Fouling Control by Reduction of Submicron Particles in a BF‐MBR with an Integrated Flocculation Zone in the Membrane Reactor

Ivanovic, Igor; Leiknes, TorOve; Ødegaard, Hallvard

doi:10.1080/01496390801974704

Cited by 31 publications

(13 citation statements)

References 10 publications

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“…The CST parameter indicates the dewaterability of the sludge floccules [24,117] and has been used as a fouling indicator in MBR systems [118,119]. CST is positively linked to the concentration of biopolymers in ML and has a negative correlation with the permeability [120][121][122].…”

Section: Discussionmentioning

confidence: 99%

Strategy for Flux Enhancement in Biofilm Ceramic Membrane Bioreactor Applying Prepolymerized and Non-Prepolymerized Inorganic Coagulants

Kulesha

Maletskyi

Kvaal

et al. 2019

Water

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Considering new legislative and economic restrictions caused by the water crisis, this work focuses on a more efficient wastewater treatment process, which combines biological treatment in a moving bed biofilm system with a membrane bioreactor (BF-MBR) and coagulation, particularly addressing fouling alleviation in the separation stage. The study justifies the positive impact of coagulant dosing in BF-MBR regarding membrane flux and fouling rate. Statistical techniques connect the results of coagulation and membrane separation experiments with properties of mixed liquor, obtained after biotreatment in the representative pilot plant and characteristics of prepolymerized and non-prepolymerized inorganic coagulants. Research results substantiate the need for a pH-controlled coagulation of mixed liquor in BF-MBR depending on coagulant type, which influences charge, hydrophobicity and size of flocs and organic content of the system. It is suggested, that the adsorption/charge neutralization mechanism dominates in flux enhancement in BF-MBR, giving the best results in the case of prepolymerized aluminium coagulants. Together with high quality of permeate, the application of prepolymerized aluminium chloride of medium basicity entails a tenfold increase in filtration time of the membrane separation cycle and increases net membrane flux by 30–56%. The results of the study are practically significant for the development of an automated control system for BF-MBR, optimizing treatment rates together with membrane separation efficiency.

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Section: Discussionmentioning

confidence: 99%

Strategy for Flux Enhancement in Biofilm Ceramic Membrane Bioreactor Applying Prepolymerized and Non-Prepolymerized Inorganic Coagulants

Kulesha

Maletskyi

Kvaal

et al. 2019

Water

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“…continuous oxygen and energy supply and retain substances in the concentrate instead of attaching on the membrane [8]. Ivanovic et al [9] and Wu and Huang [10] demonstrated the positive role of coagulation process on fouling control in MBR. As far as the concentration effect is concerned, despite the coagulation process alone might not be effective in retaining dissolved organic matter, membrane and the cake layer induced by flocs formed on the membrane surface would have positive function in concentrating soluble organic matter [11].…”

Section: Introductionmentioning

confidence: 97%

Application of hybrid coagulation microfiltration with air backflushing to direct sewage concentration for organic matter recovery

Jin

Gong

Wang

2015

Journal of Hazardous Materials

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“…However, as for all MBR systems, a sustainable operation of the process is dependent on understanding membrane fouling and incorporating strategies and techniques for fouling control and fouling mitigation. Previous studies have shown that membrane fouling in BF-MBR systems appears to be particularly sensitive to the colloidal fraction in the concentrate in the membrane reactor (Ivanovic et al, 2006, 2008, 2007. One of the goals of the alternative process configurations proposed was as to develop a process concept for suspended solids control, energy optimization method, and sludge waste management.…”

Section: Impact Of Alternative Process Configurationsmentioning

confidence: 98%

“…An additional benefit of the BF-MBR concept is the energy demand for aerobic conditions in the biological reactor compared to the AS-MBR where constraints on oxygen mass transfer rates are a challenge due high MLSS values commonly applied in the process. Studies have been conducted to investigate the potentials of coupling biofilm reactors with membrane separation as a treatment concept for municipal wastewater , Ivanovic et al, 2006, 2008, Leiknes et al, 2007, Phattaranawik et al, 2008. Different biofilm reactor combinations and concepts have been tested to investigate the effect of the biodegradation stage on the performance of the membrane reactor.…”

Section: Weftec 2009mentioning

confidence: 99%

“…The impact of the membrane reactor design was investigated by studying three membrane reactor designs: 1) a completely mixed reactor (CM-MR), 2) membrane reactor with integrated sludge pocket (SP-MR), and 3) a membrane reactor with a modified sludge pocket (MSP-MR). The alternative designs allow integrating flocculation zones in the reactor thereby improving particle separation and reducing fouling of the membranes (Ivanovic et al, 2008). The reactor designs studied are illustrated in Figure 4.…”

Section: Membrane Reactor Designmentioning

confidence: 99%

See 1 more Smart Citation

Prospects and Potentials of Biofilm-MBRs for Municipal Wastewater Treatment

Leiknes¹,

Phataranawik²,

Ivanovic³

2009

proc water environ fed

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Coupling biofilm reactors with membrane processes as biofilm membrane bioreactors (BF-MBR) is an interesting development as an alternative technology to activated sludge membrane bioreactors (AS-MBR). Biofilm technology for wastewater treatment can provide substantially lower suspended solid environments for membrane filtration compared to activated sludge processes. Potential benefits are; reduced energy consumption for aeration systems (lower viscosity), less membrane clogging problems, lower fouling potentials, ease of membrane cleaning, and new membrane module designs (i.e. higher membrane packing densities). This study was aimed to propose and investigate alternative membrane reactor designs and process configurations of the BF-MBR process. Alternative and novel biofilm reactor designs have been investigated, for example; a double-deck aerated moving bed biofilm reactor, two-stage aerobicanaerobic biofilm reactor. The performance and design of the biofilm reactors was aimed to determine TSS control, effluent quality, and enhanced membrane filterability. The biofilm effluent on average had low TSS (typically <50 mg/L), low turbidities and FCOD. Alternative membrane modules and membrane filtration unit designs have been investigated. These include flat sheet systems, tubular and capillary membranes supplied from various manufacturers.

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Fouling Control by Reduction of Submicron Particles in a BF‐MBR with an Integrated Flocculation Zone in the Membrane Reactor

Cited by 31 publications

References 10 publications

Strategy for Flux Enhancement in Biofilm Ceramic Membrane Bioreactor Applying Prepolymerized and Non-Prepolymerized Inorganic Coagulants

Strategy for Flux Enhancement in Biofilm Ceramic Membrane Bioreactor Applying Prepolymerized and Non-Prepolymerized Inorganic Coagulants

Application of hybrid coagulation microfiltration with air backflushing to direct sewage concentration for organic matter recovery

Prospects and Potentials of Biofilm-MBRs for Municipal Wastewater Treatment

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