Evaluation of a MBR pilot treating industrial wastewater with a high COD/N ratio

Babatsouli, Panagiota; Palogos, Ioannis; Michalodimitraki, Eleni; Costa, Costas; Kalogerakis, Nicolas

doi:10.1002/jctb.4364

Cited by 21 publications

(16 citation statements)

References 39 publications

(42 reference statements)

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“…At the HRT of 12 h, the MBR with longest SRT of 30 d achieved better removal efficiencies of COD, NH 4 -N and PO 4 -P, while exhibited less membrane fouling with the slowest transmembrane pressure (TMP) increment. Babatsouli et al (2014) demonstrated an MBR pilot plant with a short SRT of 20 d for industrial wastewater treatment. At shorter HRT of 19 h, not only lower denitrification and phosphate removal but also higher fouling rate were observed.…”

Section: Introductionmentioning

confidence: 99%

Effects of hydraulic retention time and bioflocculant addition on membrane fouling in a sponge-submerged membrane bioreactor

Deng

Guo

Ngo

et al. 2016

Bioresource Technology

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The characteristics of activated sludge and membrane fouling were evaluated in a sponge-submerged membrane bioreactor (SSMBR) at different hydraulic retention times (HRTs) (6.67, 5.33 and 4.00h). At shorter HRT, more obvious membrane fouling was caused by exacerbated cake layer formation and aggravated pore blocking. Activated sludge possessed more extracellular polymeric substances (EPS) due to excessive growth of biomass and lower protein to polysaccharide ratio in soluble microbial products (SMP). The cake layer resistance was aggravated by increased sludge viscosity together with the accumulated EPS and biopolymer clusters (BPC) on membrane surface. However, SMP showed marginal effect on membrane fouling when SSMBRs were operated at all HRTs. The SSMBR with Gemfloc® addition at the optimum HRT of 6.67h demonstrated superior sludge characteristics such as larger floc size, less SMP in mixed liquor with higher protein/polysaccharide ratio, less SMP and BPC in cake layer, thereby further preventing membrane fouling.

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Section: Introductionmentioning

confidence: 99%

Effects of hydraulic retention time and bioflocculant addition on membrane fouling in a sponge-submerged membrane bioreactor

Deng

Guo

Ngo

et al. 2016

Bioresource Technology

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“…Thus, maintaining relatively shorter SRT by discharging a large amount of excess sludge can have better advantage for phosphorus removal compared to longer SRT operation [23]. The removal of TP in the MBR process could be attributed to polyphosphate accumulating organisms (PAOs), whose growth is favored in MBRs [25]. During EMBR process, polyphosphate decomposes and, thus orthophosphate (PO 4 ) is released by the aid of PAOs under anaerobic conditions.…”

Section: Removal Of Nutrients (Tp and Tn)mentioning

confidence: 99%

Incorporating Submerged MBR in Conventional Activated Sludge Process for Municipal Wastewater Treatment: A Feasibility and Performance Assessment

Gurung¹,

Ncibi²,

Fontmorin³

et al. 2016

J Membra Sci Technol

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A pilot-scale submerged membrane bioreactor (MBR) was incorporated in a conventional activated sludge (CAS) process for more than 100 days in order to assess the feasibility and performance on the municipal wastewater treatment. After a stabilization period of 50 days, the MBR unit was operated under various temperatures (21 ± 4°C), mixed liquor suspended solids (MLSS) concentrations (14000 ± 1800 mg L -1 ), and different aeration intensities (3 to 6 m 3 h -1 ). No significant deterioration in membrane flux was observed while operating with high biomass concentration. From the results, the removal of total suspended solids (TSS), chemical oxygen demand (COD), total phosphorus (TP) were enhanced using MBR. However, due to some limiting operational conditions, the total nitrogen (TN) removal was less efficient in MBR than in CAS. The MBR unit was 100% effective in removing E. coli and enterococcus, as well as noroviruses and adenovirus, making it more efficient than CAS. Also, the removal of most of the trace organic compounds (TrOCs) including personal care products, pharmaceuticals, steroid hormones and perfluorinated compounds were enhanced after the incorporation of MBR to CAS, as well as for many heavy metals in MBR.

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“…A common method for improving the quality of sewage treatment plants is to use a new secondary treatment process for wastewater treatment to obtain better water quality [4]. Membrane Bioreactor (MBR) [5], Fluidized Bed Biological Reactor (FBBR) [6], Moving Bed Biofilm Reactor (MBBR) [7] and other technologies are used to replace the traditional process, so as to efficiently remove organic matter and simultaneously remove nitrogen and phosphorus.…”

Section: Introductionmentioning

confidence: 99%

Organic and nutrient removal during start-up period for domestic sewage treatment by an A/O mixed carrier system

Liao

Pan

2020

E3S Web Conf.

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This study combined biofilm method and A/O process reasonably to form the biological treatment system. This experiment focused on the performance of the system for domestic sewage according to the determination of CODCr, ammonia nitrogen, total nitrogen, and total phosphorus. The A/O-mixed carrier system had a good removal effect on organic pollutants for simulated domestic sewage. At the start-up period, the average removal rates of CODCr, ammonia nitrogen and total nitrogen were 92%, 90% and 55%, respectively. But the removal effect of total phosphorus was not ideal.

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Evaluation of a MBR pilot treating industrial wastewater with a high COD/N ratio

Cited by 21 publications

References 39 publications

Effects of hydraulic retention time and bioflocculant addition on membrane fouling in a sponge-submerged membrane bioreactor

Effects of hydraulic retention time and bioflocculant addition on membrane fouling in a sponge-submerged membrane bioreactor

Incorporating Submerged MBR in Conventional Activated Sludge Process for Municipal Wastewater Treatment: A Feasibility and Performance Assessment

Organic and nutrient removal during start-up period for domestic sewage treatment by an A/O mixed carrier system

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