Retention of granular sludge at high hydraulic loading rates in an anaerobic membrane bioreactor with immersed filtration

Hernandez, Antonio; Cerón, Luis Carlos Belalcázar; Rodríguez, Manuel Sánchez; Giraldo, Efrén

doi:10.2166/wst.2002.0321

Cited by 14 publications

(6 citation statements)

References 13 publications

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“…The production of soluble microbial products and the effect of these compounds on permeate flux in an AnMBR remains unclear. However, as suggested by Hernández et al (2002) , it is likely that an intermediate loading rate can maximize permeate flux in an AnMBR. They reported that permeate flux was greater at a medium loading rate (1.5 to 10 kg/m 3 ·d) than at a low loading rate (0.3 to 1 kg/m 3 ·d).…”

Section: Parameters Governing Permeate Flux In An Anaerobic Membrane mentioning

confidence: 96%

Parameters Governing Permeate Flux in an Anaerobic Membrane Bioreactor Treating Low‐Strength Municipal Wastewaters: A Literature Review

Bérubé¹,

Hall²,

Sutton³

2006

Water Environment Research

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The objective of this review was to conduct a comprehensive literature survey to identify the parameters that govern the permeate flux in an anaerobic membrane bioreactor (AnMBR) treating municipal wastewater. Based on the survey, research to date indicates that the optimal membrane system for an AnMBR consists of an organic, hydrophilic, and negatively charged membrane with a pore size of approximately 0.1 lm. The use of both external and submerged membrane configurations shows promise. The operating parameters that affect permeate flux in an external membrane system are transmembrane pressure (TMP) and cross-flow velocity. The operating parameters that affect permeate flux in a submerged membrane system are TMP, sparging intensity, and duration of the relaxation period. Both cross-flow velocity and sparging intensity impart a significant amount of shear force on the biomass in an AnMBR. High shear forces can reduce the microbial activity in an AnMBR. In addition, high shear forces can reduce the size of the biosolids in the mixed liquor and increase the release of soluble microbial products. In this respect, external and submerged membrane systems are expected to perform differently because the magnitude of the shear forces to which the biomass is exposed in an external membrane system is significantly greater than that in a submerged system. The size of the biosolid particles and concentration of soluble microbial products in the mixed liquor affect permeate flux. Higher concentrations of soluble microbial products may be present in the mixed liquor when an AnMBR is operated at relatively low operating temperatures. Aerobic polishing following anaerobic treatment can potentially significantly reduce the concentration of some components of the soluble microbial products in the mixed liquor. It is not possible to remove the foulant layer on an organic membrane with caustic cleaning alone. Acidic cleaning or acidic cleaning followed by caustic cleaning is required to remove the foulant layer. This suggests that both biological/organic and inorganic material contribute to membrane fouling. Water Environ. Res., 78, 887 (2006).

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Section: Parameters Governing Permeate Flux In An Anaerobic Membrane mentioning

confidence: 96%

Parameters Governing Permeate Flux in an Anaerobic Membrane Bioreactor Treating Low‐Strength Municipal Wastewaters: A Literature Review

Bérubé¹,

Hall²,

Sutton³

2006

Water Environment Research

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“…In an anaerobic membrane bioreactor with immersed filtration cartridges, retention of granular sludge at high hydraulic loading rates was studied. It showed that this kind of bioreactor maintained most of the advantages without biomass activity loss (Hernandez et al, 2002). Kang et al (2002) formation, backflushing and backfeeding effects were studied, and the differences between two types of membranes were explained by membrane morphology.…”

Section: Applications Andmentioning

confidence: 99%

Biological Fixed‐Film Systems

Yu¹,

Lin²,

Tian³

et al. 2003

Water Environment Research

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“…Fouling due to EPS can also be considered a particular type of organic fouling. Generally, higher organic loading rates cause higher residual CODs and lower membrane fluxes [62]. It has been found that cases of inorganic fouling are dealt with less effectively than organic or biofouling [59].…”

Section: Fouling In Anmbrsmentioning

confidence: 99%

Biofuel production potential from wastewater in India by integrating anaerobic membrane reactor with algal photobioreactor

Baral

Dionisi

Maarisetty

et al. 2020

Biomass and Bioenergy

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A critical analysis of the novel sewage treatment concept of anaerobic digestion followed by CO2 capture by microalgae has been carried out, with particular reference to India. The anaerobic process would convert the sewage COD into methane and CO2, the latter being converted into microalgae in a photobioreactor process, using sunlight as an energy source. The microalgae can be used to produce biofuels, co-fired with high yielding fuels (like coke) or just recycled back into the anaerobic digestion cycle as a substrate for methane production. Overall, this process would allow, at least in principle, the conversion of all the carbon in the municipal wastewaters into fuels. This study reports data on municipal wastewater generation and treatment facilities across the globe. The focus is then given to sewage generation and treatment in Indian cities, classified into metropolitan, Class-I and Class-II cities. Aerobic and anaerobic digestion processes for sewage treatment are then compared with a discussion on the advantages of the anaerobic membrane bioreactor (AnMBR). The advantages and limitations of photobioreactors for microalgae growth are discussed. Mass balances are then carried out with reference to sewage flows and concentrations in India, and the potential energy generation from the process is estimated. Overall, the complete process is envisaged to produce about 1.69×10 8 kWhd-1 of energy from biogas and microalgae. This has the potential to replace 3% of the recent total petroleum product consumption in India. The study goes towards "zero discharge" of waste to the environment, thus representing a promising sustainable development.

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Retention of granular sludge at high hydraulic loading rates in an anaerobic membrane bioreactor with immersed filtration

Cited by 14 publications

References 13 publications

Parameters Governing Permeate Flux in an Anaerobic Membrane Bioreactor Treating Low‐Strength Municipal Wastewaters: A Literature Review

Parameters Governing Permeate Flux in an Anaerobic Membrane Bioreactor Treating Low‐Strength Municipal Wastewaters: A Literature Review

Biological Fixed‐Film Systems

Biofuel production potential from wastewater in India by integrating anaerobic membrane reactor with algal photobioreactor

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