Anaerobic membrane bioreactor (AnMBR) for domestic wastewater treatment

Lew, Beni; Tarre, Sheldon; Beliavski, Michael; Dosoretz, Carlos G.; Green, M.

doi:10.1016/j.desal.2008.04.027

Cited by 128 publications

(74 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The significant reduction in COD could be attributed to the oxidation reactions due to aeration in combination with activated sludge and the posterior treatment by UF. Obtained results also agree with those of Lew et al, [48] who observed an 88% for COD removal from wastewaters treated by MBR. According to Wintgens et al [23] and Clara et al [49] MBR could remove more than 80% of potential EDCs from wastewaters, which is also in agreement with obtained results.…”

Section: Removal Of Endocrine-disrupting Compounds By Biological and supporting

confidence: 83%

Comparison of different wastewater treatments for removal of selected endocrine-disruptors from paper mill wastewaters

Balabanič

Hermosilla

Merayo

et al. 2012

Journal of Environmental Science and Health, Part A

View full text Add to dashboard Cite

There is increasing concern about chemical pollutants that have the ability to mimic hormones, the socalled endocrine disrupting compounds (EDCs). One of the main reasons for concern is the possible effect of EDCs on human health. EDCs may be released into the environment in different ways, and one of the most significant sources is industrial wastewater. The main objective of this research was to evaluate the treatment performance of different wastewater treatment procedures (biological treatment, filtration, advanced oxidation processes) for the reduction of chemical oxygen demand and seven selected EDCs (dimethyl phthalate, diethyl phthalate, dibutyl phthalate, benzyl butyl phthalate, bis(2-ethylhexyl) phthalate, bisphenol A and nonylphenol) from wastewaters from a mill producing 100% recycled paper. Two pilot plants were running in parallel and the following treatments were compared: (i) anaerobic biological treatment followed by aerobic biological treatment, ultrafiltration and reverse osmosis (RO), and (ii) anaerobic biological treatment followed by membrane bioreactor and RO. Moreover, at lab-scale, four different advanced oxidation processes (Fenton reaction, photo-Fenton reaction, photocatalysis with TiO2, and ozonation) were applied. The results indicated that the concentrations of selected EDCs from paper mill wastewaters were effectively reduced (100%) by both combinations of pilot plants and photoFenton oxidation (98%), while Fenton process, photocatalysis with TiO2 and ozonation were less effective (70% to 90%, respectively).

show abstract

Section: Removal Of Endocrine-disrupting Compounds By Biological and supporting

confidence: 83%

Comparison of different wastewater treatments for removal of selected endocrine-disruptors from paper mill wastewaters

Balabanič

Hermosilla

Merayo

et al. 2012

Journal of Environmental Science and Health, Part A

View full text Add to dashboard Cite

show abstract

“…The membrane is able to retain the biomass and microorganisms in the digester also resulting in a waste effluent with high solids concentration. Moreover, the permeate that is collected as a result of the membrane installation is solids-free (Lew et al, 2009). Due to all these advantages, AnMBRs are gaining popularity in the waste water industry.…”

Section: Anaerobic Membrane Bioreactorsmentioning

confidence: 99%

Effect of Pre-treatment using Ultrasound and Hydrogen Peroxide on Digestion of Waste Activated Sludge in an Anaerobic Membrane Bioreactor

Joshi¹,

Parker²

2014

proc water environ fed

View full text Add to dashboard Cite

The rate of anaerobic digestion (AD) often depends on the rate-limiting hydrolysis step that makes organics available to microorganisms. To achieve efficient conversion of particulates to soluble materials and finally methane, the biomass in the digester must be provided with optimal operational conditions that will allow for biomass retention and substrate metabolism. Two approaches were employed in this study to improve the ultimate biodegradability of waste activated sludge (WAS) -Pre-treatment (PT) and operation using an Anaerobic Membrane Bioreactor (AnMBR).PT of WAS is one way of speeding up hydrolysis. It has been proposed that PT leads to the lysis of cells, which in turn causes the release and solubilisation, and thus availability of intracellular matter to microorganisms for microbial growth and metabolic activities. This study compared the effect of thermal, sonication, and sonication + hydrogen peroxide PT on chemical oxygen demand (COD) solubilisation of WAS. Based on the soluble COD (SCOD) release, it was concluded that combined chemi-sonic treatment resulted in better WAS degradation rather than individual ultrasonic pre-treatment and thermal PT. The highest solubilisation rate was observed at a chemi-sonic PT of 50gH 2 O 2 /kgTS and sonication duration of 60 minutes. At this PT, a COD solubilisation of 40% was observed which was significantly different than PT involving only sonication and no pre-treatment (0.88%) at 95% confidence. Therefore a peroxide-sonic PT was chosen to treat WAS in this study as it was expected to result in the greatest improvement in WAS biodegradability.In addition to PT, biodegradability of WAS can also be improved by coupling PT with an AnMBR. AnMBRs prevent biomass washout by decoupling the solids retention time (SRT) from the hydraulic retention time (HRT). Thus, a long SRT can be used to provide sufficient duration for biological activities without increasing the volume of the reactor. In this study, a 4.5L AnMBR with an HRT and SRT of 3 and 20 days, respectively was used to treat raw and PT WAS. In order to compare the biodegradability of PT and raw WAS, the AnMBR was operated in three phases. Phase 1 was operated with raw WAS, Phase 2 was operated with WAS pretreated with 50 gH 2 O 2 /kgTS and 20 minutes ultrasound (US), and Phase 3 was operated with WAS pre-treated with 50 gH 2 O 2 /kgTS and 60 minutes US. The anaerobic biodegradability of WAS following a combination of ultrasonic pre-treatment and H 2 O 2 addition was significantly improved, with Phase 3 resulting in the greatest improvement. The COD destruction for phases 1, 2, and 3 were 49%, 58%, and 63%, respectively whereas the volatile suspended solids (VSS) destruction for phases 1, 2, and 3 were 46%, 71%, and 77% respectively. Organic Nitrogen (Org-N) destruction increased from 44% to 52% for phases 1 and 2 respectively. A further increase of 18% in Org-N destruction was observed in phase 3. This improvement in biodegradability of WAS was attributed to the high solubilisations of COD, VSS, and ON...

show abstract

“…Therefore, an external energy source is usually needed to heat the reactor to mesophilic conditions [6]. According to Martín et al [7], if the influent wastewater temperature is around 15 ºC, then COD levels must be higher than 4 -5 g·L -1 in order to generate enough biogas to heat the reactor to 35 °C.…”

mentioning

confidence: 99%

Designing an AnMBR-based WWTP for energy recovery from urban wastewater: The role of primary settling and anaerobic digestion

Pretel

Durán

Robles

et al. 2015

Separation and Purification Technology

View full text Add to dashboard Cite

Elsevier Pretel, R.; Durán Pinzón, F.; Robles Martínez, Á.; Ruano García, MV.; Ribes Bertomeu, J.; Serralta Sevilla, J.; Ferrer, J. (2015). Designing an AnMBR-based WWTP for energy recovery from urban wastewater: The role of primary settling and anaerobic digestion. AbstractThe main objective of this paper is to assess different treatment schemes for designing a submerged anaerobic membrane bioreactor (AnMBR) based WWTP.

show abstract

Anaerobic membrane bioreactor (AnMBR) for domestic wastewater treatment

Cited by 128 publications

References 9 publications

Comparison of different wastewater treatments for removal of selected endocrine-disruptors from paper mill wastewaters

Comparison of different wastewater treatments for removal of selected endocrine-disruptors from paper mill wastewaters

Effect of Pre-treatment using Ultrasound and Hydrogen Peroxide on Digestion of Waste Activated Sludge in an Anaerobic Membrane Bioreactor

Designing an AnMBR-based WWTP for energy recovery from urban wastewater: The role of primary settling and anaerobic digestion

Contact Info

Product

Resources

About