Biofouling Aspects and Critical Flux Evaluation in an Intermittently Aerated and Fed Submerged Membrane Bioreactor

Melidis, Paraschos; Ntougias, Spyridon; Vasilatou, Varvara; Skouteris, George; Azis, Konstantinos; Diamantis, Vasileios; Alexandridis, Alexandros

doi:10.1007/s40710-016-0159-x

Cited by 7 publications

(4 citation statements)

References 40 publications

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“…The preliminary system achieved average COD and TN reduction of approximately 32%, while the average COD and TN removal efficiency at the extended aeration stage reached the values of 95% and 85% respectively. These removal rates are representative of high MLSS concentration processes, such as membrane AS processes [19,20]. Furthermore, high MLVSS concentration processes can better handle increases of organic load in influent and can improve nitrogen removal by enhancing nitrifying bacteria growth [20].…”

Section: Wwtp-1mentioning

confidence: 99%

Innovative Approach on Aerobic Activated Sludge Process towards more Sustainable Wastewater Treatment

et al. 2018

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This work presents an innovative approach on aerobic activated sludge (AS) wastewater treatment plants’ (WWTP) design and operation towards more efficient wastewater treatment, minimization of sludge accumulation and significant reduction of excess sludge, with relatively low specific energy consumption. This approach, which is called complete solids retention activated sludge (CRAS) process, was applied on a slaughterhouse’s WWTP and on a fruit processing industry’s WWTP, characterized by high organic and volumetric load respectively, as well as on a municipal WWTP located in Paralimni, Cyprus. The results showed without using sophisticated technologies and processes a more sustainable WWTP operation can be achieved.

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Section: Wwtp-1mentioning

confidence: 99%

Innovative Approach on Aerobic Activated Sludge Process towards more Sustainable Wastewater Treatment

et al. 2018

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“…Membrane backwashing steps of 1 min were regularly performed every 10 min of membrane filtration. It is noteworthy to highlight the automated operation of the pilot-scale MBR system: the operation of all peristaltic pumps, the dissolved oxygen meter, the level sensors and the pressure transmitter were controlled by several Programmable Logic Controllers (PLCs), which are widely used for automation of typical industrial processes by other researchers as well (Melidis et al 2016). This programming allowed the automatic backwashing of membranes through pneumatic electro-valves.…”

Section: Pilot-scale Mbr Operationmentioning

confidence: 99%

Wastewater Treatment in Membrane Bioreactors: The Use of Polyelectrolytes to Control Membrane Fouling

et al. 2016

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The present study investigates the addition of several commercially available cationic (FO 4000 SSH and ADIFLOC series) and anionic (LT-25 Magnafloc) polyelectrolytes in a fully automated, pilot-scale Membrane Bioreactor (MBR), aiming to the development of an integrated methodology for the control of membrane fouling in MBR treatment systems. For this purpose, a series of batch experiments were conducted in order to evaluate their effectiveness on membrane fouling mitigation, using a typical hollow fiber, commercially available microfiltration membrane. Reversible fouling was assessed in terms of sludge filterability tests, whereas irreversible fouling was assessed in terms of SMPs (Soluble Microbial Products) concentration measurements. Results showed that the addition of cationic polyelectrolytes FO 4000 SSH series and ADIFLOC series were found capable to reduce both reversible and irreversible fouling. More specifically, the FO 4350 SSH type exhibited a remarkable performance, regarding both sludge filterability enhancement and SMP removal, when added at the concentration of 10 mg/L. Further comparison with the anionic polyelectrolyte LT-25 Magnafloc reinforced the allegation that cationic polyelectrolytes are preferable for control of membrane fouling, mainly due to charge neutralization mechanism.

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“…The results indicate that phosphate adsorption onto iron-based adsorbents is a promising technology resulting in nearly zero residual phosphate concentrations. Melidis et al (2016) investigated the operation of a submerged hollow fibre membrane bioreactor treating municipal wastewater under different organic loading rates and high mixed liquor suspended solids concentrations. The system achieved complete suspended solids removal, and BOD, COD, TKN and NH 4 + -N mean removal rates of more than 97, 93, 77 and 91 %, respectively.…”

mentioning

confidence: 99%

Sustainable Solutions to Wastewater Management: Maximizing the Impact of Territorial Co-operation

2016

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Biofouling Aspects and Critical Flux Evaluation in an Intermittently Aerated and Fed Submerged Membrane Bioreactor

Cited by 7 publications

References 40 publications

Innovative Approach on Aerobic Activated Sludge Process towards more Sustainable Wastewater Treatment

Innovative Approach on Aerobic Activated Sludge Process towards more Sustainable Wastewater Treatment

Wastewater Treatment in Membrane Bioreactors: The Use of Polyelectrolytes to Control Membrane Fouling

Sustainable Solutions to Wastewater Management: Maximizing the Impact of Territorial Co-operation

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