

doi:10.1016/j.biortech.2011.09.079

Cited by 40 publications

(8 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…MBRs can however fail to process the desired volume of wastewater if extreme caking, fouling or low biomass filterability occurs (Judd and Judd, 2011a,b). Additionally due to the necessity of constant membrane agitation, and chemical cleaning for removal of fouling, the capital and operational costs of ownership of MBRs is higher than for CAS processes (Le-Clech, 2010;Kraemer et al, 2012;Li et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

A review of practical tools for rapid monitoring of membrane bioreactors

2016

View full text Add to dashboard Cite

The production of high quality effluent from membrane bioreactors (MBRs) arguably requires less supervision than conventional activated sludge (CAS) processes. Nevertheless, the use of membranes brings additional issues of activated sludge filterability, cake layer formation and membrane fouling. From a practical standpoint, process engineers and operators require simple tools which offer timely information about the biological health and filterability of the mixed liquor as well as risks of membrane fouling. To this end, a range of analytical tools and biological assays are critically reviewed from this perspective. This review recommends that Capillary Suction Time (CST) analysis along with Total Suspended and Volatile Solids (TSS/VSS) analysis is used daily. For broad characterisation, total carbon and nitrogen analysis offer significant advantages over the commonly used chemical and biological oxygen demand (COD/BOD) analyses. Of the technologies for determining the vitality of the microbial biomass the most robust and reproducible, are the second generation adenosine-5'-triphosphate (ATP) test kits. Extracellular polymer concentrations are best monitored by measurement of turbidity after centrifugation. Taken collectively these tools can be used routinely to ensure timely intervention and smoother operation of MBR systems.

show abstract

Section: Introductionmentioning

confidence: 99%

A review of practical tools for rapid monitoring of membrane bioreactors

2016

View full text Add to dashboard Cite

show abstract

“…The abundance diminishing of Cytophagales and the vanishing of Proteobacteria probably caused the destruction of cytoderm and promoted the soluble substances augment in solution. This could be proved indirectly by previous literature, which pointed out that the dynamic change of bacterial community structure would be the main reason for the variation of soluble fractions after the microbes cell lysis or vanished (Li et al, 2012). In addition, the lysozyme digestion process presented an positive influence on excess sludge reduction (Fig.…”

Section: Resultsmentioning

confidence: 55%

“…The dynamics of microbial communities, especially the dominant microbial population, played an important role in the functionality of an ecosystem in biosolids. For example, the b-Proteobacteria could generate and release extracellular polymeric substances (EPS) which had significant effect for maintaining the sludge flocs stable when it was the prior species (Li et al, 2012;Monique et al, 2008). Then the soluble organic fraction of sludge got improved with microbial community varying affected by lysozyme disintegration.…”

Section: Introductionmentioning

confidence: 99%

Microbial community related to lysozyme digestion process for boosting waste activated sludge biodegradability

Xin

Qiu

et al. 2015

Bioresource Technology

View full text Add to dashboard Cite

“…Experimental conditions: crossflow velocity and temperature of both feed and DS of 30 cm/s and 50˚C, respectively [14]. and SMP contribute to higher fouling on membrane over the protein fractions [111,112].…”

Section: Feedwater Characteristicsmentioning

confidence: 99%

Recent developments in forward osmosis membrane bioreactors: a comprehensive review

Eyvaz

Aslan

Arslan

et al. 2016

Desalination and Water Treatment

View full text Add to dashboard Cite

Forward osmosis or osmotic membrane bioreactor (FOMBR) has attracted great attention for wastewater treatment and reuse since conceptually introduced as a process. It has been proposed to reduce the high energy consumption in the conventional MBR, has lower membrane fouling propensity, and produce higher quality water. Moreover, RO process can be used after FOMBR to reconcentrate the diluted DS to be used for FO again. Besides significant advantages, when compared to conventional MBRs; lower water flux, concentration polarization, and salt accumulation because of high retention of FO in the bioreactor still remains as major drawbacks and challenges of FOMBR systems that need to be solved. In the last few years, many advances in development of FOMBR are stated to overcome the drawbacks of the system. The researches focused on manufacturing of high performance FO membranes and orientation, utilizing various different draw solutions providing required osmotic pressure and minimum reverse salt flux, and recently hybrid systems to alleviate the salt accumulation in bioreactor. However, the main critical challenges of FOMBR have not been completely resolved yet. This paper reviews the design and applications of FOMBR process in wastewater treatment. Particular focus was given to reverse salt flux and effects of the system performance; recent developments in FOMBR applications from beginning till today are reported.

show abstract

Microbial community and biomass characteristics associated severe membrane fouling during start-up of a hybrid anoxic–oxic membrane bioreactor

Cited by 40 publications

References 28 publications

A review of practical tools for rapid monitoring of membrane bioreactors

A review of practical tools for rapid monitoring of membrane bioreactors

Microbial community related to lysozyme digestion process for boosting waste activated sludge biodegradability

Recent developments in forward osmosis membrane bioreactors: a comprehensive review

Contact Info

Product

Resources

About