Experimental comparison between MBBR and activated sludge system for the treatment of municipal wastewater

Andreottola, Gianni; Foladori, P.; Ragazzi, Marco; Tatàno, Fabio

doi:10.2166/wst.2000.0469

Cited by 100 publications

(55 citation statements)

References 8 publications

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“…MBBR technology offers a number of advantages over conventional technologies for treating waste, including a high effluent quality, no bulking problems, and lower cost. Other advantages of fixed biofilm growth include the decoupling of biomass retention from hydraulic retention time leading to longer sludge ages and low waste sludge volumes (5,37).…”

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confidence: 99%

Microbial Community Composition and Dynamics of Moving Bed Biofilm Reactor Systems Treating Municipal Sewage

Biswas

Turner

2012

Appl Environ Microbiol

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Moving bed biofilm reactor (MBBR) systems are increasingly used for municipal and industrial wastewater treatment, yet in contrast to activated sludge (AS) systems, little is known about their constituent microbial communities. This study investigated the community composition of two municipal MBBR wastewater treatment plants (WWTPs) in Wellington, New Zealand. Monthly samples comprising biofilm and suspended biomass were collected over a 12-month period. Bacterial and archaeal community composition was determined using a full-cycle community approach, including analysis of 16S rRNA gene libraries, fluorescence in situ hybridization (FISH) and automated ribosomal intergenic spacer analysis (ARISA). Differences in microbial community structure and abundance were observed between the two WWTPs and between biofilm and suspended biomass. Biofilms from both plants were dominated by Clostridia and sulfate-reducing members of the Deltaproteobacteria (SRBs). FISH analyses indicated morphological differences in the Deltaproteobacteria detected at the two plants and also revealed distinctive clustering between SRBs and members of the Methanosarcinales, which were the only Archaea detected and were present in low abundance (<5%). Biovolume estimates of the SRBs were higher in biofilm samples from one of the WWTPs which receives both domestic and industrial waste and is influenced by seawater infiltration. The suspended communities from both plants were diverse and dominated by aerobic members of the Gammaproteobacteria and Betaproteobacteria. This study represents the first detailed analysis of microbial communities in full-scale MBBR systems and indicates that this process selects for distinctive biofilm and planktonic communities, both of which differ from those found in conventional AS systems.T he moving bed biofilm reactor (MBBR) system was developed in the late 1980s for the treatment of domestic and industrial wastewaters. These systems are now operating in more than 22 countries (including New Zealand) and range from large-to small-scale wastewater treatment plants (WWTPs) (35). The MBBR process combines features of both fixed-growth and activated sludge (AS) systems in that the microbial community is largely retained within the reactor as a biofilm on suspended carriers, with a smaller planktonic fraction being present in suspension as free-floating cells or small flocs. MBBR technology offers a number of advantages over conventional technologies for treating waste, including a high effluent quality, no bulking problems, and lower cost. Other advantages of fixed biofilm growth include the decoupling of biomass retention from hydraulic retention time leading to longer sludge ages and low waste sludge volumes (5, 37).Studies on the microbial community composition of conventional activated sludge systems indicate that the community is typically dominated by aerobic or facultatively anaerobic heterotrophic bacteria belonging to the Betaproteobacteria (41). It is unclear whether similar communities are found in MBBR pr...

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Microbial Community Composition and Dynamics of Moving Bed Biofilm Reactor Systems Treating Municipal Sewage

Biswas

Turner

2012

Appl Environ Microbiol

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“…Statistical analysis confirmed the statistically significant differences between results for the MBBR and Mammoth reactors, with exception of changes in theconcentration of NO 2 -ions. Many authors have confirmed the effectiveness of the reduction of organic pollutants in MBBR reactors [14,17,18]there are no articles devoted to acomparison of the type of aeration in the wastewater treatment efficiency for MBBR reactors, which differ in the types of aerators. The nutrients level analyses also showed statistically significant differences in changesof their concentrations PO 4 3-(11 -80%) (Fig.…”

Section: Discussionmentioning

confidence: 99%

Model Studies on the Effectiveness of MBBR Reactors for the Restoration of Small Water Reservoirs

et al. 2018

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Abstract. The authors present the Moving Bed Biofilm Reactor (MBBR)model with a quasi-continuous flow for small water reservoir restoration, characterized by high concentrations of organic pollutants. To determine the efficiency of wastewater treatment the laboratory analysis of physic-chemical parameters were conducted for the model on a semi-technical scale of 1:3. Wastewater treatment process was carried out in 24 h for 1 m3 for raw sewage. The startup period was 2 weeks for all biofilters (biological beds). Approximately 50% reduction in COD and BOD 5 was obtained on average for the studied bioreactors. Significant improvements were achieved in theclarity of the treated wastewater, with the reduction of suspension by 60%. The oxygen profile has improved significantly in 7 to 9 hours of the process, and a diametric reduction in the oxidative reduction potential was recorded. A preliminary model of biological treatment effectiveness was determined based on the conducted studies. In final stages,the operation mode was set in real conditions of polluted water reservoirs.

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“…So, excellent NH 4 -N conversion was obtained at overall loads up to 0.3132 g NH 4 -N m −2 day ). Andreottola et al, [16] observed an average nitrification rate as 1.84 g NO 3 -N kg VSS −1 h −1 [17] . Three factors, the load of organic matter, the ammonium concentration and the oxygen Organic load controls nitrification and should be as low as possible.…”

Section: −1mentioning

confidence: 98%

“…There are presently more than 400 large-scale wastewater treatment plants based on this process in operation in 22 different countries all over the world [8] . During the past decade it has been successfully used for the treatment of many industrial effluents including pulp and paper industry waste [9] , poultry processing wastewater [10] , cheese factory wastes [11] , refinery and slaughter house waste [12] , phenolic wastewater [13] , dairy wastewater [14] and municipal wastewater [15][16][17][18][19][20][21][22] . Moreover, sequencing batch operation of MBBR has been attempted for biological phosphorus removal [4,23] , whereas documents and practical experiences with biological nitrogen and phosphorus removal in MBBR process with continuously operation aren't available in Iran and other countries.…”

Section: Introductionmentioning

confidence: 99%

Application of Moving Bed Biofilm Process for Biological Organics and Nutrients from Municipal Wastewater

Kermani¹,

Bina²,

Movahedian³

et al. 2008

American J. of Environmental Sciences

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Abstract:In this study, experiments have been conducted to evaluate the organics and nutrients removal from synthetic wastewater by a laboratory scale moving bed biofilm process. For nutrients removal, moving bed biofilm process has been applied in series with anaerobic, anoxic and aerobic units in four separate reactors. Moving bed biofilm reactors were operated continuously at different loading rates of nitrogen and Phosphorus. During optimum conditions, close to complete nitrification with average ammonium removal efficiency of 99.72% occurred in the aerobic reactor. In the aerobic reactor, the average specific nitrification rate was 1.8 g NO x -N kg VSS. The results of the average effluent soluble COD concentration from each reactor showed that denitrification process in the second anoxic reactor consumed most of the biodegradable organic matter. As seen from the results, denitrification rate has increased with increasing NO x -N loading in the second anoxic reactor. The aerobic phosphate removal rate showed a good correlation to the anaerobic phosphate release rate. Moreover, phosphate removal rate showed a strong correlation to the phosphate loading rate in the aerobic reactor. In optimum conditions, the average SCOD, total nitrogen and phosphorus removal efficiencies were 96.9, 84.6 and 95.8%, respectively. This study showed that the moving bed biofilm process could be used as an ideal and efficient option for the total nutrient removal from municipal wastewater.

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Experimental comparison between MBBR and activated sludge system for the treatment of municipal wastewater

Cited by 100 publications

References 8 publications

Microbial Community Composition and Dynamics of Moving Bed Biofilm Reactor Systems Treating Municipal Sewage

Microbial Community Composition and Dynamics of Moving Bed Biofilm Reactor Systems Treating Municipal Sewage

Model Studies on the Effectiveness of MBBR Reactors for the Restoration of Small Water Reservoirs

Application of Moving Bed Biofilm Process for Biological Organics and Nutrients from Municipal Wastewater

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